Method of identifying elastic afterworking cause, method of displaying influence of elastic afterworking, method of identifying location of elastic afterworking cause, method of identifying position of elastic afterworking preventer, devices for their implementation and programmes

FIELD: process engineering.

SUBSTANCE: invention relates to metal forming and may be used for afterworking data processing Metal forming conditions are numerically analysed to obtain forming data for sections of part being formed. Magnitudes of physical property and quantitative magnitudes of physical property of aforesaid sections are processed. Elastic afterworking magnitude is calculated proceeding from aforesaid processing results. Data are processed once more and elastic afterworking is calculated for varying sections of formed part to identify region wherein elastic afterworking makes minimum, or difference incorporating elastic afterworking without aforesaid processing makes maximum. For this, proposed device is used incorporating forming analyser, elastic afterworking analyser, processor to process results, carrier of records read off by computer incorporating programme that allows identifying location of elastic afterworking origination cause.

EFFECT: reduced elastic afterworking.

77 cl, 75 dwg, 9 ex, 3 tbl

 

The technical field to which the invention relates.

The present invention relates to a method of identifying the causes of elastic return, resulting in products being formed by extrusion, molding using a press car element, etc. of the steel sheet, steel rolled and other steel materials and aluminium, magnesium, titanium or other metals, and to a method of displaying the degree of influence, the method of identifying the location of the causes and method of identifying the position of a measure against him, to devices for their implementation and their programs.

The level of technology

Doors, bumpers and many other automotive parts, parts for home appliances, building materials, etc. produced by molding by pressing a steel sheet. In recent years there has been demands to reduce the weight of these parts. To meet these requirements using high-strength steel material to reduce the thickness of steel materials, etc.

However, at higher strength steel sheet was necessary to impose more stringent control to ensure the correct form of the product obtained by the molding pressure. One of the important elements in this control represents a deformation, when provideproperty is part of the steel sheet elastically restores its shape under the action of residual stresses arising in the steel sheet during the molding pressure, i.e. under the action of elastic return.

In particular, in recent years to reduce the amount of work and costs associated with the development of automobiles, etc., there was a trend to start the phase of the mechanical design of the study method of molding parts simultaneously with the stage of conceptual design. Changes in the conceptual design phase conceptual design resulted in changes being formed parts on the stage of mechanical design, so that the work and costs at the stage of mechanical design, aimed at studying methods of forming molded parts, become a big issue in the development process or constitute a large part of the development costs of automobiles, etc.

1 schematically shows in sectional view forming element, which presents the usual measure against elastic return. In position (a) shows the shape in cross section formed product, at position (b) shows the elastic return that occur in the molded product after cold pressing of the steel sheet using the same shape as the molded product shown in position (a), and Fig.(C) shows a view in cross section of the tool is adjusted in the other return. Thus, to obtain a molded product shown in the position (a)measure is used, consisting in the application of the tool in which "accounted for" spring back, as shown at position (C), to obtain the desired molded product.

As a method of molding tool, which thus takes into account the elastic return, apply the method using the finite element method for the analysis of residual stress of the steel sheet in the bottom dead center position during the pressing tools and the tools of numerical analysis form deformation (excessive bending), resulting from residual stress in the opposite direction to the residual voltage, for generating tool, which simply takes into account the elastic return ("Publication of Japanese patent (A) No. 2003-33828" and "Mitsubishi Motors Technical Review (2006, No. 18, str-131)").

However, the development of tools that take full account of elastic return, using numerical analysis is a nonlinear problem and is extremely complex, so that in the proposed method, form tool, just given the elastic return using the finite element method. Therefore, using the methods of numerical analysis it is difficult to analyze the necessary measure, when the permissible elastic return the ATA cannot be achieved using such a tool, so up to this point in time was not offered a solution.

Thus, the type of measures required to obtain the necessary molded product, when the allowable value of the elastic return cannot be satisfied using the tool, simply taking into account the elastic return, depends on the experience of the engineer. In the final analysis must be tested by the method of trial and error using the instrument, obtained using the method of molding and actually used sheet steel.

In addition, there was proposed a method of reducing the elastic return by making modifications to reduce the residual voltage is not in the form of a tool, and in the form of a steel material or the formed product.

Figure 2 presents a perspective view illustrating a conventional method of finding the location, which causes a deformation in the elastic return. In position (a) shows the shape of the molded product, at position (b) presents the case of the cut-out part 1 of the product in position (C) shows the case of forming the holes 2 in the product and in the position (d) shows the case of forming slits 3 in the part of the product. Such measures are discussed, after their application to observe the behaviour of the elastic return and examine measures to reduce the elastic return.

However, while m is ture, used at the scene of an elastic return, reduce the residual voltage, leading to elastic return, the resulting cut pieces, forming holes, etc. to decrease the stiffness of the element, and therefore there arises the problem of elastic return even under the action of a slight residual voltage. The main reason, therefore, will not be found. In addition, measures of this kind in practice require practical tests using test equipment and steel sheet, and therefore there arises a problem of increasing the amount of work and costs at the stage of mechanical engineering.

The invention

Taking into account the issues described above in the present invention the subject invention is a developing method using numerical analysis to identify locations that become the cause of an elastic return being formed by using a press product, and the numerical analysis of the properties identified locations for cost-effective, and reduce the time required to study the method of forming molded element.

In addition, an object of the present invention is that by using numerical analysis provide maintenance being formed in the product product strength and values of the elastic return within the allowable value or less.

In addition, an object of the present invention is to use numerical analysis to develop a measure of the decrease of the elastic return for a location, which causes the elastic return of the product being formed by using a press.

To achieve the above objects the present invention provides a method of identifying the causes of the elastic return with the analysis stage molding using a press, which consists in the numerical analysis of the conditions of the molding when the molding using a press to get the data forming portion being formed by using a press, the step of processing comprising processing at least some of the data values of the physical properties and the quantitative values of physical properties for some of the areas mentioned part being formed by pressing, among the data forming the afore-mentioned part being formed by using a press, and the step of calculating values of elastic return, consisting in the calculated values of the elastic return on the basis of the results mentioned processing.

Mentioned the importance of the physical properties and the quantitative value of the physical property can be a sheet thickness, modulus of elasticity, modulus of plasticity, component values and voltage values of the component deformation. In sposobnost to repeat the above processing step and the step of calculating values of the elastic return when the change mentioned parts for identification field, values of physical properties and quantities of physical properties, where the mentioned value of the elastic return becomes the smallest or where the difference with the value of the elastic return when performing analysis of elastic return without performing the aforementioned processing becomes the greatest.

Furthermore, the method can have the step of repeating the above-mentioned processing step and the step of calculating values of the elastic return when changing at least one of the mentioned values of the physical properties and the quantitative values of physical properties, and/or the processing to identify a region, the values of physical properties, and quantitative values of physical properties, where the mentioned value of the elastic return becomes the smallest or where the difference with the value of the elastic return when performing analysis of elastic return without performing the aforementioned processing becomes the greatest.

In addition, some areas can be represented as a set of areas that can be processed simultaneously. The above-mentioned processing step may be a step on which the part is divided into areas where the mentioned value of the elastic return becomes the smallest, and perform processing for these divided regions, at least one of the above-mentioned values of physical the definition of the properties and the quantitative values of physical properties, until the size of the split regions becomes equal to the preset value or less. In addition, this area may represent one or more elements or blocks calculation module. In addition, this area may represent one or more integration points.

In addition, the present invention provides a device for identifying the causes of the elastic return with the analyzer molding using a press for numerical analysis of the conditions of the molding when the molding using a press to get the data forming portion being formed by using a press, the analyzer elastic return for the numerical analysis of such data forming, to calculate the values of elastic return, and a processor for processing at least some of the data values of the physical properties and the quantitative values of the physical properties of parts of the areas mentioned part being formed by the press, among the data forming said part being formed with a press, and provide calculation mentioned analyzer elastic return values of elastic return on the basis of the results mentioned processing.

Mentioned the importance of the physical properties and the quantitative value of the physical property can be a thickness of the sheet, the module panel the guests the modulus, the value of the component voltage and the value of the component deformation. The mentioned processor may repeatedly calculate the results of the above-mentioned processing and the values of the elastic return when you change part of the regions, to identify a region, the values of physical properties and quantities of physical properties, where the mentioned value of the elastic return becomes the smallest or where the difference with the value of elastic return, when performing analysis of elastic return, without performing the aforementioned processing becomes the greatest.

In addition, in the device to identify the causes of the elastic return of the mentioned processor may repeatedly calculate the results of the above-mentioned processing and the values of the elastic return when you change the mentioned values of the physical properties and the quantitative values of physical properties, and/or the processing to identify a region, the values of physical properties and quantities of physical properties, where the mentioned value of the elastic return becomes the smallest or where the difference with the value of the elastic return when performing analysis of elastic return without performing the aforementioned processing becomes the greatest.

In addition, this area may be a lot about the t, and these areas are treated at the same time. In addition, in the device to identify the causes of the elastic return of the mentioned processor may share some of the areas where the mentioned value of the elastic return becomes the smallest, and process mentioned split pane for at least one of the mentioned values of the physical properties and the quantitative values of the physical properties, until the size of the split regions becomes equal to the preset value or less.

In addition, for the above-mentioned objects of the invention the present invention provides a method of identifying the causes of elastic return, characterized in that it has the analysis stage molding using a press, comprising in the numerical analysis of the conditions of the molding when the molding using a press to get the data forming portion being formed by the press, the stage of processing consisting in the calculation of curvature and/or angle for the said part forming with the press in data forming said part being formed by the press, separation of the product to be cast on the field on the basis of the curvature and/or angle and processing at least one of the values of the physical properties and the quantitative values of the physical properties in terms of areas section is the R regions, certain processing on the basis of such data the molding, and the step of calculating values of elastic return, consisting in the calculation of the values of the elastic return on the basis of the results mentioned processing.

At the stage of processing may be processing at least one of the mentioned values of the physical properties/quantitative values of physical properties, changing at least one of the integration points of the divided region where the above-mentioned curvature and/or angle is relatively large. In addition, the mentioned value of the physical properties and the quantitative value of the physical property can be a value of the thickness, modulus of elasticity, modulus of plasticity, the component voltage and component values of strain.

The method of identifying the causes of the elastic return may have the step of repeating the above-mentioned processing step and the step of calculating values of the elastic return when the change mentioned part of the areas, therefore, to identify the region, the importance of physical properties and the quantitative value of the physical property where the above-mentioned value of the elastic return becomes the smallest.

Furthermore, the method can have the step of repeating the above-mentioned processing step and the step of calculating values of the elastic return when the application referred to, at least one of the values of the physical properties and the quantitative values of physical properties, and/or the processing to identify a region, the values of physical properties and quantities of physical properties, where the mentioned value of the elastic return becomes the smallest.

In addition, the present invention is directed to a device identification of the causes of elastic return, characterized in that it comprises the analyzer molding using a press that performs numerical analysis of the conditions of the molding when the molding using a press, to obtain data forming portion being formed by using a press, the processor calculates the curvature and/or angle for the mentioned part being formed by using a press, in data forming said part being formed by the press, separation of the product to be cast on the field on the basis of the curvature and/or angle and processing at least one of the values of the physical properties and quantitative values of the physical properties that change in part of the areas among the divided areas identified for treatment on the basis of such data forming, and the analyzer elastic return which computes the value of the elastic return on the basis of the results mentioned processing.

The value of the physical properties and the number of the local value of the physical properties mentioned in the divided region, in which said curvature and/or angle is relatively large, can be represented as the mentioned value of the physical properties and the quantitative value of the physical property of at least one point of integration is divided region where the above-mentioned curvature and/or angle is relatively large. In addition, the mentioned value of the physical properties and the quantitative value of the physical property can be a value of the thickness, modulus of elasticity, modulus of plasticity, component values and voltage values of the component deformation.

In addition, in the device to identify the causes of the elastic return of the mentioned processor may repeatedly calculate the results of the above-mentioned processing and the values of the elastic return when the change mentioned part of the regions in such a way that it identifies the region, the importance of physical properties and the quantitative value of the physical property where the above-mentioned value of the elastic return becomes the smallest. In addition, he may repeatedly calculate the results of the above-mentioned processing and the value of elastic return, changing at least one of the mentioned values of physical properties and quantities of physical properties, and/or the processing thus to identify the area of the, the value of the physical properties and the quantitative value of the physical property where the above-mentioned value of the elastic return becomes the smallest.

In addition, to work with the objects of the invention in the present invention, a method (program) display the degree of effect of the elastic return when displaying computer degree the effect of the elastic return with the analysis stage molding using a press, which perform numerical analysis of the conditions of the molding when the molding using a press to get the data forming portion being formed by using a press, the step (procedure) processing comprising processing at least some of the data values of the physical properties and the quantitative values of the physical properties of each region, separating the said part being formed by using a press, in data molding said part being formed by using a press, the step (procedure) calculate the values of elastic return, consisting in the calculation of the values of the elastic return on the basis of the results mentioned processing, and the step (procedure) display, single display mentioned calculated values of the elastic return for each of the mentioned areas.

Step (procedure) processing allows to process at least some of the data values of the physical properties and the quantitative values of the physical properties part of the integration points of each area, separating the said part being formed by the press in forming data of said part being formed by using a press. In addition, the mentioned value of the physical properties and the quantitative value of the physical property can be a value of the thickness, modulus of elasticity, modulus of plasticity, the values of the stress components and component deformation.

In the above-mentioned step (procedure) of the display may display a contour map of the values of the elastic return for each area and can display the value of the calculated values of elastic return, divided by the area of each region. In addition, the step (procedure) of the display may display the value of the calculated values of the elastic return divided by one of the representative length of the representative width, representative, height representative of the thickness and tensile strength mentioned part being formed by using a press. In addition, the step (procedure) of the display can display the value mentioned calculated values of elastic return, divided by the speed of the stamp or on the strength retention of the workpiece for each of the above mentioned fields.

In addition, the present invention provides a device for display of a degree of effect of the elastic return different t is m, the analyzer molding using a press that performs numerical analysis of the conditions of the molding when the molding using a press to get the data forming portion being formed by using a press, the analyzer elastic return, perform the numerical analysis of such data forming to calculate the values of elastic return, the processor that handles at some of the data values of the physical properties and the quantitative values of the physical properties of each region, separating the said part being formed by using a press, when forming the data mentioned part being formed by the press, and ensure the implementation of the calculation mentioned analyzer elastic return values of elastic return, based on the results of the above-mentioned processing, and a display module that displays the aforementioned calculated value of the elastic return for each of the mentioned areas.

The processor can handle at least some of the data of physical properties and quantities of physical properties part of the integration points of each area, separating the said part being formed by using a press, when forming the data mentioned part being formed by using a press, and the above-mentioned values of the physical properties and the quantitative values of the physical properties can be represented with the fight is the thickness of the sheet, modulus of elasticity, modulus of plasticity, the component values of the voltage and component deformation.

The display module may display a contour diagram of the values of the elastic return for each area and additionally can display a contour diagram of the values mentioned calculated values of elastic return, divided by the area of each of the mentioned areas, in the above-mentioned display module, for each of the mentioned areas. The display module can display the value mentioned calculated values of the elastic return divided by one of the representative length of the representative width, representative, height representative of the thickness and tensile strength of the mentioned parts are molded using a press, in the above-mentioned display module, for each of the mentioned areas. In addition, the display module can display the value mentioned calculated values of elastic return, divided by the speed of the stamp or force holding the workpiece in the above-mentioned display module, for each of the mentioned areas.

The program in accordance with the present invention may be a program to display the causes of the elastic return, which uses, in addition to the above-mentioned program, the program analysis molding using a press, vypolnyaya the numerical analysis of the conditions of the molding when the molding using a press, to calculate the data forming portion being formed by using a press, the program analysis of elastic return, perform the numerical analysis of such data forming to calculate the values of elastic return, and the program further processing, showing a contour diagram of the above-mentioned values of the elastic return and which can input and output data in these programs, ensuring the implementation of computer procedures for obtaining such data forming of the above-mentioned program analysis molding using a press, a processing procedure for processing at least some of the data values of the physical properties and the quantitative values of the physical properties of each region, separating the said part being formed with a press the mentioned data forming procedure to output the results mentioned processing in the above-mentioned program analysis of elastic return, and procedures display circuit which displays the said program further processing using contour diagrams mentioned values of elastic return, calculated by the mentioned program analysis of elastic return for each area. The existing program analysis of elastic return calculates the values of the elastic return on the basis of data processing, the output from the program in accordance with anastasimatarion.

In addition, for the above-mentioned objects of the invention a method (program below, the parentheses indicate the correspondence to the invention program) identify the location of the causes of the elastic return in accordance with the present invention has a step (procedure) analysis molding using a press, which consists in performing a numerical analysis of the conditions of the molding when the molding using a press to get the data forming portion being formed by using a press, the step (procedure) of calculating the first value of elastic return, consisting in calculating the data values of the physical properties and the quantitative values of physical properties for many areas after the elastic return, based on the data molding said part being formed by using a press, the step (procedure) processing comprising processing at least some of the data values of the physical properties and the quantitative values of the physical properties of the field, when there is a region where at least one of the mentioned values of the physical properties and the quantitative values of the physical property is greater than the preset value, and step (procedure) of calculating a second value of elastic return, consisting in calculating the data values of the physical properties and the quantitative values of physical properties for each of the many areas after the elastic return on the basis of the above-mentioned processing.

In addition, the above-mentioned step (procedure) processing may be processing at least some of the data values of the physical properties and the quantitative values of the physical properties of the field, when there is a region where a difference of at least some of the data values of the physical properties and the quantitative values of the physical properties of the part being formed by the press, before and after the elastic return is greater than the preset value, and mentioned the importance of the physical properties and the quantitative value of the physical property can be a value of the thickness, modulus of elasticity, modulus of plasticity, the value of the component voltage component and the strain.

In addition, the device for identifying the location of the causes of the elastic return in accordance with the present invention provides an analyzer formation by the press that performs numerical analysis of the conditions of the molding when the molding using a press, to obtain data forming portion being formed by using a press, the analyzer elastic return, perform the numerical analysis of such data forming, to calculate the values of elastic return, and a processor that performs processing for processing at least some of the data the values of physical properties and quantities of the physical properties of this region, when at least one of the mentioned values of the physical properties and the quantitative values of the physical property is greater than the preset value, and ensure compliance calculation mentioned analyzer elastic return values of elastic return for each of the many areas after the elastic return, based on the results of the above-mentioned processing.

In addition, the processor can handle at least some of the data values of the physical properties and the quantitative values of the physical properties of the field, when there is a region where a difference of at least some of the data values of the physical properties and the quantitative values of the physical properties of the part being formed by the press, before and after the elastic return is greater than the preset value, and mentioned the importance of the physical properties and the quantitative value of the physical property can be a value of the thickness, modulus of elasticity, modulus of plasticity, the component values of the voltage and component deformation.

The program in accordance with the present invention may be a program to identify the location of the causes of elastic return, which is used, in addition to the above program, the program analysis molding using a press, done the expansion of the numerical analysis of the conditions of molding for molding using a press, to calculate the data forming portion being formed by using a press, and data values of the physical properties and the quantitative values of physical properties for each of the multiple areas, and the program analysis of elastic return, perform the numerical analysis of such data forming the data values of the physical properties and the quantitative values of physical properties for each of the multiple regions to calculate the values of elastic and return data values of the physical properties and the quantitative values of physical properties for each of the many areas after the elastic return and that can input and output data with these programs, ensuring the implementation of computer procedures for obtaining data values of the physical properties and quantitative values of physical properties for each of the many areas after the elastic return of the above-mentioned program analysis of elastic return, the procedure for processing at least some of the data values of the physical properties and the quantitative values of the physical properties of the field, when there is a region where at least one of the mentioned values of the physical properties and the quantitative values of the physical property is greater than the preset value, and the procedure to output the results mentioned processing upomanutoi program analysis of elastic return. The existing program analysis of elastic return recalculates the values of the elastic return on the basis of the data output processing, the output from the program in accordance with the present invention.

In addition, for solving the above problems provides a method (program below in parentheses indicated according to the invention program) identify the location of the causes of the elastic return with the first step (procedure) analysis molding using a press, which consists in performing a numerical analysis of the first forming conditions to calculate the first data forming the second stage (procedure) analysis molding using a press, which consists in performing a numerical analysis of the second molding conditions differing in at least one of the above first forming conditions to calculate the second data formation step (procedure) processing, at least some of the data values of the physical properties and the quantitative values of the physical properties mentioned first data forming region, when there is a region where a difference of at least some of the data values of the physical properties and the quantitative values of the physical properties in the data values of the physical properties and the quantitative values of physical properties for each of the many areas in which manutech first and second data forming more than the preset value, and step (procedure) calculate the values of elastic return, consisting in the calculation of the values of the elastic return on the basis of the results mentioned processing.

Also, the molding conditions can imagine the shape and properties of the steel sheet, the shape of the tool and working conditions of the press. Mentioned the importance of the physical properties and the quantitative value of the physical property can be a value of the thickness, modulus of elasticity, modulus of plasticity, the component voltage and component values of strain.

In addition, the device for identifying the location of the causes of the elastic return in accordance with the present invention provides an analyzer molding using a press that performs numerical analysis of the first molding conditions for the calculation of the first data forming and numerical analysis of the second molding conditions differing in at least one of the first mentioned molding conditions for calculating the second data forming analyzer elastic return, perform the numerical analysis of such data forming to calculate the values of elastic return, and a processor that processes at least one of the values of the physical properties and the quantitative values of the physical properties mentioned first data formula the Oia area, when there is a region where a difference of at least some of the data values of the physical properties and the quantitative values of the physical properties in the data values of the physical properties and the quantitative values of physical properties for each of the many areas mentioned first and second data forming more than the set value, and providing the calculation mentioned analyzer elastic return values of elastic return on the basis of the results mentioned processing.

In addition, the molding conditions can represent a form and properties of the steel sheet, the shape of the tool and working conditions of the press, while the mentioned value of the physical properties and the quantitative value of the physical property can be a value of the thickness, modulus of elasticity, modulus of plasticity, the component voltage and component values of strain.

The program in accordance with the present invention may be a program to identify the location of the causes of elastic return, which is used in addition to the above program, the program analysis molding using a press, calculates data for forming portion being formed by using a press, and the data values of the physical properties and the quantitative values of the physical with the STS for each of the multiple regions and program analysis of elastic return, performing a numerical analysis on this data forming the data values of the physical properties and the quantitative values of physical properties for each of the multiple regions to calculate the values of elastic and return data values of the physical properties and the quantitative values of physical properties for each of the many areas after the elastic return, which represent existing programs, and which can input and output data with these programs, ensuring the implementation of computer procedures for obtaining first data forming of the above-mentioned program analysis molding using a press, procedures for the numerical analysis of the second formation conditions that differ in at least one of the first mentioned formation conditions and receiving a second data forming of the above-mentioned program analysis molding using a press, procedures for processing at least one of the values of physical properties and the quantitative values of the physical properties mentioned first data forming in the field, when there is a region where a difference of at least some of the data values of the physical properties and the quantitative values of the physical properties in the data values of the physical properties and the quantitative values of the physical property for each of the nd many of the areas mentioned first and second data forming more than the preset value and the procedure of conclusion of the aforementioned processing in the above-mentioned program analysis of elastic return. The existing program analysis of elastic return calculates the values of the elastic return on the basis of data processing, the output from the program in accordance with the present invention.

In addition, for the above-mentioned objects of the invention a method of identifying the position of a measure against the elastic return in accordance with the present invention has a step (procedure) analysis molding using a press, which consists in carrying out a numerical analysis of the conditions forming part being formed by using a press to calculate the data forming portion being formed by using a press, the step (procedure) of the data generation, the formation of replacement, which consists in selecting at least part of the areas of the part being formed by using a press, the molded part being formed by using a press, and generating data of forming replacement substituting this form of the selected areas of different shape and/or replacing the stress distribution characterized by the distribution of stress in their chosen field, and the step (procedure) calculate the values of elastic return, consisting in performing numerical analysis of such data replacement for the calculation of elastic return.

It is also possible to repeat the aforementioned step of generating data of forming replacement and the above-mentioned step (procedure) calculate the values of the elastic return by changing the position or quantity mentioned selected areas. The method may further have the step (procedure) of the definition is whether the value of the elastic return the specified value or less.

In addition, it is also possible to replace at least one of the form of one or more of these areas given replaced by the data, by setting the value of the elastic return with the specified value or less and the stress distribution in this selected area, and repeat the above step (procedure) of the data generation, the formation of the replacement and the above-mentioned step (procedure) calculate the values of the elastic return by changing the position or quantity mentioned selected areas.

Furthermore, the method may further have the step (procedure) of the split data forming the mentioned part being formed by using a press, in given areas, and the above-mentioned step (procedure) of generating data of forming replacement can count said data forming replacement for all regions, separated at the said specified area. Furthermore, the said specified data may differ, at least one of the shape and stress distribution for each of these selected area.

In addition, the device for identifying the position of a measure against the elastic return in accordance with the present invention has the analyzer molding using a press, ispolnyayushiy numerical analysis conditions forming part of, being formed by using a press to calculate the data forming portion being formed by using a press, the data generator forming replace that selects at least some areas for parts, being formed by using a press, the molded part being formed by using a press, and generating data of forming replacement to replace at least one of the shape of the selected region and the distribution of stresses in their chosen field specified data replacement and analyzer elastic return, perform the numerical analysis of such data forming replacement for the calculation of elastic return.

The mentioned data generator forming replacement can count said data forming replacement, and the above-mentioned analyzer elastic return may repeatedly calculate the values of elastic return, by changing the position and the number referred to selected areas. In addition, the above mentioned data generator forming replacement can determine was whether the value of the elastic return the specified value or less.

The mentioned data generator forming replacement can replace at least one of the form of one or more fields that specify the value of elastic return, equal to the given value or less, and the stress distribution of that selected region these set of samenai the passed data and the above-mentioned data generator forming replacement can count said data forming replacement, and the above-mentioned analyzer elastic return may repeatedly calculate the values of elastic return, changing the position or the number mentioned selected areas.

The mentioned data generator forming replacement can split data forming said part being formed by using a press, according to specified areas and to count said data forming replacements for all of the areas separated by the aforementioned predetermined areas. Furthermore, the said specified data may differ, at least, depending on one shape and stress distribution for each of these selected areas.

The program in accordance with the present invention may be a program to identify the position of a measure against elastic return, which is used, in addition to the above program, the program analysis molding using a press that performs numerical analysis of the conditions of the molding when the molding using a press, to calculate the data forming portion being formed by using a press, and the program analysis of elastic return, perform the numerical analysis of such data forming to calculate the values of elastic return, which represent the th existing programs and which can input and output data with these analysis software molding using a press and program analysis of elastic return, ensuring the implementation of computer procedures for obtaining data forming of the above-mentioned program analysis molding using a press, and procedures for generating data forming substitute for selecting at least part of the areas of the part being formed by using a press, the molded part being formed by using a press, and data calculation of forming replacement, substitute the given data, at least one of the shape of the selected region and the distribution of stresses in their chosen field, and the inference procedure mentioned data forming replace in the above-mentioned program analysis of elastic return. The existing program analysis of elastic return calculates the values of the elastic return based on the formation of replacement, the output from the program in accordance with the present invention.

In accordance with the present invention by modifying the identified location covered by the analysis, as the cause of elastic return of the product being formed by using a press, and the numerical processing of the values of the physical properties/quantitative values of the physical properties of this identified location, and to minimize the values of the elastic return provides a method which allows to identify the location of the causes of the elastic return the ATA and just output the values of physical properties/quantitative values of the physical properties, locations, causes, allows the analysis using the method of trial and error for confirmation, and economically and effectively reduces the study of the method of forming molded element.

In addition, in accordance with the present invention due to processing the identified location for analysis as the causes of the elastic return of the product being formed by using a press, for at least some of the data values of the physical properties and the quantitative values of the physical properties of each region, separating the product formed by using a press, and display in the form of contour diagrams of the values of the elastic return for each region on the basis of the processing results a way that allows the analysis of the computer-based method of trial and error, economically and effectively reduces the identification of the location of the causes of elastic return, and economically and effectively reduces the time to study the method of forming molded product.

In addition, in accordance with the present invention by replacing the selected area intended for the analysis of the causes of elastic return, the shape and stress distribution that is different from the selected area designed to minimize the values of the elastic in the surata, a method is proposed, which allows to identify the location of the causes of the elastic return and provide a measure against this location causes and to reduce, thus, economically and efficiently the time to study the method for forming the molded product.

In addition, the present invention may modify at least one of the identified locations, and values of physical properties and the quantitative values of the physical properties of the identified location to search for the identified location and values of physical properties and quantities of physical properties to ensure that the change in elastic return within acceptable values without cutting or forming holes in the actually formed product. Thus, analyzed and molded so the product can confirm that it is the change in elastic return within acceptable values and supports the stiffness and other aspects of product quality so that you can make unnecessary measures such as cutting side or the formation of holes in the identified location of the molded product, which could degrade the quality of the product to maintain a specified amount is s change of elastic return, desired in the molded product.

In addition, the present invention provides the value of the elastic return within acceptable values without cutting or forming holes in actually molded product by replacing at least one of or both of the different forms and distribution voltage to at least one of the selected areas. Thus, analyzed, thus, the molded product can confirm the maintenance of the values of the elastic return within acceptable values and save stiffness and other aspects of product quality, so that will be supported by the set value of the elastic return required in the molded product, and thus, you can make unnecessary measures, leading to deterioration in the quality product, such as cutting side or the formation of holes in the identified location of the molded product.

Brief description of drawings

The present invention will be described below with reference to the attached drawings.

Figure 1 shows the schematic view in cross-section, representing the usual measure taken against an elastic return,

figure 2 shows views in perspective illustrating a conventional method of searching for a location, which causes de the information due to the elastic return,

figure 3 shows the configuration of functions of the device identification of the location, which is a cause of elastic return, in accordance with a variant embodiment of the present invention,

figure 4 shows a contour map representing the distribution of stresses on the results of the analysis of molding using a press, in accordance with the example of the present invention,

figure 5 shows a contour map representing the curvature of the elements in accordance with the example of the present invention,

figure 6 shows a contour map depicting the procurement elements with significant curvature in accordance with the example of the present invention,

7 shows a view representing the separation region on the basis of curvature in accordance with the example of the present invention,

on Fig shows a contour diagram illustrating the provision of a zero-voltage area or areas in accordance with the example of the present invention,

figure 9 shows the types representing the coordinate system used in the method of finite elements in accordance with a variant embodiment of the present invention,

figure 10 shows a perspective view representing an example of the selection areas of the workpiece in accordance with a variant embodiment of the present invention,

figure 11 shows the block diagram the sequence of processing operations to identify the location of the causes of the elastic return in accordance with a variant embodiment of the present invention,

on Fig shows the block diagram of the sequence of processing operations to identify the location of the causes of the elastic return in accordance with a variant embodiment of the present invention,

on Fig shows the block diagram of the sequence of processing operations to identify the location of the causes of the elastic return device to identify the location of the causes of the elastic return in accordance with a variant embodiment of the present invention,

on Fig shows the functional diagram of the device for identifying the location of the causes of the elastic return in accordance with a variant embodiment of the present invention,

on Fig shows the block diagram of the sequence of processing operations to identify the location of the causes of the elastic return in accordance with a variant embodiment of the present invention,

on Fig shows the functional diagram of the device for identifying the position of a measure against the elastic return in accordance with a variant embodiment of the present invention,

on Fig shows the block diagram of the sequence of processing operations to identify the location of the causes of the elastic return in accordance with a variant embodiment of the present invention,

on Fig show the scheme and hardware for processing the identification of the location of the causes of the elastic return in accordance with a variant embodiment of the present invention,

on Fig(a), (b) shows the species that part of the half-formed cross-section covered by the analysis of the elastic return in accordance with a variant embodiment of the present invention,

on Fig(a), (b) shows the types representing locations in the cross section and the angle of torsion of the part with a cross-section in the shape of a hat in accordance with a variant embodiment of the present invention,

on Fig shows a perspective view of the identified region A3 in accordance with a variant embodiment of the present invention,

on Fig shows a perspective view of the identified areas A4 and A5 in accordance with a variant embodiment of the present invention,

on Fig shows a perspective view of the identified areas A6-A9 in accordance with a variant embodiment of the present invention,

on Fig(a) shows a perspective view representing the identified region a10-A14 in accordance with a variant embodiment of the present invention, in the position of (b) shows the cross section representing the identified region a10-A14 in accordance with a variant embodiment of the present invention,

on Fig shows a perspective view representing the identified area A15-A17 in accordance with a variant embodiment of the present invention,

on Fig shows the form in which ERSPECTIVE, representing the identified region A18-A21 in accordance with a variant embodiment of the present invention,

on Fig shows a view representing the angle of torsion of the identified region A3 in accordance with a variant embodiment of the present invention,

on Fig shows, representing the angles of torsion of the identified areas A4 and A5 in accordance with a variant embodiment of the present invention,

on Fig shows, representing the angles of torsion of the identified areas A6-A9 in accordance with a variant embodiment of the present invention,

on Fig shows, representing the angles of torsion of the identified areas a10-A14 in accordance with a variant embodiment of the present invention,

on Fig shows, representing the angles of torsion of the identified areas A15-A17 in accordance with a variant embodiment of the present invention,

on Fig shows, representing the angles of torsion of the identified areas A18-A21 in accordance with a variant embodiment of the present invention,

on Fig shows a view representing the identified region 22 in accordance with a variant embodiment of the present invention,

on Fig shows, representing the angles of twist in case of change of calculation method identified areas and 22 in accordance with a variant embodiment of the present invention,

on Fig shows, representing the angles of torsion of the identified areas A23-A24 in accordance with a variant embodiment of the present invention,

on Fig(a), (b) shows the species represents the position of the cross section and size of the opening portion, bent in the shape of a hat in accordance with a variant embodiment of the present invention,

on Fig shows a view representing the results of example 9 in accordance with a variant embodiment of the present invention,

on Fig shows a view representing the results of example 10 in accordance with a variant embodiment of the present invention,

on Fig shown a perspective view and a view in cross-section, representing the portion of the cross-section in the shape of a hat in accordance with a variant embodiment of the present invention,

on Fig shows the types representing locations of the cross-section and the angle of torsion of the part cross-section in the shape of a hat in accordance with a variant embodiment of the present invention,

on Fig shows a view representing the identified region A35-A37 in accordance with a variant embodiment of the present invention,

on Fig shows, representing the angles of torsion of the identified areas A35-A37 (all points of integration) in accordance with a variant embodiment of the crust is asego inventions

on Fig shows, representing the angles of torsion of the identified areas A35-A37 (the most anterior and the most posterior point of integration in the thickness direction of the sheet) in accordance with a variant embodiment of the present invention,

on Fig shown a perspective view and a view in cross-section, representing an example of a workpiece in accordance with a variant embodiment of the present invention,

on Fig shows a perspective view representing an example of the separation region of the workpiece in accordance with a variant embodiment of the present invention,

on Fig shown a perspective view and a view in cross-section, represents the position of the cross section and marked point on the workpiece in accordance with a variant embodiment of the present invention,

on Fig shows a perspective view representing an example, which is in the form of a contour diagram is elastic return in each area of the workpiece in accordance with a variant embodiment of the present invention,

on Fig shows a perspective view representing an example of representing a contour diagram of the degree of effect of the elastic return in each area of the workpiece in accordance with a variant embodiment of the present invention,

on Fig shown a perspective view and a view in cross-section, representing an example of the workpiece in with the accordance with the alternative embodiment of the present invention,

on Fig shows a view representing the position of the cross section and the angle of torsion of the part cross-section in the shape of a hat in accordance with a variant embodiment of the present invention,

on Fig shows a view representing the stress distribution after the elastic return of the workpiece in accordance with a variant embodiment of the present invention,

on Fig shows a view representing the area that is selected on the basis of the stress distribution after the elastic return, in accordance workpiece with a variant embodiment of the present invention,

on Fig shows for comparison the values of the elastic return when not perform the processing and the values of the elastic return in the case of performing processing in accordance with a variant embodiment of the present invention,

on Fig shows the species represents the position of the cross-sectional and quantitative values of elasticity of the flange part of the cross-section in the shape of a hat in accordance with a variant embodiment of the present invention,

on Fig shows the types representing the stress distribution before and after the elastic return of the workpiece in accordance with a variant embodiment of the present invention,

on Fig shows the types representing the distribution of the voltage differences before and after the elastic return of the workpiece and the region of the STI, selected on the basis of the difference voltage, in accordance with a variant embodiment of the present invention,

on Fig shows for comparison the values of the elastic return when not perform the processing, and the values of the elastic return in the case of performing processing in accordance with a variant embodiment of the present invention,

on Fig shown a perspective view and a view in transverse section representing an example of a workpiece in accordance with a variant embodiment of the present invention,

on Fig shows the species in the long term, representing the position of the cross section and the twisting angle of the workpiece in accordance with a variant embodiment of the present invention,

on Fig shows the types representing the distribution of quantitative values state after molding with a press of the first and second workpieces in accordance with a variant embodiment of the present invention,

on Fig shows a view representing the differences of the quantitative state after molding with a press of the first and second workpieces in accordance with a variant embodiment of the present invention,

on Fig shows a view representing the selection area on the basis of the difference between quantitative indicators of the state in accordance with a variant embodiment of the present invention,

on Fig shows for sravnenie the values of elastic return in case when not perform the processing, and the values of the elastic return when performing processing in accordance with a variant embodiment of the present invention,

on Fig shows a view representing a part of the cross-section in the form of hats, covered by the analysis of elastic return,

on Fig shows a view representing a table of data distribution strips and voltages are replaced in accordance with a variant embodiment of the present invention,

on Fig shows, representing the separation of the workpiece on the field in accordance with a variant embodiment of the present invention,

on Fig shows the layout of the form and voltage in all designated areas of the workpiece in accordance with a variant embodiment of the present invention,

on Fig shows the species that define the position of the cross section and the magnitude of the winding in accordance with a variant embodiment of the present invention,

on Fig shows the layout view of the strip and the area within the indicated area of the workpiece in accordance with a variant embodiment of the present invention,

on Fig shows the layout view of the strip and the area within the indicated area of the workpiece in accordance with a variant embodiment of the present invention,

on Fig shows a layout view of a strip with the lowest value of elastic return, etc. in with the accordance with the alternative embodiment of the present invention,

on Fig shows the layout view of the second strip in the layout with a single strip with the lowest value of elastic return, etc. in accordance with a variant embodiment of the present invention,

on Fig shows the layout view of the second strip in the layout with a single strip with the lowest value of elastic return, etc. in accordance with a variant embodiment of the present invention,

on Fig shows the layout of the n strips, etc. in a specified area of the workpiece in accordance with a variant embodiment of the present invention, and

on Fig shows the layout of the actual strips in a specified area of the workpiece in accordance with a variant embodiment of the present invention.

Detailed description of the invention

Figure 3 shows a block diagram of a device for identifying the location of the causes of the elastic return in accordance with a variant embodiment of the present invention.

The device 10A to identify the location of the causes of the elastic return is the analyzer 11 forming with the press, the analyzer 12 of elastic return, the processor 14, the values of physical properties/quantitative values of the physical properties, the module 16 save the file, the module 18 of the input conditions of formation and the screen 19 of the output values of the elastic return.

Module 18 input conditions fo is mounia is input to the module, designed for entering data for analysis with we explain below analyzer 11 forming with the press and analyzer 12 of elastic return, such as form data (sheet thickness, length, width, curvature, strain etc) and properties (strength, elongation, or other properties and thickness of the sheet, or other forms) steel sheet, the shape of the tool (in the form of a matrix (tool) and the shape of the punch, the degree of bend, the diameter, the gap conditions lubrication), working conditions for the press (the force holding the workpiece, the load cushion, tension bars, the pressure of the press temperature and other conditions of molding. In addition, it is possible to separately set the scope of the data analysis process the data area in the CPU 14, the values of physical properties/quantitative values of the physical properties of the split pane when displaying on the screen 19 of the output values of elastic return, etc.

The analyzer 11 forming with the press takes as input the molding conditions, the input module 18 of the molding conditions, and uses the elastic-plastic finite element method for rigid-plastic finite element, finite element method with one step, method, boundary element, elemental analysis or the like to perform numerical analysis to search for the values of the voltage is of, deformation, thickness, etc. of the workpiece being formed by using a press, that is, a steel sheet, etc. Analyzer 11 forming with the press displays the results of numerical analysis in the form of thickness of the workpiece, the component values of the voltage values of the strain components and other variables and the distribution of the variables. The output display, for example, file "P org.k" in the analyzer 12 of the elastic return and polanaise below the processor 14, the values of physical properties/quantitative values of physical properties, and the module 16 save the file.

In the numerical analysis performed using this analyzer 11 forming with the press, the finite element method is used (for example, existing software PAM-STAMP, LS-DYNA, Autoform, OPTRIS, ITAS-3D, ASU/P-FORM, ABAQUS, ANSYS, MARC, HYSTAMP, Hyperform, SIMEX, Fastform3D, Quikstamp) for shape analysis based on data from the product form for molding using a press (sheet thickness, length, width, curvature, strain etc) and properties of the used metal plates (strength, elongation and other properties, and thickness, and other forms) and, if necessary, to set the shape tools (forms the matrix and punch, curvature, diameter, clearance, lubrication), the pressing conditions (temperature, pressure) and other conditions of molding, so that in numerical form paragraph is to obtain the values of the stress distribution and deformation after molding.

In addition, the analyzer 11 forming with the press can be displayed as contour diagrams of the stress distribution, curvature and other analysis results obtained using the finite element method using the software post-processing on the screen 19 of the output values of the elastic return.

The analyzer 12 of the elastic return uses the file "P org.k" analyzer output 11 forming with the press and displays the file "P rem.casen.k" data last described above processor 14, the values of physical properties/quantitative values of physical properties as input data for the analysis of elastic return. "Analysis of the elastic return" contains the calculation processing of the discharge on the basis of the output of analyzer 11 forming with the press, that is, the thickness of the sheet, the value of the component voltage values of the component deformation and other variables for the procurement and distribution of variables, using the method of elastic finite element elastic-plastic finite element method, finite element method with one step, elemental analysis, etc. and numerical analysis of the deformation rate, resulting in the workpiece, that is, the value of elastic return. The value of the elastic return is obtained by dividing the workpiece using the first finite element method and so on, is calculated for each element of the three-dimensional coordinate data. It should be noted that the deflection caused in the workpiece, that is, the value of elastic return, represents the amount of deformation at any point of this procurement, the deflection at the point of maximum displacement or at the point of minimum displacement in a specified area of the workpiece, the angle formed by any planes or lines on the workpiece, the curvature formed by any plane or line on the workpiece, etc.

The analyzer 12 of the elastic return uses the finite element method (for example, existing software PAM-STAMP, LS-DYNA, Autoform, OPTRIS, ITAS-3D, ASU/P-FORM, ABAQUS, ANSYS,. MARC, HYSTAMP drives a voltage distribution that is described in the file "P org.k"received by the analyzer 11 molding, pressing, and starts the analysis of elastic return. Calculation of elastic return in the software, for example, perform on the content together with the basic equation of finite elastic-plastic deformation or by using the discretization described in the publication "Nonlinear Finite Element Method (Corona, December 20, 1994), p.71-127. However, the elastic return can be calculated either by using elastic analysis, or by using elastic-plastic analysis.

The output results of the analysis of the elastic return of the analyzer 12 of elastic return, which includes values of elastic return, deformation, and other forms, t is VA, voltage, etc. during elastic return, the display 19 of the output values of the elastic return and output as the output file "SB org.k" on the numerical analysis performed on the file, "R org.k" input or output file "SB rem.casen.k" the result of the numerical analysis "P rem.casen.k" in the analyzer 12 of the elastic return and the last described above, the processor 14, the values of physical properties/quantitative values of the physical properties and the module 16 save the file.

The processor 14, the values of physical properties/quantitative values of the physical properties takes as input the output file "P org.k analyzer 11 forming with the press and displays the file "SB org.k" data or "SB rem.casen.k" the result of the numerical analysis performed with the analyzer 12 of elastic return, processes them, and outputs as the "R rem.casen.k" in the analyzer 12 of elastic return. It should be noted that what is referred to here as the "processing" means multiplication, at least one of the mentioned variables on the factor, the establishment of a fixed value, which includes zero, performing the four arithmetic operations, performing calculation on the basis of functions and replace any values are not fixed values. The processor 14, the values of physical properties/quantitative values of F. the physical properties can use this processing to determine the variables and the identified location, to reduce the values of elastic return.

The processor 14, the values of physical properties/quantitative values of physical properties when it receives data on one or more workpieces, that is, a product molded by the press, from the input data must be processed to separate the data product that are molded by the press, in many areas, in order to determine the identified location of the product formed by using a press. One such method is the separation region is a division of the billet in the area of equal size.

Equal size, preferably, take into account measures taken against the identified location. Thus, even if it is determined the identified location if the area is so small that effective action can be undertaken against this identified location, sometimes the results of the analysis it is impossible to use effectively. For example, if a measure against the identified location is an add strips of size 20 mm × 100 mm, may be mentioned the split pane in the form of a square of 20 mm.

As one of the ways to determine the divided areas formed products also offered the way the op is adelene of the divided regions based on the curvature or elements.

The analyzer 11 forming by extrusion can use numerical analysis to obtain the coordinate values of the nodes as the geometric information of the workpiece after the analysis of the formation and can objectively calculate the curvature of the elements and angles between the elements. In the case of a part being formed by the press working of the workpiece after deformation has an extremely large curvature on the lines of bending, such as the edge R of the stamp or the edge of the R matrix in the vertical direction from the curve compared to other places.

Here, when calculating the maximum curvature of each element and display elements of the workpiece with a curvature greater than a certain threshold, it becomes possible to identify and share other than the edge R of the stamp or the edge R of the matrix (jumper, vertical walls, flanges), as separate unconnected area.

Figure 4 - 8 shows an example of processing from the analysis of molding using a press until it is processed.

Figure 4 shows the analysis result of molding using a press. The stress distribution is presented as a contour map. Determined that the voltage level (absolute value) of the side wall on the side of the transfer rate is high. The elements and the curvature of the results of the analysis of molding using a press is shown in figure 5. Modules display from the be the CSOs color to gray represent places with a large curvature. Elements with a large curvature presents a white figure 6. Since the curvature becomes very large in places of transition level, if the display white elements on a vertical wall with a curvature greater than the threshold value, it becomes possible division into many areas along the lines of bending with the transition level. In the highlight or select individual fields, you can select areas on the basis of the characterizing forms. Figure 6 you can see the separation of the side wall with transitions level having three surfaces, jumper, vertical wall without transition level (not visible in the drawing) and the flanges on the two sides. In addition to the areas divided by 6, the areas identified for processing as the field of high voltage, based on the data forming (stress distribution), shown in figure 4, represent the areas A-A107 shown in Fig.7. In the process of determining determines whether to perform the last-mentioned processing by regions, separated by curvature and/or angle, based on the molding. For example, it is determined by the voltage level after analyzing molding using a press in each divided region.

The processing status of all elements of the areas A-A107 to reduce the voltage to zero is shown in Fig.

Here used the maximum curvature of e is of the elements, but similarly to divide the part on the field, using the angle between the elements.

In addition, if we consider the element with the cross-section in the shape of a hat without transition level, as separated fields you can select jumper, vertical walls on two sides and the flanges on the two sides. In addition, when the selected area is not flat surface, it is possible to repeat a similar methodology to select more characterizing regions.

Thus, the processor 14, the values of physical properties/quantitative values of physical properties can determine the divided areas based on the curvature or elements according to the results of the analysis of the analyzer 11 forming with the press.

The analyzer 12 of the elastic return uses the finite element method (for example, existing software PAM-STAMP, LS-DYNA, Autoform, OPTRIS, ITAS-3D, ASU/P-FORM, ABAQUS, ANSYS, MARC, HYSTAMP) introduces the stress distribution described in the "R org.k"obtained by the analyzer 11 forming with the press, and begins the analysis of elastic return. Calculation of elastic return using software tools to perform, for example, the content together with the main equation finite elastoplastic deformations or methods of sampling. However, the elastic return can be calculated either on the basis of the analysis panel the guests or on the basis of the elastic-plastic analysis.

In addition, the analyzer 12 of the elastic return can display the results of the analysis of the elastic return using the finite element method using the software post-processing on the screen 19 of the output values of the elastic return using contour diagrams. In addition, the processor 14, the values of physical properties/quantitative values of physical properties can normalize the value of the elastic return by dividing the area is divided to acquire and representative length, a representative width, a representative height, a representative thickness of the sheet, the tensile strength at break, etc. parts are molded using a press, to make the degree of influence of separated variables and elastic return is easy to understand, and outputs the data. The output can be used in the software tool further processing to display in the form of contour diagrams. Due to this normalization can easily visualize the mutual relationship between the value of the physical properties/quantitative value of the physical property and the value of the elastic return of the workpiece.

In addition, the processor 14, the values of physical properties/quantitative values of physical properties can divide the value of the elastically what about the return speed of the punch or force holding the workpiece, or other conditions of molding using a press, to determine the normalized values, and can use the software tool further processing to display in the form of contour diagrams to provide easy visual determination of the interdependence between the conditions of formation by the press and value of elastic return. This normalization values of the elastic return and display the outline scheme of its digital values can efficiently and effectively to reduce the identification of the location of the causes of the elastic return and can efficiently and effectively to reduce the time to study the method for forming the molded product.

Module 16 save the file is a module of conservation that is designed to store output of the analyzer 11 forming with the press, the analyzer 12 of the elastic return and poznayuschego below the processor 14, the values of physical properties/quantitative values of physical properties, that is, data file, "R org.k", "SB org.k", "P rem.casen.k", "SB rem.casen.k", "P trim.casen. k", etc. However, when these data files, etc. directly introduce/bring in the analyzer 11 forming with the press, the analyzer 12 of the elastic return and the processor 14, the values of physical properties/quantitative values of physical properties, such module 16 to preserve the texts are not necessarily required.

The processor 14, the values of physical properties/quantitative values of the physical properties select a part of the file regions "P org.k" output data using the analyzer 11 forming with the press and processes the at least one variable of the thickness, modulus of elasticity, modulus of plasticity, component values and voltage values of the strain components of this part of the fields. In addition, it generates the output file "P rem.easel.k" data after processing and outputs it to the analyzer 12 of elastic return. This data file can be repeatedly transmitted and received, and it consistently keep in module 16 save the file. In addition, it is possible to transfer data is not in the form of a file, and in the form of input/output data of the Executive process or flow.

Identified data location or area to determine the cause of an elastic return used in the method of finite elements can be made of one or more elements in the finite element method a thin region consisting of a set of elements, a set of contiguous elements or other sections of the module calculation part for calculating stress or strain in the calculation modules in the technology of numerical integration using the method of finite elements, i.e. the integration points (including himself as part of the points in the thickness direction of the sheet, and some points in the plane), etc. One or more elements" means the modules are separate areas in the method of finite elements, i.e. elements, whereas "section of the module of calculation" means one or a continuous set of thin areas that form the modules of the calculation in the analysis of elements. In addition, the "point of integration" usually means the point approximated integration in the finite element method. "Part of the integration point" means the part of the points for calculation of stress or strain in units of calculation methods of numerical integration using the method of finite elements and includes as part of the points in the thickness direction of the sheet, and the portion of points in the plane.

In addition, "at least one variable among thickness, modulus of elasticity, modulus of plasticity, component values and voltage values of the strain components" means at least one of, in total, 18 of factors, such as sheet thickness, modulus of elasticity (young's modulus, Poisson's ratio, modulus (tension plastic yield strength, elastic modulus, a measure of mechanical strengthening, stress or deformation in the direction of x, y and z (the sum of 3 components), using a three-dimensional coordinate system (x, y, z) for analysis, and stress shear or shear strain in the xy plane, y and zx (3 components each) part.

Figure 9 shows the form that represents the coordinate system used in the method of finite elements in positions (a) shows the coordinate system in three dimensions as a whole, while in position (b) shows the local coordinate system.

At this time, as shown in Fig.9 (a), in addition to the values of the components along coordinate axes (x, y, z), for example, as shown in Fig.9(b), is also included, in total, 12 components of stress, strain, tension, shear and shear strain in the local coordinate system (x1, x2, X3), considering a plane element 31 as the xy plane. In addition, variables, obtained by applying an appropriate voltage corresponding to the plastic deformation energy of elastic deformation (work of elastic forces), the energy of plastic deformation (working plastic deformation) and other components of the voltage or the components of the deformation and component values calculated in the form of higher voltage or increasing deformation, or other increase value components are also included.

In General, the analysis of finite elements in the analysis of sheet steel, the values of physical properties/quantitative values of the physical properties of the steel sheet is divided into square finite elements in size from 2 mm to 4 mm, However, the unit of division elements are composed with the second length, in accordance with which the value of the physical properties/quantitative value of the physical properties becomes approximately fixed, so it is not necessarily limited to squares from 2 mm to 4 mm, So a location with significant residual stress sometimes need to be divided into more, smaller finite elements. In addition, these elements are defined by the planes of three-dimensional coordinates, while the angles or curvature of surfaces of finite elements defined by comparison with other surfaces.

Thus, to identify the location of the causes of the elastic return becomes possible to share the item on the field, on the basis of the angle or curvature, and processing parts with high levels of residual stress, in order to significantly reduce the amount of calculations and, thus, provide an opportunity to more quickly identify the location of the causes of the elastic return.

As an example, the processing illustrated by way of multiplying the values of the component σ factor.

When determining component voltage, before processing the integration points are chosen field as (σx0, σyx, σz0τxy0τyz0τzx0), and strain components as (∈x0, ∈y0, ∈z0that γ xy0τyz0τzx0), the stress components (σx, σy, σz, τxy, τKτzxand components of strain (∈x, ∈y, ∈z, γxy, γKthat γzxafter processing become the following:

σx=Kxσx0, σyy0, σzz0; τyxxyτKyZ0τzxzx0

x=∈x0, ∈y=∈y0, ∈z=∈z0that γxyxy0that γKyz0that γzxzx0

Here, the processing performed by changing K in the range from -1000 to 1000. Usually the thickness of the sheet set equal to a specific value before treatment, while the modulus of elasticity and modulus set as the input module 18 input conditions of molding. For illustrations presented only for σxbut similarly may vary for other components.

In addition, it is also possible to include in the processing properties of the material (the sheet thickness, modulus of elasticity and modulus). For example, the processor 14, the values of physical properties/quantitative values of the physical properties selects the areas of the workpiece obtained from the analyzer 11 forming with the press, and multiplies, for example, the young's modulus of the selected area by a factor during processing. In this case, if we denote thicknesses of the sheet as t 0The young's modulus as E0the Poisson's ratio as ν0the modulus as F0and0n0(in the case σ=F0(∈+a0)n0before machining the selected area, sheet thickness t, young's Modulus E, and Positive Poisson ν, the modulus of F, and n (in the case of σ=F(∈+a)nafter processing become the following:

t=t0E=Cough0, ν=ν0, F=F0and=and0n=n0

Here may vary in the range from -1000 to 1000. To illustrate To the E, but it can likewise be modified for other material properties.

In addition, the processor 14, the values of physical properties/quantitative values of physical properties can be selected and processed region by modifying the file that outputs the state variable obtained from the analyzer 11 forming by the press, by direct editing. For example, it is also possible to display the contents of the file using the Workpad® or other software having a function to edit text directly overwrite the value of the component area required for processing, by performing the operation module 18 input conditions of molding, and change the value of the component, using the operations of "cut" and "paste".

With this purpose it is possible to perform a quantitative assessment of the ku of the processed variable (component) of the selected region on the elastic return.

For example, when the analyzer 12 of the elastic return shows the distribution of displacements of the nodes of finite elements on the contour diagram, or when he shows the cross-section shape, the schema of the results for each of the processed variables (components) of the selected area, you can build and compare on the screen 19 of the output values of the elastic return or display not shown in the printer and compare. In addition, when the confirmation of the values (X, Y, Z) coordinates of the node of any marked position using software or file output, it is possible to compare the digital values for each processed variable (component) selected area or to use the software, spreadsheets, etc. for plotting and comparison.

Contour diagram displayed on the screen 19 of the output values of the elastic return is obtained by repeating the processing, the values of physical properties/quantitative values of physical properties using the processor 14, the values of physical properties/quantitative values of the physical properties and calculate the values of the elastic return means of the analyzer 12 of the elastic return and precise identification of the location or variable that is causing the elastic return.

In addition, by modifying the identified region of the processor 14, the values of physical properties is/quantitative values of physical properties by choice or by multiplying the value of the component of the selected area by a factor not only σ, but also σy, τxy, or other value of the component as it is processed, then, providing the execution analyzer 12 of the elastic return analysis of elastic return and display on the output screen 18 values of elastic return, location, or variable, causing the elastic return, and by comparing the magnitude of the offset changes due to the elastic return becomes possible to accurately identify the location or variable, causing the elastic return.

In addition, when selecting by the processor 14, the values of physical properties/quantitative values of the physical properties of many areas in part, concurrently executing processing on the selected areas, it is possible to reduce the work associated with the analysis required to identify the reason.

Figure 10 shows a perspective view representing an example of the selection area part of the cross-section in the shape of a hat in accordance with a variant embodiment of the present invention.

For example, when the workpiece obtained by the analyzer 11a forming by pressing, is part of a cross-section in the shape of a hat, as shown in figure 5, the processor 14, the values of physical properties/quantitative values of the physical properties simultaneously selects many areas A1 and A2 voltage after f is Romania large than the set value, as shown in figure 10, processes the selected region A1 and A2 by multiplying them by a factor of σ and facilitates the use of the analyzer 12 of the elastic return processing results for the analysis of elastic return.

The results of the analysis of elastic return, it becomes possible to investigate the change in displacement due to the elastic return and to assess how the value of the component voltage σ applied to the areas A1, A2, affects the elastic return, using simple processing without processing for each side.

In addition, by re-division of areas, the value of elastic return in which changes to the greatest extent after the analysis of the elastic return means of the analyzer 12 of elastic return, to determine until the size of the re-divided regions becomes equal to the preset value or less, process re-split the field in the processor 14, the values of physical properties/quantitative values of the physical properties and provide re-execution analyzer 12 of the elastic return analysis of elastic return, it is possible to identify the region where the value of the elastic return is changed to the maximum extent as the cause of elastic return, and effectively identify this when the inu. It should be noted that the processor 14, the values of physical properties/quantitative values of physical properties can expect convergence by changing the values of the physical properties and the quantitative values of physical properties as operating variables so that the change in elastic return falls within the allowable values, and to calculate the degree of convergence by changing the divided regions identified by the region as an operating variable.

In addition, when the analyzer 11 forming using a press, for example, analyzes forming using finite element method and numerical method receives a distribution of values of stress and strain after molding, the processor 14, the values of physical properties/quantitative values of physical properties may select one or more items and use them as areas for processing when selecting areas. The finite element method, analytical technology to solve space is continuous processing of the object is divided into finite elements. These elements are connected in a finite number of nodes located on the sides. Offset areas in the elements is uniquely determined by functions of the form specified for individual elements, the offset nodes. For example, it is possible to display the distribution of components σ voltage received by the analyzer 11 forming with the press, and to use the element with the highest value σ as the selected area or to use a group of elements with the highest value σ and elements adjacent to this element as the selected area.

In addition, when the analyzer 11 molding using a press, for example, analyzes molding, using the technology of the elementary analysis and the numerical method receives a distribution of values of stress and strain after molding, the processor 14, the values of physical properties/quantitative values of physical properties may select one or more sections of the calculation module and use them as areas for analysis when selecting fields.

In addition, when the analyzer 11 molding using a press, for example, performs the following analysis using the finite element method and numerical method receives a distribution of values of stress and strain after molding, the processor 14, the values of physical properties/quantitative values of physical properties may select one or more integration points and use them as areas for processing when selecting areas. For example, if the finite element analysis performed by the analyzer 11 molded who I am with the help of a press, the blank is analyzed in shell elements with five integration points in the thickness direction of the sheet from the rear surface to the front surface of the plate 1, 2, 3, 4 and 5). The processor 14, the values of physical properties/quantitative values of physical properties should be used only 1 point of integration, which is situated closer to the rear surface plate of the selected item, and 5 are located furthest from the rear surface of the plate as the area for processing. In this regard, it is possible to isolate and evaluate the influence of the deformation curve obtained during contact with and deformation of a given part of the tool with bend.

Figure 11 shows the block diagram of the sequence of processing operations to identify the causes of the elastic return in accordance with a variant embodiment of the present invention.

At step S101, the input module 18 of the conditions of the molding takes as input the following molding conditions. Then, the procedure goes to step S102.

At step S102, the analyzer 11 forming with the press performs numerical analysis of the workpiece defined by the following molding conditions, and calculates the distribution of values of stress and strain after molding product molded using a press. Then, the procedure goes to step S103.

N is the step S103, the CPU 14, the values of physical properties/quantitative values of the physical properties determines the identified location, which becomes converted area. This identified location calculate the curvature and/or angle of the part being formed by the press, share molded product on the field on the basis of the curvature and/or angle, determine the divided areas based on the data forming, and identify areas for processing mentioned below. Then, the procedure goes to step S104.

At step S104 to perform the above-described processing for converting at least one of the values of the physical properties and the quantitative values of the physical properties in terms of the areas targeted for treatment at the stage in S103. Then, the procedure goes to step S105.

At step S105 calculate the value of the elastic refund based on the converted values of the physical properties and the quantitative values of the physical properties of the workpiece during forming by the press. Then, the procedure goes to step S106. Simultaneously, at step S107, the results of the elastic return display on the screen in the form of contour diagrams, etc.

At step S106 determines whether a valid value of the elastic return within acceptable values. If it is within the allowable value, the processing ends. If it is outside the limit value, the procedure goes n the step S108. It should be noted that the step S106 and step S108 can also be performed by employee - a person manually by specifying the identified location when the view size changes of elastic return.

At step S108 change identified the location and values of physical properties/quantitative values of the physical properties of the workpiece. Here it is possible to change only the identified location may change only the value of the physical properties of numerical values of physical properties and may simultaneously change both. In addition, the procedure returns to step S105. The processing performed at step S105, step S106 and step S108 may be performed by calculating the convergence so that the change in elastic return remained within the allowable values, and the processing is repeated until then, until it becomes equal to the threshold value or less.

It should be noted that when a number of repetitions of this treatment and in excess of the limited number of repetitions, the processing can be completed. In this case, the output file "SB rem.casen.k analyzer 12 of elastic return, is stored in the module 16 save the file, parses the worker - man. Worker people can view the screen 19 of the output values of the elastic is on return and search identified optimal location.

On Fig shows the block diagram of the sequence of processing operations identify the location of the causes of the elastic return in accordance with a variant embodiment of the present invention.

At step S201, the input module 18 of the conditions of the molding takes as input the first molding conditions. Then, the procedure goes to step S202.

At step S202, the analyzer 11 forming pressing performs numerical analysis part being formed by the press defined in accordance with the first formation conditions, and calculates the distribution of values of stress and strain after the formation of the product with the use of molding using a press. In addition, the analyzer 11 forming with the press performs numerical analysis of the workpiece defined by the second formation conditions, modified in at least one of the first mentioned formation conditions, and calculates the distribution of values of stress and strain product formed using a press, after molding (the value of the physical properties and the quantitative importance of physical properties). Then, the procedure goes to step S203.

At step S203, the CPU 14, the values of physical properties/quantitative values of the physical properties determines the identified location, which becomes converted the second region. This identified location is determined by calculating the difference of the physical properties and the quantitative values of physical properties for each region of the part being formed by using a press, calculated in accordance with the first molding conditions, and values of physical properties and the quantitative values of physical properties for each region of the part being formed by using a press, calculated in accordance with the second molding conditions, and determines whether the difference between the specified value.

When there is a value difference that is greater than the set value, the area having the value difference, defined as the identified location, and the procedure goes to step S204.

At step S204, the processing is performed to convert at least one of the values of the physical properties and the quantitative values of the physical properties in the area defined in step S203. Then, the procedure goes to step S205.

At step S205, the value of the elastic return is calculated on the basis of the processed values of the physical properties and the quantitative values of the physical properties. Then, the procedure goes to step S206. Simultaneously, at step S207, the results of the elastic return display on the screen using contour diagrams, etc.

At step S206 is predelut, if a valid value of the elastic return within acceptable values. If it is within the allowable value, the processing ends. If it exceeds the allowable value, the procedure goes to step S208.

At step S208, when changing conditions, which makes the second molding conditions, different from the first molding conditions, at step S202, the procedure returns to step S202, when you change the values of the physical properties/quantitative values of the physical property to determine the identified location or the specified value to determine at step 203, the procedure returns to step S203, and when the processing of step S204, the procedure returns to step S204. It should be noted that the step S208 may be performed by employee-a person who performs a determination based on the view results screen display and so on, the Processing in steps S202-S208 may be performed by calculating the convergence, which ensures that a magnitude of change of elastic return within acceptable values, and it is repeated as long as the value does not fall within the valid values of elastic return.

It should be noted that when a number of repetitions of this treatment, and in case of exceeding this limited number of repetitions education is denied can be completed. In this case, the employee-the person analyzes the output data file "SB rem.casen.k analyzer 12 of elastic return, is stored in the module 16 save the file. Employee-a person can view the screen 19 of the output values of the elastic return and can search for the optimal identified location.

On Fig shows the block diagram of the sequence of processing operations to identify the location of the causes of the elastic return in accordance with a variant embodiment of the present invention.

Phase spider S301 demonstration module 18 input conditions molding takes as input conditions of molding. Then, the procedure goes to step W302.

On stage W302 analyzer 11 forming with the press performs numerical analysis of the workpiece defined by the molding conditions, to calculate the values of the physical properties and the quantitative values of physical properties after molding product molded using a press. Then, the procedure goes to step S303.

At step S303, the analyzer 12 of the elastic return analyzes the workpiece being formed by using a press, to calculate the first value of the elastic return. Then, the procedure goes to step S304.

At the step S304 to determine whether there is an area in which at least one of the values of physical properties and quantities of fizicheskoj the property after the elastic return of the product, molded by the press, more than the specified value. If there is such a field, define the field as identified region. Alternatively, determine whether there is an area where the difference between the values of the physical properties and the quantitative values of physical properties before and after the elastic return is greater than the preset value. If there is such a field, define the field as identified region. Then, the procedure goes to step S305.

At step S305 process, at least some of the data values of the physical properties and the quantitative values of the physical properties of a particular identified location. Then, the procedure goes to step S306.

At step S306 calculate the second value of the elastic return on the basis of the processed data values of the physical properties and the quantitative values of the physical properties of the identified location. Then, the procedure goes to step S307. Simultaneously, at step S308, the result of the first or the second value of the elastic return display on the screen using contour diagrams, etc.

At step S307 to determine whether the second value of the elastic return within acceptable values. If it is within the allowable value, the processing ends. If it náchod is conducted outside of the valid values, the procedure goes to step S309.

At step S309 change variable value physical properties and the quantitative value of the physical properties or processing for determining the identified location. When you change the method of determining the identified location variables, the values of physical properties and quantities of physical properties that must be defined, change, and the above-mentioned set value change by returning to step S304. When changing variables, etc. that are performed during processing, the procedure returns to step S305. It should be noted that the step S309 may also be performed by employee-a person who performs the determination when viewing the output on the screen and on other results. Processing in steps S304-S309 can be repeated by calculating the convergence as long as the result will not be within the allowable values of elastic return.

It should be noted that, when the decision on the convergence cannot be obtained in conjunction with a valid value of elastic return, it is also possible to limit the number of repetitions of processing and finish processing through a limited number of repetitions. In this case, the output data file "SB UVC.casen.k analyzer 12 of elastic return, is stored in the module 16 save the file, can be the ü studied worker rights. Employee-a person can view the screen 19 of the output values of the elastic return and can find the best identified location.

On Fig shows the functional diagram of the device for identifying the location of the causes of the elastic return in accordance with another alternative embodiment of the present invention.

The device 10B to identify the location of the causes of elastic return, shown in Fig, when compared with the device 10A to identify the location of the causes of elastic return, shown in figure 3 has a CPU 21, a partial release of residual stresses instead of the CPU 21, the values of physical properties/quantitative values of physical properties.

The processor 21 partial release of residual stresses is a processor designed to perform processing for releasing residual pressure from a location that is considered is the cause of elastic return, i.e. the identified location.

The identified location in the same way as above, determined by calculating the curvature and/or angles for the part being formed by using a press, divide the molded product on the field on the basis of the mentioned krivi the us and/or angles, determine the split pane on the basis of such data forming and define the scope for further mentioned processing. In addition, the area can be selected by the employee-the person using the input module 18 of the molding conditions (e.g., mouse, keyboard etc) based on the data of the molding (the stress distribution etc) and indicate the range of the coordinate values, etc. when viewing curvature and/or angles displayed on the screen 19 of the output values of the elastic return. In addition, you can also install the many of the identified locations.

In addition, the identified location can be determined by calculation on the basis of the distribution of residual stresses contained in the data file "P org.k", or based on the value of the elastic return in the data file "SB org.k" and "SB UVC.casen.k" and/or distribution of residual stresses obtained by the analyzer 12 of elastic return.

Thus, the location of concentrations of residual stresses in the bottom dead center position forming with the press can be made identified location, location, concentrations of residual stress during elastic return can be made identified by the location or the maximum value of the elastic return mo is et to be made identified locations.

In addition, the processor 21 partial release of residual stresses can determine the amount of change in the elastic return could result in the release of the residual voltage without changing the values of the physical properties in the data forming the product to be cast in such a way that it can determine the status of the molded product under pressure elastic return while maintaining the strength of the molded product.

These identified location can be determined by automatic production of various combined cases and calculate the values of the elastic return when the allowable value of the elastic return is not satisfied. Usually the part with the maximum value of elastic return, usually located on the outer contour of the molded product, it is preferable to make the location of concentrations of residual stresses identified locations with priority. For example, it is possible to determine the location with the highest concentration of residual stress as a candidate for the choice with the highest priority identified location, the part where, even if the residual voltage is the maximum residual stress is large to a certain extent, and the value of the elastic return becomes maximum, as the second candidate selecting the highest priority, and the location with the second highest concentration value of the residual voltage, as the third candidate of choice with the highest priority for the identified location.

The processor 21 partial release of residual stress takes as input the output file "SB org.k analyzer 12 of elastic return, determines the identified location, as explained above, and makes the residual voltage of the identified location is equal to zero or equal to the smaller value. In addition, the data file where changes residual voltage such identified locations, defined as "R trim casel.k"corresponding to the identified location in the "R org.k"replace data "R trim casel.k" and replaced the file is designated as "P UVCcasel.k".

The processor 21 partial release of residual stresses displays "P UVCcasel.k" in the analyzer 12 of the elastic return and calculates the analyzer 12 of the elastic return values of elastic return. At this time, the analyzer 12 of the elastic return stores the calculation results, i.e. the data file "SBUVC. Casel.k" in module 16 save the file and displays the value of elastic return, shown in the data file on the screen 19 of the output values of the elastic return.

In addition, the processor 21 partial release of residual stresses compared the supports values of elastic return before the release of residual stresses in the file "SB org.k", stored in the module 16 save the file, and the values of the elastic return after the first release of residual stresses in the file "SBUVC.Casel.k" and determines whether the reduced value of the elastic return of and fell whether it is within the threshold or less.

When the value of the elastic return is within the allowable value, the processing ends. When the value of the elastic return is outside the defined valid values for processing to further reduce residual stress location residual voltage CPU 21 a partial release of residual stresses can handle partial residual stresses in another identified location and/or using a different value of the residual voltage. As another identified location, as explained above, can be selected as candidates for the location of the concentration of residual stresses in the bottom dead point of the molded using a press, the location of the residual voltage of a specified value or more and the maximum value of elastic return, location, concentrations of residual stress during elastic return, etc. Is elastic return can be automatically calculated only for these combinations or D. the natives combinations. The data file location coordinates and the data voltage of the identified location obtained at this time, that is, "R trim casen.k"receive for each of the n cases.

The processor 21 partial release of residual stress can take as input data file "P UVC.casen.k"obtained in accordance with the "R trim casen.k" for each of multiple cases, and stores the calculated file "SBUVC.casen.k" elastic return in the module 16 save the file.

On Fig shows the block diagram of the sequence of processing operations to identify the location of the causes of the elastic return in accordance with a variant embodiment of the present invention.

At step S401, the module 18 of the input conditions of the molding takes as input conditions of molding. Then, the procedure goes to step S402.

At step S402, the analyzer 11 forming with the press performs numerical analysis of the workpiece defined by the molding conditions, and calculates the distribution of values of stress and strain after molding product molded using a press. Then, the procedure goes to step S403.

At step S403, the analyzer 12 of the elastic return analyzes the values of the elastic return of the workpiece being formed by using a press. Then, the procedure goes to step S404.

At step S404 determines identified metabolities release of residual stresses. It identified the location determined by calculating the curvature and/or angles for the part, being formed by the press, by dividing the area of ready products on the basis of the curvature and/or angles, and define the scope for the release of residual stresses (S405), which will be explained below, by determining based on the data forming for each selected area. This definition is performed on the basis of residual stresses during molding with a press or during elastic return or magnitude of elastic return, etc. when the residual voltage is a specified value or more. Then, the procedure goes to step S405.

At step S405 perform processing to reduce residual stresses identified location or make it equal to zero. Then, the procedure goes to step S406.

At step S406, the value of the elastic return is calculated on the basis of the shape or properties during molding using a press, when the residual voltage of the identified locations is reduced or made zero. Then, the procedure goes to step S407. Simultaneously, at step S408, the results of the elastic return display on the screen.

At step S407 determines whether a valid value of the elastic return within acceptable is the destination. If it is within the allowable value, the processing is finished. If it is outside of the valid values, the procedure goes to step S409. It should be noted that the step S407 and step S409 may also be performed by employee-hand, however, he refers to the identified location when the view size changes of elastic return.

At step S409 identified the location change. Identified the location of the change by selecting one or more identified locations based on parts of the concentrations of residual stresses during molding with a press or during elastic return, the maximum value of the elastic return when the residual voltage is outside the specified values, and other items definition. At this stage, the identified location can also be selected manually using the input module 18 of the molding conditions. Then, the procedure returns to step S405, where the above processing is repeated as long as the result does not fall within the valid values of the elastic return to step S407.

It should be noted that, when the solution convergence can be obtained in interdependence with a valid value of elastic return, it is also possible to limit the number of repetitions of education is ODI and finish the treatment with a limited number of repetitions. In this case, the output file "SBUVC.casen.k analyzer 12 of elastic return, is stored in the module 16 save the file, can be studied worker rights. Employee-a person can view the screen 19 of the output values of the elastic return and find the best identified location.

On Fig shows the functional diagram of the device for identifying the position of a measure against the elastic return in accordance with a variant embodiment of the present invention.

Device for identifying the position of a measure against the elastic return 10C has the analyzer 11 forming with the press, the analyzer 12 of elastic return, the generator 15 data forming the replacement module 16 save the file, the module 18 of the input conditions of the molding and the screen 19 of the output values of the elastic return.

The output of the analyzer 11 forming with the press of the display, for example, as a file "R org.k" in the analyzer 12 of elastic return, polanaise below the generator 15 data forming the replacement module 16 save the file.

The analyzer 12 of the elastic return uses the output data file "P org.k analyzer 11 molding using a press and the output data file "P rem.casen.k" generator 15 data forming replacement as input for analysis of elastic return.

The output of the analyzer 12 elastic return the ATA output as the output file "SB org.k" of the numerical analysis on the input data file "P org.k or output file "SB rem.casen.k" of the numerical analysis, poznayuschego below "P rem.casen.k", the analyzer 12 of elastic return, the generator 15 data forming the replacement module 16 save the file.

The generator 15 data forming replacement filters to output file "P org.k analyzer 11 forming with the press and determines the allowable range of measures (bars etc) and divided by the allowable range of measures of position data items included in the output file. The generator 15 data forming replacement, in addition, receives the data "P trim.casen.k" shaped strips and the stress distribution from table T1 form data voltage (not shown)defined various shaped stripes and stress distribution defined in the module 16 save the file, replaces the above-described divided area and shape of stripes, and the stress distribution, and generates data of forming a replacement "P rem.casen.k".

The generator 15 data forming replacement repeats the processing for replacing the various data forms and distribution of stresses for the divided areas so that the value of the elastic return becomes a value within the specified value. This repetitive processing generates data of forming replacement by replacing all the data in the table T1 of different data voltages shape and distribution for all of the divided areas of the other data distribution voltage and shape. Therefore, the data set forming replace "P rem.casen.k generates for each case the number n.

In addition, the generator generate the data replacement can replace the specified data to replace at least one of the form of one or more fields that specify the set value or lower value of elastic return, and the stress distribution of that selected region (measure reduce the first value of the elastic return the specified data replacement, and can change the position or number of the mentioned areas selected for data calculation of formation of replacement. On the basis of such data the formation of the replacement analyzer elastic return may repeatedly calculate the value of the elastic return to reduce the first value of the elastic return and also to reduce the second value of elastic return, which reduces the value of elastic return.

In addition to the above-described divided areas also generate all kinds of reasons data forming replace to change the size of the divided areas and ensure penetration values of elastic return within the specified values in accordance with the selected data form and the stress distribution.

In addition, the generator 15 generate the data replacement can divide the values of the elastic return speed of the punch or power hold is ahatovici, or other conditions of formation by extrusion to search for normalized values. Software post-processing can be used to provide a simple visual determination of the interdependence between the conditions of formation by the press and value of the elastic return using contour diagrams. This normalization values of the elastic return and display using contour diagrams of its numeric values can efficiently and effectively to reduce the identification of the location of the causes of the elastic return and can efficiently and effectively to reduce the time study method of forming a molded product.

Module 16 save the file is a tape drive module, designed to store the output of the analyzer 11 forming with the press, the analyzer 12 of the elastic return and poznayuschego below generator 15 data forming replacement, that is, data file, "R org.k", "SB org.k", "P rem.casen.k", "SB rem.casen.k", "P trim.casen.k", etc. However, when these data files, etc. directly enter/output between the analyzer 11 forming with the press, the analyzer 12 of the elastic return and generator 15 data forming replacement, the module 16 save the file not necessarily required.

A contour map displayed on the screen 19 of the output values of the Oia elastic return provides the ability to visually identify outcomes measures against elastic return, consisting of the replacement forms and distribution of stresses when re-calculating the values of the elastic return means of the analyzer 12 of elastic return, based on the formation of replacement, using the data generator 15 of forming a replacement.

On Fig shows the block diagram of the sequence of processing operations to identify the location of the causes of the elastic return in accordance with a variant embodiment of the present invention.

At step S501, the module 18 of the input conditions of the molding takes as input conditions of molding. Then, the procedure proceeds to step S502.

At step S502, the analyzer 11 forming with the press performs numerical analysis of the workpiece determined by the conditions of formation to calculate the distribution of values of stress and strain after molding product molded using a press. Then, the procedure goes to step S503.

At step S503, the data generator 15 forming replace defines the area that becomes the replacement area in the procurement of the data processing. The replacement area becomes an area that is large enough to change the shape or distribution of stresses. In addition, the generator 15 data forming replace selects data form Il the distribution of stresses for the replacement table T1 data of the stress distribution of the form, replaces form data or the stress distribution for the region to replace the molding and transmits data 15 forming the replacement of the analyzer 12 of elastic return. Then, the procedure goes to step S504.

At step S504 is elastic return count data for 15 of the formation of replacement. Then, the procedure goes to step S505. Simultaneously, at step S507, the values of elastic return display on the screen in the form of contour diagrams, etc.

At step S505 determines whether the value is elastic return within acceptable values. If it is within the allowable value, the processing ends. If it exceeds the allowable value, the procedure goes to step S507.

At step S507 change in at least one area for a replacement and the data is replaced by the form or distribution of stresses. Here can change only the area for a replacement, subject to change only the form data or the stress distribution or can be changed simultaneously. In addition, the procedure returns to step S503. Processing in steps S503-S507 may be performed by calculating the convergence so that the value of elastic return was within acceptable values, and this processing is repeated until then, until it reaches the limits of valid values.

It is etiti, what this treatment does not restrict in advance the permissible values of elastic return. It is also possible to calculate the case, providing the minimum value of the elastic return, by performing analysis of elastic return to step S504 for all combined cases area to replace and form data replacement and stress distribution.

In addition, the above description referred to the calculation of the convergence using the values of the elastic return as the target variable and using the area for replacement, form data, and distribution of stresses, as the operating variables, but if the number of these operating variables becomes extremely large, the space is extremely large, so sometimes it becomes difficult to find the optimal solution or a solution within acceptable values. In this case, it is possible to use the genetic algorithm, neural network, or other known algorithm for finding optimal solutions, etc.

On Fig shows a diagram of the hardware device to identify the location of the causes of the elastic return in accordance with a variant embodiment of the present invention. The processing described above, the analyzer 11 of the molding with a press of the analyzer 12 of the elastic return of the processor 4, the values of physical properties/quantitative values of physical properties, generator 15 data forming replacement and processor 21 the partial removal of the residual stresses are defined in the program 100. This program 100 may also work in the computer 90. In the computer 90 includes a CPU 91, designed to perform the necessary processing, the storage device 92 to save processing result (for example, RAM (random access memory)), display 93, the input device 94, such as a keyboard or mouse, hard drive 95, the external device 96 to the data storage device, such as a CD/DVD drive (CD-ROM, digital versatile disk), NIC (XI, NIC) 97 and 98 printer. The computer 90 may be connected to another computer 90A via network 99 using Ethernet cable®connected to NIC 97.

The program 100 is contained on the data carrier, which is loaded from an external device 96 drive data or downloading from another computer 90A via network 99 and remain under the control of the CPU 91 on the hard disk 95 computer 90. Then saved the program 100 is executed using the CPU 91, and preserve it as completed the process or thread in the storage device 92. For example, processing in the analyzer 11 forming with the press, the analyzer 12 of elastic return, the processor 14, the values of physical properties/quantitative values of the physical properties, the gene is the operator 15 data forming a replacement or in the processor 21 partial removal of the residual voltage becomes Executive process or thread. The above data file or data type/output between the Executive processes or threads. In addition, these Executive processes or threads are present in distributed form in another computer 90A. Processing can be performed in a distributed form using the computer 90 and the other computer 90A.

In addition, the module 18 of the input conditions of the molding and the screen 19 of the output values of elastic return, shown in figure 3, can be an input device 94 and the display 93. The above module 16 save the file may be represented by a hard disk 95. The program 100 may also be stored on the hard disk 95. In addition, the above-described output contour diagram on the display 93 may be replaced by o in the printer 98.

Example 1

Examples are used for a more detailed explanation of the present invention.

On Fig presents views depicting a portion of the cross-section in the form of hats, corresponding to the analysis of elastic return in accordance with a variant embodiment of the present invention, in which the position (a) shows a view in perspective and in position (b) shows a view in section of the same part. It consists of jumpers W0, side walls W1 and W2 and the flanges F1 and F2.

For the numerical analysis performed by the analyzer 11 forming with the press and analyzer 12 of elastic return, used westwoodi software PAM-STAMP of simulation analysis in the formation of coatings on the basis of the finite element method. For the analysis of elastic return of the used analysis of elasticity using the static implicit method.

Used the conditions of forming the represented data sheet steel high strength related properties of metallic plates plate thickness of 1.6 mm and a tensile strength class 780 MPa. In addition, the shape tools (matrix, punch, holder) was modeled by shell elements and analyzed, assuming a rigid body. The gap between the matrix and the stamp was the same as the thickness of the sheet, that is, of 1.6 mm. Introduced the coefficient of friction is 0.15, and the force holding the workpiece was set to 60 tons.

On Fig shows a view representing the position in the cross section and the angle of torsion of the part cross-section in the shape of a hat in accordance with a variant embodiment of the present invention, in which the position (a) shows a view in perspective and in position (b) shows a view in section of the same part.

The obtained results were processed using the software post-processing to obtain the coordinates of the points forming the cross-section, the provisions of a and b, shown in Fig, and to determine the angle 9, formed by the crosspiece of the cross-sections. As the values of the elastic return" here used the angle θ.

On Fig shows a perspective view representing the ID manually is cireundeu region A3 in accordance with a variant embodiment of the present invention.

On Fig shows a perspective view representing the identified areas A4 and A5 in accordance with a variant embodiment of the present invention.

On Fig shows a perspective view representing the identified region A6-A9 in accordance with a variant embodiment in accordance with the present invention.

On Fig(a) shows a perspective view representing the identified region a10-A14 in accordance with a variant embodiment of the present invention, Fig(b) shows a view in cross-section, representing the identified region a10-A14 in accordance with a variant embodiment of the present invention.

On Fig shows a perspective view representing the identified area A15-A17 in accordance with a variant embodiment of the present invention.

On Fig shows a perspective view representing the identified region A18-A21 in accordance with a variant embodiment of the present invention.

On Fig shows a perspective view representing the identified region 22 in accordance with a variant embodiment of the present invention.

The results of the change of the stress components and processing of the elastic return for identified areas A3-A21 shown in Fig-25, below.

Stress components before processing at the points of integrirovanie the selected areas were defined as (σ x0, σy0, σz0τxy0τyz0τzx0), the components of the strain were determined as follows : (∈x0, ∈y0, ∈z0that γxy0that γyz0that γzx0), the stress components after treatment were obtained as (σx, σy, σzτxyτKτzx) and the components of the strain were obtained as (∈x, ∈y, ∈z, γxy, γKthat γzx).

Sheet thickness was defined as the value used before treatment, without changes, while the modulus of elasticity and modulus were determined as the input values of the analyzer 11 molding using a press used without modification. The processed value of stress and strain is taken as the result file processing.

Table 1 shows the results for specific examples to analyze the interdependence between the processed variables identified areas and the twisting angle. Table 1 shows the identified areas and variables to change processing

All the elements belonging to each area, were analyzed for the presence of elastic return, using the processed variables received by the processor 14, the values of physical properties/quantitative values of physical properties.

The results were processed using the prog is mnogo means subsequent processing to obtain the coordinate values of points forming the cross-section of positions a and b shown in Fig, and finding the angle θ, formed by a dam cross section.

On Fig shows a view representing the angle of torsion of the identified region A3 in accordance with a variant embodiment of the present invention.

The result σxthe area A3 is mainly manifested in the θ compared with the result of analysis of an elastic return in case of failure of treatment. This has identified that the impact of σxthe area A3 on θ was great. These results determined that in order to make the change in elastic return equal to the threshold value or less, it is enough to change the value of σxarea A3.

On Fig shows, representing the angles of torsion of the identified areas A4 and A5, in accordance with a variant embodiment of the present invention.

The result of the processing area A4 is mainly manifested in the θ compared with the processing region A5 and more evident in θ compared with the results of analysis of elastic return, also in the case of non-treatment. In this regard, we have determined that the value of σxarea A4 has a greater impact on θ in comparison with σxthe area A5. From this result it was determined that in order to make the change in elastic return is as equal to the threshold value or less, just change the value σxin the area A4 on the value of the area A5.

On Fig shows, representing the angles of torsion of the identified areas A6 and A9 in accordance with a variant embodiment of the present invention.

The results of the processing areas A6, A7, A8 and A9 less manifest in θ and closer to 0 compared with the results of the analysis of the elastic return in case of failure of treatment. For this reason, has determined that the impact of stress σxareas A6, A7, A8 and A9 for θ was great.

On Fig shows, representing the angles of torsion of the identified areas a10 and A14 in accordance with a variant embodiment of the present invention. On this basis the results of the processing areas a10-A14, in the case processing area A11, the value of θ becomes the smallest in comparison with the results of the analysis of elastic return, in case of failure of treatment. Accordingly determines that the effect of voltage on the region A11 for θ large.

On Fig shows, representing the angles of torsion of the identified areas A15 and A17 in accordance with a variant embodiment of the present invention. On this basis the results of the processing areas A15-A17, in the case processing area A16, the value of θ becomes the smallest in comparison with the results of the analysis of the elastic return in case implement the program processing. Accordingly determines that the effect of voltage on the area A16 if θ is large.

On Fig shows, representing the angles of torsion of the identified areas A18 and A21 in accordance with a variant embodiment of the present invention. Area A16 was divided into areas A18, A19, A20, A21, and in each divided region were analyzed by elastic return. Based on this, the results of the processing areas A18-A21, in the case of the processing region A20, the value of θ becomes the smallest in comparison with the results of the analysis of the elastic return in case of failure of treatment. In this regard, determines that the voltage region A20 has the greatest influence on θ. Thus, by identifying areas with a high degree of influence over a large area, separate areas and perform processing in this range, and research impact, it becomes possible to effectively identify the cause of elastic return.

On Fig shows, representing the angles of twist when changing the calculation method identified region 22 in accordance with a variant embodiment of the present invention. Because of this, in the case of method 2 processing, the value of θ becomes the smallest in comparison with the results of the analysis of the elastic return in case of failure of treatment or in the case of method 1 on the processing. For this purpose, define that θ can be reduced when approaching the stress distribution for σxreplaced in accordance with method 2 processing for the selected region A22.

On Fig shows, representing the angles of torsion of the identified areas A23 and A24 in accordance with a variant embodiment of the present invention. Here area A23 and A24 are presented as areas representing different points of integration in the thickness direction of the sheet. This case was investigated based on the analysis with five integration points. The point of integration numbered 1-5 in the order from the inner surface (the surface of the punch) to the outer surface (the surface of the matrix). In the area A11 all points of integration, in addition to point 3 integration in the Central plane in the direction of thickness of the sheet (points 1, 2, 4, 5 integration) was the region A23. In addition, in the area A11, point 3 of integration in the Central plane in the direction of thickness of the sheet area A24. In accordance with the results shown in Fig, the results of the analysis of the elastic return in the field A23 and in the field A24 become essentially equal. Influence points (1, 2, 4, 5) integration, in addition to the Central plane in the direction of thickness, and point 3 integration in the Central plane in the thickness direction of the sheet p is being, in the same way. Thus, by specifying a region for each point of integration in the thickness direction of the sheet it is possible to investigate the degree of influence divided by the influence of bending stresses in the thickness direction of the sheet (front to back), and the influence of the voltage in the Central plane in the direction of thickness of the sheet.

Example 2

On Fig shows the species that part of the cross-section in the form of hats, covered by the analysis of the elastic return in accordance with a variant embodiment of the present invention, where the position (a) shows the perspective view, and in the position (b) shows a view in cross section of the same part. The cross-section in the form of hats is a symmetric left and right form. Width used punch was 80 mm, the height of the molding was 80 mm and the width of the workpiece was obtained 100 mm

For the numerical analysis performed by the analyzer 11 forming with the press and analyzer 12 of elastic return, used existing software PAM-STAMP simulation analysis when forming plate, based on the finite element method. For the analysis of elastic return of the used elastic analysis based on the static implicit method.

Used the conditions of molding, which amounted data sheet high-strength steel, having as St. Istv metal plate thickness of 1.6 mm sheet and the tensile strength class 780 MPa. In addition, given the symmetrical cross-sectional shape in the form of hats, the analysis was performed in symmetrical conditions for half of the region, as shown in Fig(b). In addition, the shape tools (matrix, punch, holder) was modeled by shell elements and analyzed, assuming a rigid body. The gap between the matrix and punch were maintained the same as the thickness of the sheet, that is, of 1.6 mm. Introduced the coefficient of friction of 0.15 and established force holding the workpiece 10 tons.

The obtained results were processed using the software post-processing to obtain coordinate values before and after analysis of the elastic return point position, shown in Fig(b), to determine the magnitude of ∆ D of the hole cross-section. Here is the elastic return means the value of ∆ D of the hole.

Table 2 shows the cases studies to analyze the interdependence between the processed values of the identified areas and quantities of holes. Table 2 shows the identified region and the variables changed during processing.

Table 2
Case studyIdentified areaProcessed per the Menno
9Allσx=5xσx0, σy=5σy0, σz=5xσz0,
τxy=5τy0τK=5τxyx0τzx=5xzx0
10Point 5 integration of all elementsσx=5xσx0, σy=5σy0, σz=5xσz0,
τxy=5τy0τK=5τxyx0τzx=5xzx0

In the case of 9 a single item with the lowest number of the first element is used as the identified region, the components of the voltage changed as a result of processing and performing the analysis of elastic return. The same analysis was repeated in order of least number of elements for the analysis of all elements.

In the case of a 10 point 5 of integration of one element with the lowest number of the first element is used as the identified region, the stress components were changed as a result of processing and performing the analysis of elastic return. The same analysis was repeated in the order of least number of elements for the analysis points 5 integration of all elements.

Stress components before processing points integrated the selected region amounted to (σ x0, σy0, σz0τxy0τyz0τzx0), the components of the strain was (∈x0, ∈y0, ∈z0that γxy0that γyz0that γzx0), the stress components after processing was (σx, σy, σzτxyτKτzx) and the components of the deformation was (∈x, ∈y, ∈zthat γxythat γKthat γzx).

The thickness of the sheet had a value before processing used without change, while the modulus of elasticity and modulus represented the input of the analyzer 11 forming with the press, which was used without modification. The processed voltages or deformation deduced as a result file processing.

All the elements belonging to each area, were analyzed in relation to the elastic return using the processed variables received by the processor 14, the values of physical properties/quantitative values of physical properties.

On Fig presents the elements that make up 5% of the total number of items in the order from larger values of ∆ d ∆ d values holes all items obtained during the case study 9 in accordance with a variant embodiment of the present invention. With this in mind, we determined that the elements that significantly affect ∆ D, is concentrated in areas closer to the shoulder R PU is Nana.

On Fig displays the elements that make up 5% of the total number of items in the order a larger value of ∆ D, ∆ d values holes all elements obtained from the study of 10 cases, in accordance with a variant embodiment of the present invention. For this purpose he determined that elements with point 5 of integration, significantly affecting ∆ D, is concentrated in areas closer to the center of the vertical wall.

Example 3

On Fig shows the species that part of the cross-section in the form of hats, covered by the analysis of the elastic return in accordance with a variant embodiment of the present invention, where the position (a) shows the perspective view, and in the position (b) shows a view in cross section of the same part. It consists of jumpers WO, side walls W1, W2 and the flanges F1, F2.

The purpose of the numerical analysis performed by the analyzer 11 forming with the press and the analyzer 12 of elastic return, used existing software PAM-STAMP of simulation analysis in the formation of coatings on the basis of the finite element method. For the analysis of elastic return of the used elastic analysis based on the static implicit method.

The molding conditions used here, was a steel data sheet high strength, having, as properties, metallic place the inu with sheet thickness of 1.6 mm with a tensile strength class 780 MPa. In addition, the shape tools (matrix, punch, holder) was modeled by shell elements and analyzed, assuming a rigid body. The gap between the matrix and punch set the same as the thickness of the sheet, that is, of 1.6 mm. Introduced the coefficient of friction of 0.15, set the force holding the workpiece 600 kN.

On Fig shows the types representing locations of the cross-section and the angle of torsion of the part cross-section in the form of hats, which is at position (a) shows the perspective view, and in the position (b) shows a view in cross section of the same part.

The obtained results were processed using the software with the subsequent processing to obtain the coordinate values of the points forming the cross-section of positions a and b shown in Fig(a), and determined the angle θ formed by the bridges of cross-sections. Here is the elastic return" defined angle θ.

At the stage of determining the identified location area for treatment were selected and were divided on the basis of the curvature according to the finite elements of the workpiece. Using the program of calculation of curvature for reading information element and the coordinate values of a node of the workpiece according to the analysis of molding using a press in the calculation of the curvature of the workpiece and the display on the workpiece elements to the curvature of 0.01 or greater is, the workpiece divided by the area of the flanges, jumpers and vertical walls. In addition, a vertical wall with a difference of level was divided into these three areas A35-A37, as shown in Fig. If we consider the voltage levels of the regions after forming by the press, the voltage level of the vertical wall with the difference between high level, so the field A35-A37, shown in Fig, identified and selected for processing.

During processing did sample from a file, in which were derived values of stress or strain, obtained from the molding, using a processing program having the tool output file. Each area A35-A37, shown in Fig, were treated as follows at the integration points of the elements belonging to the region:

σx=0, σy=0, σz=0, τxy=0, τK=0, τzx=0

x=∈x0, ∈y=∈y0, ∈z=∈z0that γxyxy0that γKyz0that γzxzx0

Here stress components before processing in the integration points of the selected region set as (σx0, σy0, σz0τxy0τyz0τzx0), the components of the strain was determined as (∈x0, ∈y0, ∈z0that γxy0that γyz0that γzx0), the stress components after processing received as (σx, σyxyτKτzx) and the components of the deformation obtained as (∈x, ∈y, ∈zthat γxythat γKthat γzx). The thickness of the sheet amounted to the value before treatment, was used without modification, while the modulus of elasticity and modulus set as input values in the process (i), used without changes. Processed values of stress and strain taken out as the output processing using the output file.

In the analysis phase of the elastic return file processing result obtained by processing, was introduced in existing software PAM-STAMP simulation analysis of the formation of coatings for analysis of elastic return. For the analysis of elastic return of the used analysis of elasticity using the static implicit method. Processing and analysis of elastic return in the areas of said division areas. The obtained results were processed using the software post-processing to obtain the coordinate values of the points forming the cross-sectional positions a and b shown in Fig, and determined the twist angle θ formed by the bridges of cross-sections in positions a and b as the value of elastic return.

On Fig shows the results of the twist angle θ, receiving the data by evaluating the results of the analysis of elastic return. In accordance with this, the twist angle θ becomes the least without performing the processing in the processing region A35 in the results of processing areas A35-A37. On this basis it was determined that the influence of the voltage region A35 on the twist angle θ is large.

Example 4

With the exception of processing performed the same calculations as in Example 3. In the processing performed sample from a file, in which were derived values of stress or strain, obtained from the results of the analysis of forming, by using the processing program with the tool output file. Region A35-A37, shown in Fig, were processed as follows by using the handle at the front and at the rear of the integration points in the thickness direction of the sheet elements, which belong to the field for each field:

σx=0, σy=0, σz=0, τxy=0, τK=0, τzx=0

x=∈x0, ∈y=∈y0, ∈z=∈z0that γxyxy0that γKyz0that γzx=Yzx0

Here stress components before processing in the integration points of the selected area was (σx0, σy0, σz0τxy0τyz0τzx0) the components of the deformation was (∈x0, ∈y0, ∈z0that γxy0that γyz0that γzx0), the stress components after processing the left (σ x, σy, σzτxyτKτzx) and the components of the deformation was (∈x, ∈y, ∈zthat γxythat γKthat γzx). The thickness of the sheet as the value before processing used unchanged, while the modulus of elasticity and modulus amounted to an input value in the processing (I)without modification. Processed values of stress and strain is taken as the output processing using the output file.

On Fig shows the results of the twist angle θ (the most anterior and the most posterior point of integration in the thickness direction of the sheet), the resulting estimates of the cross-section analysis of elastic return. The twist angle θ becomes smaller in the case of non-processing and processing region A35 in the results of processing areas A35-A37. Taking this into account, we have determined that the impact of stress in the field A35 on the twist angle θ is large.

Example 5

On Fig shown a perspective view and a view in cross-section, representing an example of a part being formed by the press, i.e. the workpiece in accordance with a variant embodiment of the present invention. As shown in Fig, procurement covered by the analysis, is part of a cross-section in the shape of a hat.

First, as the analysis of the formation with pomodorini, used to analyze existing software LS-DYNA simulation analysis in the formation of coatings on the basis of the finite element method. Used data from sheet steel of high strength, having, as the properties of the metal plate, the sheet thickness of 1.4 mm and a tensile strength class 590 MPa. In addition, the shape of the tool (matrix, punch, holder) was modeled on the basis of shell elements and analyzed, assuming a rigid body. The gap tool was 0 mm Introduced the coefficient of friction of 0.1 when installing the load forming 1400 kN.

The program for handling the values of the physical properties/quantitative values of the physical properties selects from the file, which were derived values of stress or strain resulting from analysis of molding using a press, as input information, and divides the blank on the field for processing.

On Fig shows a perspective view representing the split pane in the event of separation of the workpiece shown in Fig, into 10 equal parts in the X direction and at a fixed curvature in the directions Y and Z in accordance with a variant embodiment of the present invention. Here all the points of integration of elements belonging to each area, were treated as follows by using the tools in the processing:

σx=0, σy=0, σz=0, τxy=0, τK=0, τzx=0

x=∈x0, ∈y=∈y0, ∈z=∈z0that γxyxy0that γKyz0that γzxzx0

Here stress components before processing in the integration points of the selected area were defined as (σx0, σy0, σz0τxy0τyz0τzx0), the components of the strain were determined as follows : (∈x0, ∈V0, ∈z0that γxy0that γyz0that γzx0), the stress components after treatment were obtained as (σx, σy, σzτxyτKτzx) and the components of the deformation was (∈x, ∈y, ∈zthat γxythat γKthat γzx). The thickness of the sheet amounted to the value before treatment, used without change, while the modulus of elasticity and modulus were determined as the values entered into the software LS-DYNA in the analysis of compaction used without changes. Processed value of stress and strain is taken as the output of the processing means of the output file.

When processing analysis of elastic return used the above software LS-DYNA. Output of program execution, the values of physical properties/quantitative values of physical properties were introduced in programs the second tool LS-DYNA for the analysis of elastic return. For the analysis of elastic return of the used elastic analysis based on the static implicit method. Processing and analysis of elastic return in each area were repeated when the separation of the fields.

On Fig shows a view representing a cross-section before and after the elastic return and displacement in the Z-direction of a point, denoted as V, that is, the value of elastic return, in accordance with a variant embodiment of the present invention. On Fig shows a contour map representing the value of the elastic return in each region processed in accordance with a variant embodiment of the present invention. This contour map was obtained using the software post-processing LS-PREPOST the output of the software LS-DYNA. As you can see in Fig, the region with the higher value of elastic return can be identified as the location of the causes of the elastic return.

Example 6

Covered part was specified as part of the cross-section in the shape of a hat with the shape and dimensions shown on Fig.

First, to analyze molding using a press used the above software LS-DYNA. Use the data sheet of high strength steel having, as properties, the metal plate with sheet thickness of 1.4 mm and the limit p is echnosti rupture class 590 MPa. In addition, the shape of the tool (matrix, punch, holder) was modeled by shell elements and analyzed, assuming a rigid body. Gap instrument was set to 0 mm Introduced the coefficient of friction of 0.1. The load forming installed 1400 kN.

A program for executing processing, the values of physical properties/quantitative values of physical properties makes the selection from the file, which were derived values of stress or strain resulting from analysis of the formation using the press as a source of information and parts of the workpiece on the field for processing. The workpiece divided by the area shown in Fig, and all points of integration of elements belonging to the areas that were treated as follows by using the processing tools:

σx=0, σy=0, σz=0, τxy=0, τK=0, τzx=0

x=∈x0, ∈y=∈y0, ∈z=∈z0that γxyxy0that γKyz0that γzxzx0

Here stress components before processing in the integration points of the selected area were defined as (σx0, σy0, σz0τxy0τyz0τzx0), the components of the strain were determined as follows : (∈x0, ∈V0, ∈z0that γxy0that γyz0that γzx0), the stress components after processing were obtained ka is (σ x, σy, σzτxyτKτzx) and the components of the deformation after processing were obtained as (∈x, ∈y, ∈zthat γxythat γKthat γzx). Sheet thickness was defined as the value before processing, such as it is, while the modulus of elasticity and modulus were determined as the values entered by the software LS-DYNA, as analysis molding using a press. Processed value of stress and strain is taken as the output processing using the output file.

In the analysis of elastic return file processing result obtained by the program execution processing, the values of physical properties/quantitative values of physical properties were again introduced in the software LS-DYNA for the analysis of elastic return. For the analysis of elastic return of the used elastic analysis is performed using the static implicit method.

Here, the processing performed by the processing program, the values of physical properties/quantitative values of the physical properties and analysis of elastic return of the executed software LS-DYNA, was repeated for each field.

On Fig shows a perspective view, showing the contour of the scheme, the degree of effect of the elastic return for each area in accordance with what version of the embodiment of the present invention.

The offset in the Z-direction points In belonging to the cross-sectional And before and after the elastic return shown in Fig, asked how the value of elastic return. Here the normalized value, i.e., the degree of influence of elastic return, defined as the degree of the effect of the elastic return = value of the elastic return ÷ area of each divided region x1000+10. The degree of effect of the elastic return in each treatment were processed using the software and then processed and displayed as a contour diagram shown in Fig. As you can see in Fig, the region D with the higher value of elastic return can be identified as the location of the causes of the elastic return.

It should be noted that the degree of effect of the elastic return is a sample, normalized to the divided areas, but can also be set as the value divided by one of the representative length of the representative width, representative, height representative of the thickness and tensile strength of the part being formed by using a press. Using a representative size for finding the degree of influence of elastic return, it is possible to quantify the influence of the size of the workpiece on the elastic return, and determination identified the place is the provisions and measures against it becomes more simple. For example, when the degree of influence of elastic return, normalized to the representative size in the longitudinal direction, is a value greater than in the transverse direction becomes fair the fact that the elongation of the shape of the strip in the longitudinal direction allows a greater degree to reduce the value of the elastic return and makes it easy to get other information.

In addition, the degree of effect of the elastic return divided by the speed of the punch or force holding the workpiece, can be displayed using contour diagrams. Using this variable to display using contour diagrams, it becomes possible to provide not only measures in the form of the workpiece, to reduce the values of elastic return, but also to obtain quantitative material to determine the conditions of molding under pressure. So can be taken on the basis of the formation under pressure identified location.

The above-explained display using contour diagrams as a way to display the values of the elastic return and the degree of influence of elastic return, but the value of elastic return, etc. can also be displayed using vector diagrams or strips or other three-dimensional objects, or you can display by using other well-known ways is and display.

As the program further processing to display using contour diagrams you can use LS-PREPOST, HyperView, Animator, Meta-Post, etc.

Example 7

On Fig shows the species that part of the cross-section in the form of hats, covered by the analysis of the elastic return in accordance with a variant embodiment of the present invention, in which the position (a) shows a view in perspective and in position (b) shows a view in cross section of the same part. It consists of jumpers W0, side walls W1 and W2 and the flanges F1 and F2.

For the numerical analysis performed by the analyzer 11 forming with the press and the analyzer 12 of elastic return, used existing software PAM-STAMP of simulation analysis in the formation of coatings on the basis of the finite element method. For the analysis of elastic return of the used elastic analysis based on the static implicit method.

Used molding conditions were a data sheet of high strength steel having as properties of the metallic plate plate thickness of 1.6 mm and a tensile strength class 780 MPa. In addition, the shape of the tool (matrix, punch, holder) was modeled using shell elements and analyzed on the basis of the assumption of the rigid body. The gap between the matrix and punch set takinge, as the thickness of the sheet, that is, of 1.6 mm. Introduced the coefficient of friction is 0.15, and the force holding the workpiece set as 600 kN.

On Fig shows the types of provisions cross-section and the angle of torsion of the part cross-section in the shape of a hat in accordance with a variant embodiment of the present invention, in which the position (a) shows the perspective view, and in the position (b) shows a view in cross section of the same part.

The obtained results were processed using the software post-processing to obtain the coordinate values of the points forming the cross section at positions a and b shown in Fig(a), and to determine the angle θ formed by the crosspiece of the cross-sections. Here is the elastic return" was specified as the angle θ tightening.

On Fig shows a view representing the stress distribution after the elastic return of the workpiece. The processor 14, the values of physical properties/number of physical property selects the region with the voltage level at the 5%level, on the basis of the stress distribution obtained from the analyzer 12 of elastic return, shown in Fig.

On Fig shows a view representing the area that is selected on the basis of the stress distribution after the elastic return of the workpiece. On Fig shows the region R10, is selected by the voltage level at the 5%level.

- % The COP 14, the values of physical properties/quantitative values of the physical properties performs the following operations for all integration points of the elements, belong to a selected region in the following way:

σx=0, σy=0, σz=0, τxy=0, τK=0, τzx=0

x=∈x0, ∈y=∈y0, ∈z=∈z0that γxyxy0that γKyz0that γzxzx0

Here stress components before processing in the integration points of the selected area were defined as (σx0, σy0, σz0τxy0τyz0τzx0), the components of the strain were determined as follows : (∈x0, ∈y0, ∈z0that γxy0that γyz0that γzx0), the stress components after treatment were defined as (σx, σy, σzτxyτKτzxand components of deformation were identified as (∈x, ∈y, ∈zthat γxythat γKthat γzx). Sheet thickness was defined as the value before processing used unchanged, while the modulus of elasticity and modulus were determined as the values entered in the software PAM-STAMP when the analysis processing extrusion, such as they were. The processed value of the voltage or strain taken as the result file processing tool file output.

In the analysis of elastic return used the above software PAM-STAMP. The output of the program executing on the working values of the physical properties/quantitative values of physical properties, introduced in software PAM-STAMP for the analysis of elastic return. For the analysis of elastic return of the used elastic analysis based on the static implicit method.

On Fig shows for comparison the values of the elastic return in case of failure of processing and the values of the elastic return in case processing. On this drawing you can see that the processing of the selected region R10 shown in Fig, reduced values of elastic return. The selected region R10 shown in Fig, can be identified as the location of the causes of the elastic return.

Example 8

On Fig shows the form that represents the position of the cross-section and the amount of elasticity of the flange part of the cross-section in the shape of a hat in accordance with a variant embodiment of the present invention, where the position (a) shows a view in perspective and in position (b) shows a view in cross section of the same part. The value of elastic return was defined as the offset of the end point of the cross-section before and after the elastic return, that is, as the value of the elasticity of the flange.

For the numerical analysis performed by the analyzer 11 forming with the press and the analyzer 12 of elastic return, used existing software PAM-STAMP of simulation analysis in the formation of coatings on the basis of the e finite element method. For the analysis of elastic return of the used elastic analysis using the static implicit method.

Used molding conditions were a data steel sheet of high strength having as properties of the metal plate, the sheet thickness of 1.6 mm and a tensile strength class 780 MPa. In addition, the shape of the tool (matrix, punch, holder) was modeled by shell elements and analyzed, assuming the terms of the rigid body. The gap between the matrix and punch asked the same as the thickness of the sheet, that is, of 1.6 mm. Introduced the coefficient of friction of 0.15 and established force holding the workpiece 600 kN.

On Fig, at position (a) shows the stress distribution in front of the elastic return of the workpiece, while in position (b) shows the stress distribution after the elastic return of the workpiece. On Fig in position (a) shows the voltage difference before and after the elastic return of the workpiece, while in position (b) shows the area selected on the basis of the difference voltage. On Fig shows the region R11, is selected by the voltage level at the 5%level.

The processor 14, the values of physical properties/quantitative values of the physical properties selects the area R11 voltage level at the 5%level, shown in figure 5, based on the stress distribution obtained by the analyzer 12 uprugoj the return, shown in Fig.

The processor 14, the values of physical properties/quantitative values of the physical properties performs the following processing on all integration points of the elements that belong to the scope selected in this way.

σx=0, σy=0, σz=0, τxy=0, τK=0, τzx=0

x=∈x0, ∈y=∈y0, ∈z=∈z0that γxyxy0that γKyz0that γzxzx0

Here stress components before processing in the integration points of the selected area were defined as (σx0, σy0, σz0τxy0τyz0τzx0), the components of the strain were determined as follows : (∈x0, ∈y0, ∈z0that γxy0that γyz0that γzx0), the stress components after processing was (σx, σy, σzτxyτKτzx) and the components of the deformation was (∈x, ∈y, ∈zthat γxythat γKthat γzx). The sheet thickness was set as the value before treatment, in the form as it is, while the modulus of elasticity and the modulus was set equal to the values entered in the software PAM-STAMP in the analysis of pressing, using them as they are. Processed value of stress and strain is taken as the output processing using the output file is.

For the analysis of elastic return used the above mentioned software PAM-STAMP. The output of the program execution processing, the values of physical properties/quantitative values of physical properties were introduced in software PAM-STAMP for the analysis of elastic return. For the analysis of elastic return of the used analysis of elasticity using the static implicit method. The value of elastic return set as the offset of the end point of the cross-section before and after the elastic return, i.e. the value of the elasticity of the flange.

On Fig shows for comparison the values of the elastic return in case of failure of processing and the values of the elastic return in the case of performing processing in accordance with a variant embodiment of the present invention. On this drawing you can see that the processing of the selected region R11 shown in Fig, reduced values of elastic return. The selected region R11 shown in Fig, can be identified as the location of the causes of the elastic return.

Example 9

On Fig shows the species that part of the cross-section in the form of hats, covered by the analysis of the elastic return in accordance with a variant embodiment of the present invention, which is at position (a) shows the perspective view, and in the position (b) shows a view in poper is cnom section of the same part. It consists of jumpers W0, side walls W1 and W2 and the flanges F1 and F2.

For the numerical analysis performed by the analyzer 11 forming with the press and the analyzer 12 of elastic return, used existing software PAM-STAMP of simulation analysis in the formation of coatings on the basis of the finite element method. For the analysis of elastic return of the used elastic analysis is performed using the static implicit method.

Used molding conditions presented data steel sheet of high strength, having, as properties, the metal plate, the sheet thickness of 1.6 mm and a tensile strength class 780 MPa. In addition, the shape of the tool (matrix, punch, holder) was modeled by shell elements and analyzed, assuming a rigid body. The gap between the matrix and the pressure was of the same magnitude as the thickness of the sheet, that is, of 1.6 mm. Introduced the coefficient of friction is 0.15, and the force holding the workpiece mounted 600 kN.

On Fig shows a view representing the position of the cross section and the angle of torsion of the part cross-section in the shape of a hat in accordance with a variant embodiment of the present invention, which is at position (a) shows the perspective view, and in the position (b) shows a view in cross section of the same part.

The obtained results were processed prog is amnim software post-processing to obtain coordinate values of points forming the cross section at positions a and b shown in Fig, and was determined angle θ formed by the bridges of cross-sections. "The value of the elastic return" here was defined as the angle θ.

On Fig shows a view representing the distribution of the number of indicators of the state after molding with a press of the first and second workpieces. The first blank is shown at position (a), represents the portion being formed by using a press obtained during the first molding conditions, while the second workpiece is shown at position (b), represents the portion being formed by using a press, received second molding conditions differing in at least one element from the first molding conditions. On Fig was added strip to change the shape as an element differing conditions of forming the second blank.

On Fig shows, representing the difference in the quantitative indicators of the state after molding with a press of the first and second workpieces. On Fig shows a view representing the selection of areas on the basis of the difference between quantitative indicators. As shown in Fig, the program processing, the values of physical properties/quantitative values of physical properties used to search for differences in voltage between the first and second blanks in all the blastah. As shown in Fig, the difference voltage at the level of 10% was used to define the selected area.

The program execution processing, the values of physical properties/quantitative values of physical properties, processing the values of the physical properties/quantitative values of physical properties, divided mentioned selected area as the area for processing and performed the following processing on all integration points of the elements belonging to each of the selected first region of the workpiece.

σx=0, σy=0, σz=0, τxy=0, τK=0, τzx=0

x=∈x0, ∈y=∈y0, ∈z=∈z0that γxyxy0that γKyz0that γzxzx0

Here stress components before processing in the integration points of the selected area were defined as (σx0, σy0, σz0τxy0τyz0τzx0), the components of the strain were determined as follows : (∈x0, ∈y0, ∈z0that γxy0that γyz0that γzx0), the stress components after processing was (σx, σy, σzτxyτKτzx) and the components of the deformation was (∈x, ∈y, ∈zthat γxythat γKthat γzx).

The sheet thickness was set as the value before treatment, in the form as it is, while mo is ul of elasticity and modulus asked as values entered into the software PAM-STAMP in the analysis of compaction used in the form as they are. Processed values of stress and strain is taken as the output processing using the output file.

As the analysis of elastic return used the above mentioned software PAM-STAMP. The output of the program execution processing, the values of physical properties/quantitative values of physical properties were introduced in software PAM-STAMP for the analysis of elastic return. For the analysis of elastic return of the used elastic analysis using the static implicit method.

The angle of torsion of the cross-section relative to the cross-section As shown in Fig, was specified as the value of elastic return. On Fig shows for comparison the values of the elastic return in case of failure of processing and the values of the elastic return in case processing. In this regard, it becomes clear that the processing of the selected area on Fig provides the opportunity to reduce the value of elastic return. The selected area shown in Fig, can be identified as the location of the causes of the elastic return.

Example 10

On Fig set types, representing the portion of the cross-section in the form of hats, covered analyze the elastic return in accordance with a variant embodiment of the present invention, which position (a) shows a view in perspective and in position (b) shows a view in cross section of the same part. It consisted of jumpers, the side walls 1 and 2 and the flanges 1 and 2. Used molding conditions were a data steel sheet of high strength, having, as properties of the metal plate, the thickness of the sheet of 1.6 mm and a tensile strength class 780 MPa. Numerical analysis was performed with the analyzer 11 molding using a press, using the method of finite elements in LS-DYNA, while the analysis of the elastic return means of the analyzer 12 of the elastic return was performed using the method of finite elements in LS-DYNA.

On Fig shows a view representing a table of data is replaced stripes and distribution voltage in accordance with a variant embodiment of the present invention. In this variant embodiment used three forms of distribution strips and voltage.

On Fig shows, representing the separation of the workpiece on the field in accordance with a variant embodiment of the present invention. As shown, to conform to the shapes shown in Fig, areas in which can be made of the form of distribution strips and voltage workpiece is divided into many areas in which these forms can be derived. In addition, the divided areas of the destinations which have position, such as n=1, 2, ..., n.

On Fig shows the layout of the form and voltage in all designated areas of the workpiece in accordance with a variant embodiment of the present invention. On Fig presents the types that define the position of the cross-section and the amount of winding in accordance with a variant embodiment of the present invention. Here is the number of torsion was defined as the value of elastic return. It should be noted that in the initial state, which was not replaced stripes or voltage, etc., the value of elastic return was the ceiling of 5.60 mm

On Fig shows the layout view of the strip and the area within the indicated area of the workpiece in accordance with a variant embodiment of the present invention. As in specific example 1, the case of the layout of the strip in the position shown in position n=1@1 (the number of the initial position) of the workpiece when the link voltage and case layouts, stripes and voltage were subjected to numerical analysis. Used form was form No. A12w3d shown in Fig (depth 3 mm). The value of elastic return amounted to 5.58 mm, 5,64 mm and 5,62 mm for replacement strips, replacement, voltage and replacement strips and voltage.

On Fig shows the layout view of the strip and the area within the designated area of the workpiece in accordance with a variant embodiment of this is subramania. As in specific example 2, case layout the strips in position, denoted by n=2@1 (the second position), were subjected to numerical analysis case placing voltage and a case of placing strips and voltage. The value of elastic return amounted to 5.57 mm, 5,64 mm and 5,62 mm for replacement strips, replacement, voltage and replacement strips and voltage. When the value of the elastic return does not satisfy the set value, etc. thus, it is also possible to consistently increase the number of positions to explore.

On Fig shows a layout view of a strip with the lowest value of elastic return, etc. in accordance with a variant embodiment of the present invention (a measure to reduce the first value of the elastic return). As a concrete example 3 were subjected to a numerical analysis of a case of placing the strips in position, denoted by n=best@1 on the workpiece, the case of the placement of stress and a case of placing strips and voltage. The value of elastic return was 5.22 mm, mm 4.26 deaths and a 4.03 mm for replacement strips, replacement, voltage and replacement strips and voltage. At the lowest value of elastic return, in the case of replacement in the same position, thus, the elastic return improved by 28%.

On Fig shows a view representing the layout of the second strips, etc. at the location of one of the strips with the lowest value is of elastic return, etc., in accordance with a variant embodiment of the present invention. As in specific example 3, was subjected to a numerical analysis of a case of placing the strips in positions denoted by n=1@2 and n=best@1 on the workpiece, the case of placing voltage, and a case of placing strips and voltage. The value of elastic return was 5.21 mm, 4,34 4,11 mm and mm for replacement strips, replacement, voltage and replacement strips and voltage. At the time of replacement, when placing the second strip in addition to the best example of the placement of a strip, so that the elastic return was improved by 27% (measure reduce the second value of the elastic return).

On Fig shows the placement of the second strip in the layout of a strip with the lowest value of elastic return, etc. in accordance with a variant embodiment of the present invention. As in specific example 5, were subjected to numerical analysis of a case of placing the strips in the positions shown (n=2@2 and n=best@1 on the workpiece, the case of placing voltage, and a case of placing strips and voltage. The value of the elastic return was $ 5,23 mm, 4,32 mm and 4.09 to mm for replacement strips, replacement, voltage and replacement strips and voltage. At the time of replacement, with the placement of the second strips, etc. in position number two, in addition to the best example layout of a strip and so on, thus, prohibetur was improved by 27%. When the value of the elastic return does not satisfy the allowable value, etc. thus, it is also possible to consistently increase the number of positions to explore.

On Fig shows the layout of the n strips, etc. in a specified area of the workpiece in accordance with a variant embodiment of the present invention. As a concrete example 6 layout replacement after position n=best@1, where the value of the elastic return becomes the least, when one strips etc., the second strips, etc. in position n=best@2, where the value of the elastic return becomes the smallest, has performed n times. The value of the elastic return was $ 3,22 mm 1,60 mm and a rate of 1.51 mm for replacement strips, replacement, voltage and replacement strips and voltage. At the time of replacement repeatedly executed the search for the optimal n times thus, with improved elastic return of 73%.

In addition, as a concrete example 7 was studied case replacement form No. A12w3d (depth 4 mm), different from Fig, n provisions specified in Fig. In this case, the value of the elastic return was $ 3,20 mm 1,54 mm and of 1.46 mm for replacement strips, replacement, voltage and replacement strips and voltage. At the time of replacement of multiple search optimal n times, thus, improved elastic return of 74%.

On Fig shows the layout view is takticheskih strips in the designated areas of the workpiece in accordance with a variant embodiment of the present invention. As a specific case 8 actual strips arranged in the positions shown in Fig, and subjected to numerical analysis. Even when actually placed large strips in places layout of small strips, as shown in Fig, the value of elastic return was 1.60 mm Elastic return was improved by 72%. Thus, even when the actual placement of the strips, based on the study of the provisions of the layout of the stripes explained above, the elastic return can be equivalent reduced.

Table 3 shows the results of the elastic return for the above cases 1-8.

Thus, the present invention allows not only to identify the position of the occurrence of elastic return, but can also calculate measures against him.

As shown in the examples above, the device for identifying the location of the occurrence of an elastic return in accordance with the present invention, when compared with use in practice in the past such devices for the study of elastic return, allows the use of numerical analysis to identify the locations of occurrence of elastic return. In addition, through a quantitative analysis of the degree of effect of the elastic return for the provision and display of information to ensure opportunities in sulinowo determination becomes possible to easily identify the location of the causes of the elastic return. In addition, the present invention can also provide a measure against the elastic return of the workpiece.

Thus, the device for identifying the location of the causes of the elastic return in accordance with the present invention, when compared with the past, when in practice used the device to study the elastic return, allows you to apply numerical analysis to identify the reasons for the location of the occurrence of elastic return, so that the amount of test work and expenses during the mechanical design molded element can be reduced. In addition, the device for identifying the position of a measure against the elastic return in accordance with the present invention, compared with the past, when used in practice, the device for the study of elastic return, allows the use of numerical analysis to identify the provisions of the measures against elastic return, so that the amount of test work and expenses during the mechanical design molded element can be greatly reduced.

In addition, such a device in accordance with the present invention, as can be expected, can be used for the entire range of workpieces, which will provide significant benefits in the industry.

Described above in the options embodiments are given only as typical examples. Combinations of elements, variations of the embodiments and their modifications, and variations will be clear to a person skilled in the art. To a person skilled in the art will be understood various modifications of the above-described embodiment variants without going beyond the principles of the invention and scope of the invention described in the claims.

1. The way to identify places that are causing the elastic return generated by the press elements, characterized in that it contains:
the analysis stage molding using a press, which consists in the numerical analysis of the conditions of the molding when the molding using a press to get the data forming portion being formed by using a press,
the step of processing comprising processing at least some of the data values of the physical properties and the quantitative values of physical properties for some of the areas mentioned part being formed by the press, among the data forming said part being formed with a press, and
the step of calculating values of elastic return, consisting in the calculation of the values of the elastic return on the basis of the results mentioned processing, and
the step of repeating the above-mentioned processing step and the step of calculating values of the elastic return when the change mentioned part of the areas to identify the field values of the physical is about the properties and the quantitative values of the physical properties where does the value of the elastic return becomes the smallest, or where the difference with the value of the elastic return when performing analysis of elastic return without performing the aforementioned processing becomes the greatest.

2. The method according to claim 1 in which the said value of the physical properties and the quantitative value of the physical properties are the sheet thickness, modulus of elasticity, modulus of plasticity, component values and voltage values of the component deformation.

3. The method according to claim 1 or 2, further containing the step of repeating the above-mentioned processing step and the step of calculating values of the elastic return when changing at least one of the mentioned values of the physical properties and the quantitative values of physical properties, and/or the processing to identify a region, the values of physical properties and quantities of physical properties, where the mentioned value of the elastic return becomes the smallest, or where the difference with the value of the elastic return when performing analysis of elastic return, without performing the aforementioned processing becomes the greatest.

4. The method according to claim 1 or 2, in which the said part areas represents many areas, and these areas are treated at the same time.

5. The method according to claim 1 or 2, in which said step of processing the and share the part on the field, where does the value of the elastic return becomes the smallest, and perform processing for these divided regions, at least one of the mentioned values of the physical properties and the quantitative values of the physical properties, as long as the size of the split regions becomes equal to the preset value or less.

6. The method according to claim 1 or 2, in which the said part areas represents one or more elements or blocks calculation module.

7. The method according to claim 1 or 2, in which the said part areas represents one or more integration points.

8. Device for identification of place, which is causing the elastic return generated by the press elements containing the analyzer molding using a press for numerical analysis of the conditions of the molding when the molding using a press to get the data forming portion being formed by using a press,
the analyzer elastic return for the numerical analysis of such data forming, to calculate the values of elastic return, and
a processor for processing at least some of the data values of the physical properties and the quantitative values of the physical properties of parts of the areas mentioned part being formed by the press, among the data forming said part being formed with what omashu press, and ensure the calculation mentioned analyzer elastic return values of elastic return, based on the results of the above processing, in which the said processor repeatedly calculates the results mentioned processing and the values of the elastic return when the change mentioned part areas, to identify a region, the values of physical properties and quantities of physical properties, where the mentioned value of the elastic return becomes the smallest, or where the difference with the value of the elastic return when performing elastic return without performing the aforementioned processing becomes the greatest.

9. The device according to claim 8 in which the said value of the physical properties and the quantitative value of the physical properties are the sheet thickness, modulus of elasticity, modulus of plasticity, the value of the component voltage and the value of the component of the strain.

10. The device according to claim 8 or 9, in which the said processor repeatedly calculates the results mentioned processing and the values of the elastic return when you change the mentioned values of the physical properties and the quantitative values of physical properties, and/or the processing to identify a region, the values of physical properties and quantities of physical properties, where the mentioned value uprugoj the return becomes the smallest, or where the difference with the value of the elastic return when performing analysis of elastic return without performing the aforementioned processing becomes the greatest.

11. The device according to claim 8 or 9, in which the said part areas represents many areas, and these areas are treated at the same time.

12. The device according to claim 8 or 9, in which the said processor divides the part of the area where the above-mentioned value of the elastic return becomes the smallest, and processes mentioned the split pane for at least one of the mentioned values of the physical properties and the quantitative values of the physical properties, as long as the size of the split regions becomes equal to the preset value or less.

13. The recording media readable by a computer containing a program for identification of place, which is causing the elastic return generated by the press elements, characterized in that it ensures the execution of the computer
analysis procedures molding using a press for numerical analysis of the conditions of the molding when the molding using a press to get the data forming portion being formed by using a press,
handling procedure for processing at least some of the data values of the physical properties and the quantitative values of the physical t the VA part of the areas mentioned parts, being formed by the press, among the data forming said part being formed with a press, and
calculation procedure the values of the elastic return to calculate the values of the elastic return on the basis of the results mentioned processing,
in which the program has a procedure in place, repeating the above procedure and the procedure for calculating the values of the elastic return when the change mentioned part of the areas, therefore, to identify the region, the importance of physical properties and the quantitative value of the physical property where the above-mentioned value of the elastic return becomes the smallest, or where the difference with the value of the elastic return when performing analysis of elastic return without performing the aforementioned processing becomes the greatest.

14. Media in item 13, in which the said value of the physical properties and the quantitative value of the physical properties are the sheet thickness, modulus of elasticity, modulus of plasticity, the value of the component voltage and the value of the component of the strain.

15. The media according to item 13 or 14, in which the program has a procedure in place, repeating the above procedure and the procedure for calculating the values of elastic return, when changing at least one of the mentioned values of the physical properties and quantitative sacrifising properties, and the above-mentioned processing to identify a region, the values of the physical properties and the quantitative values of the physical properties when the said value of the elastic return becomes the lowest, or when the difference between the value of the elastic return when performing analysis of elastic return without performing the aforementioned processing becomes the greatest.

16. The media according to item 13 or 14, in which the said part areas represents many areas, and these areas are treated at the same time.

17. The media according to item 13 or 14, in which the above-mentioned processing procedure is a procedure that separates the part of the area where the above-mentioned value of the elastic return becomes the smallest, and processes mentioned the split pane for at least one of the mentioned values of the physical properties and the quantitative values of the physical properties, as long as the size of the split regions becomes equal to the preset value or less.

18. The recording media readable by a computer containing a program for identification of place, which is causing the elastic return generated by the press elements, allowing you to enter and display data with a numerical analysis program, and this program numerical analysis performs numerical analysis of the conditions is the second molding when molding using a press, to calculate the data of the molding when the molding using a press and values of elastic return, characterized in that the said program to identify the location of the causes of the elastic return provides execution of the computer
procedures for obtaining such data forming of the above-mentioned numerical analysis,
procedures for processing at least some of the data values of the physical properties and the quantitative values of the physical properties of parts of the areas mentioned part being formed by the press, among the data forming said part being formed with a press, and
procedure for displaying the results of the above-mentioned processing in the above-mentioned program of numerical analysis and calculation procedure mentioned values of elastic return,
in which the program has a procedure of repeating the above procedure and the above-mentioned calculation procedure the values of the elastic return when the change mentioned parts for identification region, the values of physical properties and quantities of physical properties, where the mentioned value of the elastic return becomes the smallest, or where the difference with the value of the elastic return when performing analysis of elastic return without performing the aforementioned processing becomes the greatest.

19. Wear the spruce on p, in which the program has a procedure of repeating the above procedure and the above-mentioned calculation procedure the values of the elastic return when changing at least one of the mentioned values of the physical properties and the quantitative values of physical properties, and the above-mentioned processing is thus to identify the scope, procedure, values of the physical properties and the quantitative values of the physical properties, where the mentioned value of the elastic return becomes the smallest, or where the difference with the value of the elastic return when performing analysis of elastic return without performing the aforementioned processing becomes the greatest.

20. The way to identify places that are causing the elastic return generated by the press elements, characterized in that it contains:
the analysis stage molding using a press, comprising in the numerical analysis of the conditions of the molding when the molding using a press, to obtain data forming portion being formed by using a press,
the processing stage consisting in the calculation of curvature and/or angle for the mentioned part being formed by using a press, in data forming said part being formed by using a press, the separation of the product to be cast on the field on the basis of the curvature and/or angle, and processing at least one of the values of physical properties and quantities of physical properties in terms of areas among the divided areas, certain processing on the basis of such data forming, and
the step of calculating values of elastic return, consisting in the calculation of the values of the elastic return on the basis of the results mentioned processing, and the step of repeating the above-mentioned processing step and the step of calculating values of the elastic return when the change mentioned part of the areas, therefore, to identify the region, the importance of physical properties and the quantitative value of the physical property where the above-mentioned value of the elastic return becomes the smallest.

21. The method according to claim 20, in which said processing step processes at least one of these variable values of the physical properties/quantitative values of the physical properties of at least one of the integration points mentioned divided region where the above-mentioned curvature and/or angle is relatively large.

22. The method according to claim 20 or 21, in which the said value of the physical properties and the quantitative value of the physical properties are the sheet thickness, modulus of elasticity, modulus of plasticity, the value of the component voltage and the value of the component of the strain.

23. The method according to claim 20 or 21, which includes a step of repeating the above-mentioned processing step and the step of calculating values of the elastic return when the change mentioned, hence, is her least one of the values of the physical properties and the quantitative values of the physical properties and/or the processing to identify a region, the values of physical properties and quantities of physical properties, where the mentioned value of the elastic return becomes the smallest.

24. Device for identification of place, which is causing the elastic return generated by the press elements, characterized in that it contains:
the analyzer molding using a press that performs numerical analysis of the conditions of the molding when the molding using a press, to obtain data forming portion being formed by using a press,
a processor that calculates the curvature and/or angle for the mentioned part being formed by using a press, when forming the data mentioned part being formed by using a press, separating the molded product on the field on the basis of the curvature and/or angle and machining at least one of the variable values of the physical properties and the quantitative values of the physical properties in terms of areas among the divided areas identified for treatment on the basis of such data forming, and
the analyzer elastic return which computes the value of the elastic return on the basis of the results mentioned processing, in which the mentioned process is the PR and the above-mentioned analyzer elastic return repeatedly calculate the results of the above-mentioned processing and the values of the elastic return when the change mentioned part of the areas thus said processor identifies this region, the value of the physical properties and the quantitative value of the physical property where the above-mentioned value of the elastic return becomes the least

25. The device according to paragraph 24, in which the value of the physical properties and the quantitative value of the physical properties mentioned in the divided region where the above-mentioned curvature and/or angle are relatively large, are referred to the importance of the physical properties and the quantitative value of the physical property of at least one point of integration is divided region where the above-mentioned curvature and/or angle is relatively large.

26. The device according to paragraph 24 or 25, in which the said value of the physical properties and the quantitative value of the physical properties are the sheet thickness, modulus of elasticity, modulus of plasticity, the value of the component voltage and the value of the component of the strain.

27. The device according to paragraph 24 or 25, in which the said processor and said analyzer elastic return repeatedly calculate the results of the above-mentioned processing and the values of elastic return, when changing at least one of the mentioned values of the physical properties and the quantitative values of physical properties, and/or the processing so that the above process is the PRS identifies the mentioned region, the value of the physical properties and the quantitative value of the physical property where the above-mentioned value of the elastic return becomes the smallest.

28. The recording media readable by a computer containing a program for identification of place, which is causing the elastic return generated by the press elements, characterized in that the program provides execution of the computer
analysis procedures molding using a press for numerical analysis of the conditions of the molding when the molding using a press to get the data forming portion being formed by using a press,
the procedure for calculation of curvature and/or fragile for the mentioned part being formed by using a press, in data forming said part being formed by the press, separation of the product to be cast in the field, on the basis of the curvature and/or angle, and processing at least one of the values of the physical properties and the quantitative values of the physical properties in terms of areas among the divided areas identified for processing, on the basis of such data forming, and
the procedure to calculate the values of the elastic return on the basis of the results mentioned processing procedure of calculating the values of elastic return, and
the procedure is repeated calculation results mentioned about the processing and the values of the elastic return when the change mentioned part of the areas thus said processor identifies this region, the value of the physical properties and the quantitative value of the physical property where the above-mentioned value of the elastic return becomes the smallest.

29. Media in p, in which the aforementioned processing procedure handles at least one of these variable values of the physical properties and the quantitative values of the physical properties of at least one of the integration points mentioned divided region where the above-mentioned curvature and/or angle is relatively large.

30. The recording media readable by a computer containing a program for identification of place, which is causing the elastic return generated by the press elements, allowing you to enter and display data with the program of numerical analysis, the numerical analysis program performs numerical analysis of the conditions of the molding when the molding using a press, for calculating data of the molding when the molding using a press and values of elastic return, characterized in that
referred to the program to identify the causes of the elastic return provides execution of the computer
procedures for obtaining such data forming of the above-mentioned numerical analysis,
procedures for calculating krivizny/or angle to said part, being formed by using a press, in data forming said part being formed by the press, separation of the product to be cast on the field on the basis of the curvature and/or angle, and processing at least one of the values of the physical properties and the quantitative values of the physical properties in terms of areas among the divided areas identified for processing, on the basis of such data forming, and
procedure for displaying the results of the above-mentioned processing in the above-mentioned program of numerical analysis and calculation of the above-mentioned values of elastic return, and
the procedure is repeated calculation results of the above-mentioned processing and the values of the elastic return when the change mentioned part of the areas so that the processor identifies the mentioned region, the value of the physical properties and the quantitative value of the physical property where the above-mentioned value of the elastic return becomes the smallest.

31. The media item 30, in which the aforementioned processing procedure processes the at least one variable of the mentioned variables, the values of physical properties and the quantitative values of the physical properties of integration points mentioned divided region where the above-mentioned curvature and/or angle is relatively large.

32. How to display the degree of influence uprugoj the return, characterized in that it contains:
the analysis stage molding using a press that performs numerical analysis of the conditions of the molding when the molding using a press to get the data forming portion being formed by using a press,
the step of processing comprising processing at least some of the data values of the physical properties and the quantitative values of the physical properties of each region, separating the said part being formed by using a press, in data forming said part being formed by using a press,
the step of calculating values of elastic return, consisting in the calculation of the values of the elastic return on the basis of the results mentioned processing, and
the step of displaying comprising displaying the aforementioned calculated values of the elastic return for each of the mentioned region,
in which said step of displaying displays the value mentioned calculated values of elastic return, divided by the area of each of the mentioned regions for each referred to the area.

33. The method according to p, in which the said processing step processes at least some of the data values of the physical properties and the quantitative values of the physical properties part of the integration points of each area, separating the said part being formed by using a press, the molding cited is the RTS part, being formed by using a press.

34. The method according to p or 33, in which said step of displaying displays in the form of contour diagrams mentioned calculated value of the elastic return for each of the mentioned areas.

35. The method according to p or 33, in which the said value of the physical properties and the quantitative value of the physical properties are the sheet thickness, modulus of elasticity, modulus of plasticity, the value of the component voltage and the value of the component of the strain.

36. The method according to p or 33, in which said step of displaying displays the values mentioned calculated values of the elastic return divided by one of the representative length of the representative width, representative, height representative of the thickness and tensile strength mentioned part being formed by using a press, for each mentioned area.

37. The method according to p or 33, in which said step of displaying displays the values mentioned calculated values of elastic return, divided by the speed of the punch or force holding the workpiece for each of the mentioned areas.

38. Device for displaying the degree of influence of elastic return, characterized in that it has:
the analyzer molding using a press that performs numerical analysis of the conditions of forming at formularies through the press, to obtain data forming portion being formed by using a press,
the analyzer elastic return, perform the numerical analysis of such data forming, to calculate the values of elastic return, processor, processing at least some of the data values of the physical properties and the quantitative values of physical properties for each region, separating the said part being formed by using a press, in data forming said part being formed with a press, and providing the calculation mentioned analyzer elastic return values of elastic return, based on the results of the above-mentioned processing, and
a display module that displays the aforementioned calculated value of the elastic return for each of the mentioned areas, in which the said display module displays in the form of contour diagrams mentioned calculated value of the elastic return for each of the mentioned areas.

39. The device according to § 38, in which the said processor processes at least one of the data values of the physical properties and the quantitative values of the physical properties part of the integration points of each area, separating the said part being formed by using a press, in data forming said part being formed by using a press.

40. The device according to § 38 or 39, in which the mentioned value of the physical properties and the quantitative value of the physical properties represent the thickness of the sheet, the modulus of elasticity, modulus of plasticity, the value of the component voltage and the value of the component of the strain.

41. The device according to § 38 or 39, in which the said display module displays the value mentioned calculated values of elastic return, divided by the area of each of the mentioned areas in the above-mentioned display module for each of the mentioned areas.

42. The device according to § 38 or 39, in which the said display module displays the value mentioned calculated values of the elastic return divided by one of the representative length of the representative width, representative, height representative of the thickness and tensile strength mentioned part being formed by using a press, in the above-mentioned display module for each of the mentioned areas.

43. The device according to § 38 or 39, in which the said display module displays the value mentioned calculated values of elastic return, divided by the speed of the press or force holding the workpiece in the above-mentioned display module for each of the mentioned areas.

44. The recording media readable by a computer containing a program for displaying the degree of influence of elastic return, characterized in that it ensures the execution of the computer
analysis procedures molding using a press for the numerical analysis of the conditions of formovani is the molded using a press to get the data forming part of, being formed by using a press,
handling procedure for processing at least some of the data values of the physical properties and the quantitative values of the physical properties of each region, separating the said part being formed by using a press, when forming the data mentioned part being formed by using a press,
calculation procedure the values of elastic return, to calculate the values of the elastic return on the basis of the results mentioned processing, and
procedure display for displaying the aforementioned calculated values of the elastic return in the module display for each of the mentioned region,
in which the mentioned procedure display displays in the form of contour diagrams mentioned calculated values of the elastic return to display the degree of influence each of the above mentioned fields.

45. The media item 44, in which the aforementioned processing procedure handles at least some of the data values of the physical properties and the quantitative values of the physical properties part of the integration points of each area, separating the said part being formed by using a press, when forming the data mentioned part being formed by using a press.

46. The media item 44 or 45, in which the mentioned procedure display is a procedure to display the calculated values mentioned the CSO values of elastic return, divided by the area of each of the mentioned areas for each of the above mentioned fields.

47. The media item 44 or 45, in which the mentioned procedure display is a procedure to display the value mentioned calculated values of the elastic return divided by one of the representative length of the representative width, representative, height representative of the thickness and tensile strength mentioned part being formed by using a press, for each mentioned area.

48. The media item 44 or 45, in which the mentioned procedure display is a procedure to display the value mentioned calculated values of elastic return, divided by the speed of the punch or force holding the workpiece for each of the above mentioned fields.

49. The recording media readable by a computer containing a program for displaying the degree of influence of elastic return, allowing you to enter and display data using analysis software molding using a press that performs numerical analysis of the conditions of the molding when the molding using a press to calculate the data forming portion being formed by using a press, program, analysis of elastic return, perform the numerical analysis of such data forming, to calculate the values of elastic return, and the program will follow the it processing, displays in the form of contour diagrams referred to the value of elastic return, characterized in that
the above program to display the causes of the elastic return provides execution of the computer
procedures for obtaining such data forming of the above-mentioned program analysis molding using a press,
handling procedure for processing at least some of the data values of the physical properties and the quantitative values of the physical properties of each region, separating the said part being formed by using a press, in the above-mentioned data forming,
procedure for displaying the results of the above-mentioned processing in the above-mentioned program analysis of elastic return and
procedure display circuit for providing display using the above-mentioned program further processing of contour diagrams mentioned values of elastic return, calculated using the above-mentioned program analysis of elastic return for each area.

50. Media in § 49, in which the aforementioned processing procedure handles at least some of the data values of the physical properties and the quantitative values of the physical properties part of the integration points of each area, separating the said part being formed by using a press, in the data forming the mentioned parts, the form is my using a press.

51. The way to identify places that are causing the elastic return to being formed by the press elements, characterized in that it has:
the analysis stage molding using a press, which consists in performing a numerical analysis of the conditions of the molding when the molding using a press, to obtain data forming portion being formed by using a press,
the step of calculating the first value of elastic return, consisting in calculating the data values of the physical properties and the quantitative values of physical properties for many areas after the elastic refund based on the data forming said part being formed by using a press,
the step of processing comprising processing at least some of the data values of the physical properties and the quantitative values of the physical properties of the field, when there is a region where at least one of the mentioned values of the physical properties and the quantitative values of the physical property is greater than the preset value, and
the step of calculating a second value of elastic return, consisting in calculating the data values of the physical properties and the quantitative values of physical properties for each of the many areas after the elastic return, on the basis of the above-mentioned processing,
in which said processing step process, ENISA least one of the data values of the physical properties and the quantitative values of the physical properties of the field, when there is a region where a difference of at least some of the data values of the physical properties and the quantitative values of the physical properties of the part being formed by the press, before and after the elastic return is greater than the specified value.

52. The method according to § 51, in which the said value of the physical properties and the quantitative value of the physical properties are the sheet thickness, modulus of elasticity, modulus of plasticity, the value of the component voltage and the value of the component of the strain.

53. Device for identification of place, which cause elastic return to being formed by the press elements, characterized in that it has:
the analyzer molding using a press that performs numerical analysis of the conditions of the molding when the molding using a press, to obtain data forming portion being formed by using a press,
the analyzer elastic return, perform the numerical analysis of such data forming to calculate the values of elastic return, and
a processor that performs processing for processing at least some of the data values of the physical properties and the quantitative values of the physical properties of the above mentioned fields, when, at the ore, one of the mentioned values of the physical properties and the quantitative values of the physical property is greater than the preset value, and ensure the implementation of the said analyzer elastic return calculate the values of the elastic return for each of the many areas after the elastic return, on the basis of the above-mentioned processing,
in which the said processor processes at least one of the data values of the physical properties and the quantitative values of the physical properties of the field, when there is a region where a difference of at least some of the data values of the physical properties and the quantitative values of the physical properties of the part being formed by the press, before and after the elastic return is greater than the specified value.

54. The device according to item 53, in which the said value of the physical properties and the quantitative value of the physical property represents the sheet thickness, modulus of elasticity, modulus of plasticity, the value of the component voltage and the value of the component of the strain.

55. The recording media readable by a computer containing a program for identification of place, which cause elastic return to being formed by the press elements, characterized in that it ensures the execution of the computer
analysis procedures at formovani is using the press to perform numerical analysis of the conditions of the molding when the molding using a press, to obtain data forming portion being formed by using a press,
the first procedure of calculating the values of the elastic return to calculate the data values of the physical properties and the quantitative values of physical properties for each of the many areas after the elastic refund based on the data forming said part being formed by using a press,
handling procedure for processing at least some of the data values of the physical properties and the quantitative values of the physical properties of the field, when there is a region where at least one of the mentioned values of the physical properties and the quantitative values of the physical property is greater than the preset value, and
the second procedure of calculating the values of the elastic return to calculate the data values of the physical properties and the quantitative values of physical properties for each of the many areas after the elastic return, on the basis of the above-mentioned processing,
in which mentioned processing procedure performs processing at least some of the data values of the physical properties and the quantitative values of the physical properties of the field, when there is a region where a difference of at least some of the data values of the physical properties and the quantitative values of the physical properties of the part being formed with POM is using the press, before and after the elastic return is greater than the specified value.

56. The recording media readable by a computer containing a program for identification of place, which cause elastic return to being formed by the press elements, allowing you to enter and display data analysis program molding using a press that performs numerical analysis of the conditions of molding, the molded using a press, to calculate the data forming portion being formed by using a press, and data values of the physical properties and the quantitative values of physical properties for each of the many areas and programs analysis of elastic return, perform the numerical analysis of such data forming the data values of the physical properties and the quantitative values of physical properties for each of the many areas, to calculate the values of the elastic return and data values of the physical properties, and quantitative values of physical properties for each of the many areas after the elastic return, characterized in that the said program to identify the location of the causes of the elastic return provides execution of the computer
procedures for obtaining data values of the physical properties and the quantitative values of physical properties for each of the many is esta areas after the elastic return of the above-mentioned program analysis of elastic return,
handling procedure for processing at least some of the data values of the physical properties and the quantitative values of the physical properties of the field, when there is a region where at least one of the mentioned values of the physical properties and the quantitative values of the physical property is greater than the preset value, and
procedure for displaying the results of the above-mentioned processing in the above-mentioned program analysis of elastic return,
in which the program additionally has a procedure for obtaining data values of the physical properties and the quantitative values of physical properties for each of the many areas before mentioned elastic return of the mentioned analysis software molding using a press,
the above procedure performs processing at least some of the data values of the physical properties and the quantitative values of the physical properties of the field, when there is a region where a difference of at least some of the data values of the physical properties and the quantitative values of the physical properties mentioned part being formed by the press, before and after the elastic return is greater than the specified value.

57. Media in p, which referred to the importance of the physical properties and the quantitative value of the physical properties are is the thickness of the sheet, the modulus of elasticity, modulus of plasticity, the value of the component voltage and the value of the component of the strain.

58. The way to identify places that are causing the elastic return to being formed by the press elements having: a first analysis stage molding using a press, which consists in performing a numerical analysis of the first molding conditions for the calculation of the first data forming,
the second stage of the analysis molding using a press, which consists in performing a numerical analysis of the second molding conditions differing in at least one of the first mentioned molding conditions, to calculate the second data forming,
the stage of processing at least some of the data values of the physical properties and the quantitative values of the physical properties mentioned first data forming region, when there is a region where a difference of at least some of the data values of the physical properties and the quantitative values of the physical properties in the data values of the physical properties and the quantitative values of physical properties for each of the many areas mentioned first and second data forming more than the set value, and
the step of calculating values of elastic return, consisting in the calculation of the values of elastic return, based on the results of the above processing, to the torus mentioned conditions forming represent the shape and properties of the steel sheet, the shape of the tool and the molding conditions.

59. The method according to § 58, in which the said value of the physical properties and the quantitative value of the physical properties are the sheet thickness, modulus of elasticity, modulus of plasticity, the value of the component voltage and the value of the component of the strain.

60. Device for identification of place, which cause elastic return to being formed by the press elements, characterized in that it has:
the analyzer molding using a press that performs numerical analysis of the first molding conditions for the calculation of the first data forming, and numerical analysis of the second molding conditions differing in at least one of the first mentioned molding conditions for calculating the second data forming,
the analyzer elastic return, perform the numerical analysis of such data forming, to calculate the values of elastic return, and
a processor that processes at least one of the values of the physical properties and the quantitative values of the physical properties mentioned first data forming in the field, when there is a region where a difference of at least one of the data values of the physical properties and the quantitative values of the physical properties in the data values of the physical properties and the quantitative value of the physical property for each of the multiple areas mentioned first and second data forming more than the preset value, and ensure the implementation of the said analyzer elastic return calculate the values of the elastic return on the basis of the results mentioned processing, in which the above-mentioned molding conditions are the form and properties of the steel sheet, the shape of the tool and pressing conditions.

61. The device according to p, which referred to the importance of the physical properties and the quantitative value of the physical properties are the sheet thickness, modulus of elasticity, modulus of plasticity, the value of the component voltage and the value of the component of the strain.

62. The recording media readable by a computer containing a program for identification of place, which cause elastic return to being formed by the press elements, ensure the implementation of the computer
the first analysis procedures molding using a press for the numerical analysis of the first molding conditions for the calculation of the first data forming,
the second analysis procedures molding using a press for numerical analysis of the second molding conditions differing in at least one of the mentioned first forming conditions to calculate the second data forming,
procedures for processing at least one of the values of the physical properties and the quantitative values of the physical its the STV mentioned first data forming region, when there is a region where a difference of at least some of the data values of the physical properties and the quantitative values of the physical properties in the data values of the physical properties and the quantitative values of physical properties for each of the many areas mentioned first and second data forming more than the set value, and
calculation procedure the values of the elastic return to calculate the values of the elastic return on the basis of the results mentioned processing,
in which the above-mentioned molding conditions are the form and properties of the steel sheet, the shape of the tool and pressing conditions.

63. The recording media readable by a computer containing a program for identification of place, which cause elastic return to being formed by the press elements, allowing you to enter and display data analysis program molding using a press that performs numerical analysis of the conditions of the molding when the molding using a press to calculate the data forming portion being formed by using a press, and data values of the physical properties and the quantitative values of physical properties for each of the multiple regions, and numerical analysis, performing the numerical analysis of such data forming the data values of the physical properties of the number and the quality values of the physical properties for each of the many regions and calculate the values of the elastic return and data values of the physical properties and the quantitative values of physical properties for each of the multiple areas after elastic return,
referred to the program to identify the location of the causes of elastic return, ensure the implementation of the computer
procedures for obtaining first data forming of the above-mentioned program analysis molding using a press,
procedures for performing numerical analysis of the second molding conditions differing in at least one of the first mentioned molding conditions and the second data forming upon receipt of the above analysis software molding using a press,
procedures for processing at least one of the values of the physical properties and the quantitative values of the physical properties mentioned first data forming region, when there is a region where a difference of at least some of the data values of the physical properties and the quantitative values of the physical properties in the data values of the physical properties and the quantitative values of physical properties for each of the many areas mentioned first and second data forming more than the set value, and
procedure for displaying the results of the above-mentioned processing in the above-mentioned program analysis of elastic return,
in which the above-mentioned molding conditions are the form and properties of the steel sheet, the form of tools and services is via pressing.

64. Media in p, which referred to the importance of the physical properties and the quantitative value of the physical properties are the sheet thickness, modulus of elasticity, modulus of plasticity, the value of the component voltage and the value of the component of the strain.

65. The way to identify places that are causing the elastic return to being formed by the press elements, characterized in that it has:
the analysis stage molding using a press, which consists in performing a numerical analysis of the conditions of the molding part being formed by using a press to calculate the data forming portion being formed by using a press,
the step of generating data of the molding replacement, comprising selecting at least part of the region, being formed by using a press, the molded part being formed by using a press, and data calculation molding replacement that replaces at least one of the forms mentioned selected area and stress distribution of that selected region data set, and
the step of calculating values of elastic return, consisting in performing numerical analysis of such data forming replacement for the calculation of elastic return, and
the definition stage is whether the value of the elastic return the specified value or less
which repeats the above-mentioned phase generirovana the data molding replacement and the above-mentioned step of calculating values of the elastic return by changing the position or quantity mentioned selected areas.

66. The method according to p, in which the said step of generating data of the molding replacement replaces at least one of the form of one or more fields that specify values of the elastic return is equal to the given value or less, and the voltage distribution of that selected region, and in which the method repeats the above-mentioned step of generating data of the molding replacement and the above-mentioned step of calculating values of the elastic return by changing the position or quantity mentioned selected areas.

67. The method according to p, in which
the method further has the step of separating the data forming said part being formed with a press on the specified region, and with said phase data calculation molding replacement counting said data forming replacement for all areas, divided into the aforementioned specified field.

68. The method according to p, in which the mentioned set of data is different, at least one of the shape and stress distribution for each referred to the selected area.

69. Device for identification of place, which cause elastic return to being formed by the press elements, characterized in that it has:
the analyzer Faure is Finance with the help of a press, performing a numerical analysis of the conditions forming part being formed by using a press to calculate the data forming portion being formed by using a press,
the data generator molding replacement that selects at least part of the areas of the part being formed by using a press, the molded part being formed by using a press, and calculates the data of the molding replacement that replaces at least one of the forms of this selected area and stress distribution of that selected region data set, and
the analyzer elastic return, perform the numerical analysis of such data forming replacement for the calculation of elastic return,
in which the said data generator molding replacement calculates said data forming replacement, and the above-mentioned analyzer elastic return repeatedly calculates the values of elastic return, when changing the position and number referred to selected areas, and the above-mentioned data generator molding replacement determines whether the mentioned value of the elastic return equal to the preset value or less.

70. The device according to p, in which the said generator molding replacement replaces at least one of the form of one or more fields that specify values of the elastic return equal to the specified value or less, and distributed the e stress this selected area, replaced by the given data, and in which the said data generator molding replacement calculates said data forming replacement, and the above-mentioned analyzer elastic return repeatedly calculates the values of the elastic return by changing the position or quantity mentioned selected areas.

71. The device according to p, in which the said data generator molding parts replacement data forming said part being formed with a press-defined fields, and generates said data forming replacement for all areas, divided into the aforementioned specified field.

72. The device according to p, in which the mentioned set of data is different, at least one of the shape and stress distribution for each referred to the selected area.

73. The recording media readable by a computer containing a program for identification of place, which cause elastic return to being formed using a press for performing a computer:
analysis procedures molding using a press to perform numerical analysis of the conditions of the molding part being formed by using a press to calculate the data forming portion being formed by using a press,
procedures data generation molding replacement designed to select at least part of the areas of the part, being formed by using a press, the molded part being formed by using a press, and data calculation molding replacement that replaces at least one of the forms of this selected area and stress distribution of that selected region data set, and
calculation procedure the values of the elastic return for the numerical analysis of such data forming replacement for the calculation of elastic return, and
procedures for determining which mentions the value of the elastic return is a specified value or less
in which the program repeats the above procedure to generate the data forming the replacement and the procedure for calculating the values of the elastic return by changing the position and number referred to selected areas.

74. Media in p, in which the mentioned procedure of data generation molding replacement replaces at least one of the form of one or more fields that specify the value of elastic return, equal to the given value or less, and the voltage distribution of that selected region given replaced by the data, and in which the program repeats the above procedure to generate the data of the formation of replacement, and the procedure for calculating the values of the elastic return by changing the position or quantity mentioned selected areas.

75. Media in p, in which
the program additionally has a procedure of dividing the data forming said part being formed with a press on the specified region, and
the mentioned procedure of data generation molding replacement generates said data forming replacements for all of the areas separated by the aforementioned predetermined areas.

76. Media in p, in which the mentioned set of data is different, at least one of the shape and stress distribution for each referred to the selected area.

77. The recording media readable by a computer containing a program for identification of place, which cause elastic return to being formed by the press elements, allowing you to enter and display data analysis program molding using a press that performs numerical analysis of the conditions of the molding when the molding using a press, to calculate the data forming portion being formed by using a press, and program analysis of elastic return, perform the numerical analysis of such data forming, to calculate the values of elastic return, characterized in that the said program to identify the position of a measure against the elastic return provides execution of a computer:
procedures for obtaining data forming of the above-mentioned program anal is for molding using a press,
procedures for generating data of forming replacement designed to select at least part of the areas of the part being formed by using a press, the molded part being formed by using a press, and data calculation molding replacement that replaces at least one of the shape of the selected area and stress distribution of that selected region data set, and
procedure for conclusion of such data forming replace in the above-mentioned program analysis of elastic return, and
procedures for determining which mentions the value of the elastic return is a preset value or less.



 

Same patents:

FIELD: metallurgy.

SUBSTANCE: invention refers to metal forming operations and can be implemented at various branches of industry (machine building, ship building etc) at fabrication of box and tube-like items out of sheet metal and tubes. The procedure consists in bending sheet work-piece per several passes. Lengthwise edges are alternately bent at the first pass. During the second pass the work-piece is bent from each bent lengthwise edge to the middle of the work-piece. Simultaneously there are formed specified curvature and lugs in lengthwise direction. Further, the middle part of the work piece is bent in cross direction. During successive passes lugs from one side of the work-piece to its middle are bent from edges made at the first pass. The same is made from the other end to the middle of the work-piece with increase of applied load to a maximal in the middle part of the work-piece. The punch consists of interacting upper and lower deforming units in form of a puncheon and matrix. Working surfaces of the puncheon and matrix correspond to cross and lengthwise section of item by shape. The puncheon and the matrix are made with lugs corresponding to lugs on items and with recesses. The recesses are located between the lugs and do not contact the item.

EFFECT: reduced labour input at shaping work-pieces of big thickness and reduced consumption of material.

7 cl, 1 ex, 3 dwg

Protective system // 2372552

FIELD: mechanical engineering.

SUBSTANCE: protective system is implemented in the form of labour body, transferred by known path. System contains light-emitting facility, installed from one side of travelling part with ability of lighting of area nearby part of path, light detector, installed from the opposite side of travelling part with ability of receiving from light-emitting facility of light, passed through lighted area, and processing and control means. Processing and control means are implemented with ability of receiving of information from light detectors, and so recognition of presence at least one shadowy section, located in limits of lighted area and received by means of offset shadow to light detectors obstacles, located in lighted area. Processing and control means are implemented with ability of control of travelling part depending on specified information. Lighted area is lighted so that processing and control means allows information, enough for definition of shadowy section, or each shadowy section.

EFFECT: effectiveness increase of operation, ensured by restriction of dangerous area nearby the motion path of labour body.

50 cl, 10 dwg

Forming machine // 2349404

FIELD: metallurgy.

SUBSTANCE: invention concerns metal deformation process field. Particularly it concerns forming machines and can be used while manufacturing of polyhedral products of closed form. Forming machine contains bed, cross bar, installed with ability of rotation and displacement on columns, drive, implemented in the form of cylinder, rod of which is connected with two levers, each of which is connected by means of link with column, puncheon, matrix, carriage with rollers, located parallel to cross bar with ability of displacement. Puncheon is implemented with rectangular cross-section, is pivotally installed with ability of rotation relative to work surface of bed and outfitted from both sides by axis interlocked to additional drivers.

EFFECT: improvement of large-size products and accuracy of bending angle is provided .

4 dwg

FIELD: metallurgy.

SUBSTANCE: tool holder is designed for bending tool having two surfaces of fixture and receiving groove with upper rim. A clamping case with the first clamping surface is designed for interaction with one of the surfaces of the tool fixture. A clamping strap serves for pressing the tool and is installed to perform pivot turning; this strap is equipped with the second clamping surface. The strap can be in the first position corresponding to clamping of the tool, and in the second position corresponding to fixing/removal of the tool. There is also a holding element with variety of plates parallel to each other and arranged in the same plane. Each plate of the holding element has two spring deformed sections and at least one bent part. One spring deformed section is directed up and has an end designed for entry into the receiving groove of the bending tool, and it also has the part designed for interaction with a lower rim of the receiving groove at the tool turn.

EFFECT: extended technological capabilities.

10 cl, 5 dwg

FIELD: metallurgy; deformation of metals.

SUBSTANCE: tool holder contains a clamping base with the first clamping surface intended for the interaction with one of the parallel surfaces of the tool, and a clamping pad for clamping the tool, installed so that it may be rotated on a hinge and having the second clamping surface. The said pad is designed so that it may take the first position corresponding to tool clamping, in which the parallel surfaces of the tool are clamped between the first and second clamping surfaces, and the second position corresponding to the tool installation/removal, in which its clamping surface is withdrawn from the first clamping surface. The device also contains a holding element with multiple elastically deformed plates parallel to one another and installed in the same plane. Each plate has the first end rigidly connected to a crossbar, an intermediate part, which abuts the first parallel surface of the tool in the free state, and the second end having at least the first part bent at an angle towards the tool relative to the intermediate part, and the second part bent at an angle in the opposite direction so that the said parts bent at an angle may be held elastically in the receiving groove of the tool when the said plate is in the free state; in the tool installation/removal position of the said pad, the intermediate part of the plate may be elastically deformed for the installation of the said elastically deformed plate parts bent at an angle into the receiving groove and their removal from the groove.

EFFECT: increase in efficiency; simplification of design.

5 cl, 5 dwg

FIELD: plastic working of metals, namely manufacture of parts from shapes.

SUBSTANCE: method comprises steps of applying bending loads at predetermined force or camber of blank for one or several transitions along surface area of blank by means of rotation-local deforming along curvature lines by means of pressing moving roller on extensible bearing units mounted in such a way that to provide different spacing between said bearing units depending upon curvature radius of part. Shaping is realized at minimization of contact spot of upper pressing roller and blank due to lowered diameter of roller and its curvature radius in cross direction. Method is realized by means of machine tool whose upper deforming member is in the form of mounted in rod power drive of roller. Lower deforming member of machine tool is in the form of two extensible sections mounted with possibility of engaging with upper deforming roller. Machine tool is provided with manipulators for supporting worked blank.

EFFECT: modified design of machine tool, reduced power consumption.

10 cl, 4 dwg, 1 tbl, 1 ex

Sheet bending press // 2269391

FIELD: plastic working of metals, in particular, sheet bending equipment.

SUBSTANCE: press has bed, die, punch mounted on traverse for reciprocation in guides by means of two columns, drive formed as cylinder whose stem is connected with two levers, each of said levers being connected through shackle with column. Traverse rotates relative to one of columns. Other column is equipped with retainer for attachment of rotary traverse. Press is further equipped with carriage having rollers arranged in parallel with and moving relative to traverse.

EFFECT: wider operational capabilities.

2 cl, 4 dwg

The invention relates to the field of metal forming and can be used when designing stamps for providing supplies of curvature for receiving the cylindrical surface as close as possible to the set after removal of the stamp upon the occurrence of residual plastic deformation

The invention relates to the field of metal forming, in particular for bending presses

The invention relates to the processing of metals by pressure and can be used for punching, bending and Assembly of sheet parts

FIELD: process engineering.

SUBSTANCE: invention relates to metal forming, particularly, to drawing high-precision parts. Sheet 3D billet, flat or approximately flat, is arranged between two fixed thrusts with hooks and between one or two moving thrusts with hooks arranged opposite said fixed thrusts. Said moving thrusts may move horizontally or inclined to horizon toward fixed thrusts, driven by means of guides and wedges fitted on pressure plate. Said moving thrusts are moved toward fixed thrusts with hooks, moving thrust hooks being used to move one edge of billet to die axis and bend billet into die while opposite edge of said billet is retained by fixed thrust hooks to create combination of billet material before pressing. In further motion of outer slide with pressure plate, pre-bent billet is pressed and, in motion of inner plate, it is expanded.

EFFECT: higher precision, reduced consumption of material an labor input.

5 cl, 7 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to metal forming and may be used for forging, mainly, oblique T-tubes. Proposed device comprises half-dies, male dies to reduce tubular billet axially and composite male die for offset thrust. composite male die for offset thrust is made up of assemblage of spherical inserts. Half-dies are arranged in split container.

EFFECT: reduced material intensity of mould accessories.

2 dwg, 1 ex

FIELD: process engineering.

SUBSTANCE: invention relates to metal forming and may be used for drawing thin-wall complex-shape parts from tubular billet. Billet is mounted on mandrel with cylinder and profile sections. Billet is clamped on mandrel cylinder section and processed by rolls in one or several passes. Each continuous pass forms, first, billet larger-diametre cylindrical section, then shaped section and, finally, smaller-diametre cylindrical section. During first pass, constant-thickness wall billet is produced. Thereafter, in subsequent passes, variable-thickness wall billet is produced with rolls fed onto and removed from the billet as-displaced. Between passes, billet is thermally treated.

EFFECT: higher accuracy of geometric parametres and surface quality, as well as higher efficiency.

7 cl, 4 dwg, 2 ex

FIELD: process engineering.

SUBSTANCE: invention relates to metal forming and may be used in producing thin-wall shells from low-plasticity aluminium alloys by rotary drawing. Prior to rotary drawing, thick-wall billet is heated to temperature making 0.5-0.6 of aluminium allow high annealing temperature. Rotary drawing is performed with billet thinning. Produced thin-wall shell is subjected to thermal treatment to impart preset mechanical properties to aluminium alloy and final cutting.

EFFECT: higher precision and surface quality.

1 ex

FIELD: process engineering.

SUBSTANCE: invention relates to sheet metal forming and may be used for producing hollow articles with constant OD and height. Sheet blanks is produced from sheet material by extruding and blanking by appropriate tool. Sad tool has face surface between its ID and OD representing a cone with apex angle of 120°-160°. Proposed blank is subjected to drawing, drawing with wall thickening and article bottom forming, all said jobs being performed sequentially. Drawing and drawing with wall thickening are performed using cupping punch arranged aligned with blanking punch. Cupping punch features taper of 2-4° at height equal to that of article cavity. In compliance with another version, cupping punch features taper of 10-20° at the height equal to 20-30% of article cavity height.

EFFECT: precise article height and edge shape.

3 cl, 5 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to metal forming and may be used in producing thin-wall shells from maraging steel. Hollow shaped workpiece is made from bar section by extruding and cutting. Shaped workpiece consists of large and small cylinders jointed by adapter cone and features wall thickness varying in height. Large cylinder wall thickness is twice is lathe as that of adapter cone. That workpiece is subjected to extrusion and thermal treatment for stress relief to make thin-wall shell. Rotary extrusion is carried out in three stages with tolerable strain of thin-wall shell. At first stage, workpiece large cylinder is machined to wall thickness equal to or smaller than that of adapter cone. Then local rotary swaging of larger cylinder and final machining are performed.

EFFECT: reduced metal consumption, higher quality of final products.

3 cl, 6 dwg, 1 ex

FIELD: process engineering.

SUBSTANCE: invention relates to metal forming, particularly, to rotary drawing of cylindrical shells, hollow articles and, to static pulse spinning. Spinning tool is fed in crosswise direction relative to revolving workpiece. Additionally said spinning tool is fed in lengthwise direction after each dual return-cross stroke. Note here that spinning tool comprises body with spinning elements to act on workpiece with interference. Note here that said body represents "П"-like box with lengthwise slot for workpiece to pass therein unobstructed. Note that spinning elements represent "П"-like spring clips rigidly fitted in the body on opposite walls. Distance between mating pairs at the start of cross feed in direction perpendicular to workpiece lengthwise axis is equal to workpiece OD, while, at the stroke end, is equals to OD of finished part. Note also that total interference equal to half the difference between said ODs is distributed among all pairs of spinning elements. Mind that a section of spinning tool is made up of sleeve sliding on clip crossarm.

EFFECT: expanded processing performances, higher quality and efficiency.

4 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to metal forming, particularly, to rotary drawing of cylindrical shells, hollow articles and, to static pulse spinning. Spinning tool comprises waveguide and hammer connected with generator of mechanical pulses. Said spinning tool is fed in lengthwise and crosswise directions to drive into billet, while the latter is revolved. Note here that wave guides embraces spinning ring workpiece with rounded working surface and needle part made up of metal wire frieze bundles to allow adjustment of stiffness and with ID smaller than diametre of inner rounded surface by double interference. Note also that spinning ring runs in radial bearings arranged on ring periphery to impart thereto deforming force with static and dynamic components.

EFFECT: expanded processing performances, higher quality and efficiency.

3 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to metal forming, particularly, to rotary drawing of cylindrical shells, hollow articles and, to spinning. Note here that spinning toll represents a disk with its face accommodating spinning roll with its working edge made up of coiled hollow tube. Note also that concentric needle rings are secured on said disk to adjoin spinning roll that are made up of metal wire frieze bundles. Note that spinning element is fixed on moving rotary part, i.e. rotor of end face induction motor that comprises stator with coiled magnetic circuit. Magnetic circuit grooves house m-phase primary. Said motor comprises also rotor with coiled magnetic circuit with short-circuited secondary fitted in its grooves. Axes of spinning tool and machined billet are located mutually perpendicular. Said billet is mounted on centers to be revolved by spinning tool due to friction forces.

EFFECT: expanded processing performances, higher quality and efficiency.

5 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to metal forming, particularly, to rotary drawing of cylindrical shells, hollow articles and, to spinning. Spinning tool is revolved about its axis, fed in lengthwise and crosswise directions to drive into billet. Note here that spinning toll represents a disk with its face accommodating spinning roll with its working edge made up of coiled hollow tube. Note also that concentric needle rings are secured on said disk to adjoin spinning roll that are made up of metal wire frieze bundles. Note that spinning element is fixed on moving rotary part, i.e. rotor of end face induction motor that comprises stator with coiled magnetic circuit. Magnetic circuit grooves house m-phase primary. Said motor comprises also rotor with coiled magnetic circuit with short-circuited secondary fitted in its grooves. Axes of spinning tool and machined billet are located mutually perpendicular. Said billet is mounted on centers to be revolved by spinning tool due to friction forces.

EFFECT: expanded processing performances, higher quality and efficiency.

5 dwg

Deep drawing method // 2245207

FIELD: plastic working of metal.

SUBSTANCE: method of deep drawing-shaping on punch of box-type parts comprises steps of making flanged blank; then shaping blank at reserving formed material in annular grooves on flange of blank; stretching formed material onto punch; additionally reserving formed material in central part of blank in recess of said part; drawing material from reservation zones at braking it. Invention provides increased depth of drawn box type parts by 1.5 -2 times.

EFFECT: increased depth of drawn parts.

2 cl, 2 dwg

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