Bending press for sheet material bending

FIELD: metallurgy.

SUBSTANCE: press consists of upper table with first bending tools and lower table with second bending tools. Tables move one relative to another. One of the tables has two slits wherein there are inserted wedges. There is a regulating device common for both wedges and transferring both wedges. Also, the regulating device has a main control lever for simultaneous transfer of two wedges preferably to equal distance.

EFFECT: raised quality of bending.

18 cl, 9 dwg

 

The technical field

The invention relates to a bending press with tables for controlled deformation.

The level of technology

Bending presses are machines, which themselves are well known. As shown in figure 1, the machine contains the lower table 12 and table top 14, is movable relative to the table 12. Often the lower table 12 is stationary, and the upper table 14 can move up to the bottom of the table under the action of the power cylinder V1and V2that affect the ends 14a and 14b of the upper table 14. Often the lower table 12 has a free edge 12A, provided with fastening means 16 for bending matrices 18. In the same way, the edge 14 with the top of the table 14 is equipped with fastening means 20 for bending punches 22.

Sheet metal or sheet metal F is placed on the bending matrix 18 of the lower table 12. Sheet metal F can have the different length depending on the destination. Under the action of the pistons of cylinders V1and V2mounted on the upper table, the punches 22 are approaching a metal plate or sheet metal F laid on matrices bottom of the table. After contact of the plug 22 with the sheet metal the pressure begins to increase, and the punch zadumivaetsa in sheet metal F, deforming it first in the area of elastic deformation, and then in the field of plastic the deformation, that allows you to get the final bending sheet metal.

Due to the fact that the force is transferred to the upper table 14-cylinder V1and V2that act on the ends of the table, the linear load is distributed between the two ends of the tables corresponds to the line of deformation of the top of the table in the form of a concave arc with the maximum deformation near the mid-plane of the table. This means that at the end of the bending process of the Central group of punches 22 zadumivaetsa in sheet metal F less than end groups. If bending is produced on the matrix, which when bending is perfectly straight, get a product with a more open angle of the bend in the Central part than at the ends. Of course, such a result is unacceptable.

To eliminate this drawback, it was proposed various solutions to control deformation of the edges of tables with various tools with the aim of obtaining a uniform flexible along the entire length of curved products.

Traditionally, these solutions include the implementation of slits, such as slits 24 and 26, shown in figure 1, are made in the lower table 12 symmetrically relative to the Central plane PP' of the press. These slots 24, 26 define between them a Central area 30 of the lower table 12, in which no slits and which has a length b, with each slot 24 and 26 has a length which. In the presence of the slots 24 and 26 of classical type, that is, leaving between them a portion 30 of length b without slots, get, essentially parallel to the line of deformation of the upper edges of the table 14 and the bottom of the table 12.

Thus, the challenge is to create a bending press, capable of providing essentially uniform deformation is subjected to bending sheet metal or sheet metal F along its length when the length is small relative to the length of the tables 12, 14 of the press, or Vice versa, when its length is equal to the length of the tables 12, 14 of the press. An additional difficulty stems from the fact that it is still very hard to regulate the deformation of the upper edges 24", 26" of the slots 24, 26 during the application of force to the flexible upper movable table 14 to the lower stationary table 12 and the perception of this effort in the lower edges 24', 26' of the slots 24, 26.

Disclosure of inventions

The objective of the invention is to solve these two problems through the use of at least one pair of wedges with the location of each wedge in one of the slots 24, 26. The solution according to the invention is characterised in that it includes a common adjusting means for wedges from the specified pair of wedges that can move the wedges of the pair of wedges in the respective slots 24, 26 to better customize the perception of effort.

Thus, the invention is tositsa to a bending press for bending, at least one metal sheet containing a table top, the lower edge of which shall be the first bending tools, and the lower table, the upper edge of which bears the second bending tools, and two tables are movable relative to each other to transfer forces to a flexible metal sheet, and one of these tables has two slots, and each slot has a first edge and a second edge, and the first open end facing the side edge of the table, and a closed end, characterized in that it further comprises at least one pair of wedges, each wedge which located respectively in one of the two slots, and adjusting means common to the wedges of the pair of wedges made with the possibility of moving these wedges a pair of wedges in their respective slots, and the adjusting means includes a main control lever for joint movement of the two wedges of the pair of wedges, preferably at the same distance.

According to one embodiment, each wedge pair of wedges associated with the main control lever through at least one thrust.

According to one embodiment, the adjusting means moves the wedges of the pair of wedges in opposite directions. In this case, the thrust of that tie which provide respectively two wedges of the pair of wedges with the main control lever, attached to this lever with two sides from the center of rotation of the lever.

According to another embodiment, the adjusting means moves the wedges of the pair of wedges in the same direction. In this case, the thrust of which connect respectively two wedges of the pair of wedges with the main control lever that is attached to the lever with the same hand from the center of rotation of the lever.

Preferably a bending press according to the invention contains at least two pairs of wedges, and two wedges of each pair of wedges are located respectively in each of the two slits.

According to the aspect of the invention, two pairs of wedges wedges move the main control lever.

In the invention features a bending press in addition to the main control lever is arranged to move the first pair of wedges wedges further comprises auxiliary control lever is arranged to move the wedges of the second pair of wedges. In this embodiment, the auxiliary control lever is connected with the main control lever so that the position of the auxiliary control lever relative to the main control lever can be adjusted, when the drive main control lever wedges of the first and the Torah pair of wedges can be moved together.

According to a particularly advantageous aspect of the invention the adjusting means is arranged to move the first pair of wedges on the first distance and the second pair of wedges on the second distance, and the first and second distances are proportional to each other.

Preferably, the main control lever and the auxiliary control lever is installed to rotate around the same center of rotation.

According to an advantageous aspect of the invention, each wedge this, at least one pair of wedges forms with the second stationary wedge thrust unit.

In this case, preferably, each wedge this, at least one pair of wedges has a first end rigidly connected to the first edge of the slot, and a second end forming a contact surface of the wedge, which wedge forms a resistant host.

According to an advantageous aspect of the invention, the slots have a constant height, at least in the area of the wedges, so that the first edge and the second edge parallel in the absence of the efforts of the flexible metal sheet.

Preferably the contact surface of at least one of the wedges of each thrust of the site is sloping, the slope ranges from 1% to 40%, preferably from 5% to 10% relative to the parallel edges of the slots.

According to the embodiment, ebony press according to the invention has a vertical middle plane PP', when two slits are located symmetrically with respect to the medium plane. Preferably two slits pass through the entire thickness of the table.

Other features and advantages of the invention will be clear from the subsequent description.

A short list of drawings

Next, with reference to the accompanying drawings will be described in detail preferred embodiments of the invention that do not have restrictive.

In the drawings:

figure 1 depicts a bending press with two slots located symmetrically relative to the Central plane PP' of the press and extending from opposite lateral sides of the bottom of the table

figure 2 schematically depicts the thrust unit formed by two wedges, one of which is connected to the top edge of the slot, and the other is connected with the lower edge of the slot,

figure 3 schematically depicts a bending press in accordance with the first embodiment of the invention,

figure 4 depicts a magnified portion of the bending press according to Fig 3,

figure 5 depicts an enlarged view of another part of the bending press according to Fig 3,

6 depicts a portion of the bending press in accordance with the second embodiment of the invention,

7 depicts a magnified portion of the bending press according to Fig.6,

Fig depicts a diagram illustrating a cross the s position of the two pairs of stops as a function of the position of the main control lever in accordance with the first exemplary embodiment in figure 3-5,

Fig.9 depicts a chart illustrating the transverse position of the two pairs of stops as a function of the position of the two control levers, main and auxiliary, in accordance with the second exemplary embodiment in Fig.6 and 7.

The implementation of the invention

As figure 3 illustrates, the phrase "a pair of wedges 29 mean one wedge 29 located in the slot 24, and one wedge 29 located in the slot 26. In this exemplary embodiment is also provided a second pair of wedges 29' with one wedge 29' into the slots 24 and one wedge 29' into the slots 26. The wedges 29 are located closer to the Central portion 30 than the wedges 29'. In this example implementation, each wedge 29 or 29' is connected with another wedge respectively 28 or 28'.

Figure 2 shows in section two wedges 28, 29 of the stop 27 according to the invention. Each of the two wedges 28, 29 has a first contact surface opposite the contact surface of the other wedge 28', 29'. Before application the efforts of the flexible gap J divides these respective contact surfaces. Shown in figure 2, the wedges 28, 29 illustrate an example implementation of wedges that can be used in the invention, but the invention is not limited to this type of wedges.

Each of the wedges 28, 28', 29, 29' mounted on a support 40, 41, associated with the edge 24', 26' or 24", 26" of the slot 24 or 26. The function of each wedge 28, 28', 29, 29' / the stop 27 is regulirovanie convergence of the edges 24', 24" and 26', 26" of each of the slots 24, 26 when the application's efforts flexible. By adjusting the convergence of the edges 24', 24" and 26', 26" of the slot 24 or 26 to regulate the deformation of the upper edge 24", 26" of the slot 24 or 26 and, therefore, deformation of the upper edge 12A of the lower table 12.

At least one of the supports 40 or 41, and under certain conditions, both the supports 40 and 41 are made with the possibility of lateral movement, i.e. movement along an axis parallel to the parallel edges 24', 26' and 24", 26" of the slot 23, 26, on which they are installed.

In the examples selected to illustrate the invention the drawings, only support 40 is made to move by means of the adjusting means, but it is obvious that the support 41 of the wedges 28 or 28' may also be made movable. However, it should be noted that what is important here is the relative positioning of the two wedges 28, 29 or 28', 29', which belong to one and the same emphasis and designed for contact with each other, so that by moving only one of these, 28, 28' and 29, 29' are adjusting the relative position of the wedges 28, 29 or 28', 29' for optimum transmission of forces from one wedge to another. The relative position of the two wedges 28, 29 or 28', 29' intended to come into contact with each other, can be adjusted with a precision of hundredths of a millimeter as for wedges, that is for pairs of wedges due to the adjusting means in accordance with the invention.

The first task of the invention consists in a symmetrical movement of the two wedges of one of the pair of wedges 29, 29', that is to approach or removal of one wedge of the pair of wedges 29, 29' relative to the Central plane PP' was transformed into the exact identical approach or removal of the other wedge of the pair of wedges 29 or 29'. The solution is achieved by the embodiment according to figure 3 and 4.

Shown in figure 3 and 4 common adjusting means for moving the wedges of one of the pair of wedges 29 or 29' is a primary control lever 50. This primary control lever 50 includes a head 50A of the lever that can be rotated around the hinge axis, and a driving shoulder 50V. The center Of rotation is located on the lower table 12, preferably in the middle of the plane PP'. The primary control lever 50 is actuated at the end 80 of the drive shoulder 50B, which has a handle for grasping by the operator. Each wedge of the pair of wedges 29 and 29' is connected with the main control lever 50 of the respective thrust 60, 61, 62 and 63.

Thrust 61 and 62 of equal length connected to the main control lever 50 wedges 29 pairs of wedges located closer to the Central plane PP'. Each of these two rods 61, 62 has one end attached to the wedge 29 and the other end 61', 62'attached to the cylinder 50A near the axis Of rotation. The distance d between the con is om 61', 62' and the axis Of the same and small, it can be set, for example, 5 mm In this example perform the ends 61' and 62' is attached to the head 50A of the lever symmetrically on both sides of the axis O at the ends 61', 62' and the center O are on the same line.

In the same way thrust 60 and 63 of the same length each have one end attached to one of the wedges 29', and the other end 60', 63', attached to the head 50A of the main control lever 50 at the same distance D from the axis Of rotation, is equal to, for example, 40 mm Two end 60' and 63' of the two rods 60, 63 are like the ends 61' and 62' rods 61, 62 on both sides of the axis Of rotation at the ends 60', 63' and the axis About are on the same line.

When the main control lever 50 is actuated so that his head 50A of the lever is rotated to a certain angle, it causes rotation of the ends 60', 63' and 61', 62' of the respective rods 60, 63 and 61, 62 so that the thrust 61 and 62 move each wedge of the pair of wedges 29 to the first distance, and thrust 60, 63 move each wedge of the pair of wedges 29' to the second distance. The ratio of the first distance to the second distance is equal to the ratio of D to d. Thus, the invention allows to adjust the relative position of the wedges of the two pairs of wedges 29 and 29' proportional way.

In this example, perform the moving rods 61, 62 and 60, 63 is moving privlige the Oia or the removal of the two wedges of each pair of wedges 29 or 29' relative to the Central plane PP', that thrust 61, 62 and 60, 63 respectively installed in pairs, with the ends 60', 63' and 61', 62' rods of each pair are located on both sides from the axis Of rotation. In the exemplary embodiment according to Fig 3 and 4 move the wedges of each pair of wedges 29 and 29' are symmetrical movements, so that the wedges of the pair of wedges 29 and 29' preserve the symmetry of their position relative to the Central plane PP'.

In that hypothetical example implementation, when the ends 61', 62' two rods 61, 62 are located on one side relative to the axis Of rotation, the wedges of the pair of wedges 29 will move in one direction, so if one wedge of the pair of wedges 29 is removed from the mean plane PP', another wedge of the pair of wedges 29 is close to the mean plane PP'. Of course, the same location of the ends 60', 63' two rods 60, 63 on the one hand relative to the axis Of rotation would have the same effect on the movement of each wedge of the pair of wedges 29'. In this exemplary embodiment, not shown in the drawings, movement of the pairs of wedges 29 and 29 ' are movements, asymmetrical relative to the Central plane PP'.

Preferably the position of the main control lever 50 is indexed. Figure 5 illustrates the possibility of such indexing. Figure 5 depicts the end 80 of the drive shoulder of the main control lever 50. The end 80 of the drive shoulder of the main control the lever 50 includes a handle, provided with a rod which can be inserted into the multiple holes 100 index and the displacement of the main control lever 50 is holding it in the desired position; each of the holes 100 of the index determines the angle of rotation of the main control lever 50, and hence the degree of engagement. The end 80 of the main control lever 50 may be operable by the operator or, under certain conditions, an automated system that is able to move the primary control lever 50 by rotation.

Fig illustrates the relationship between the position of the main control lever 50 and the movement of the wedges of each pair of wedges 29 and 29'. As you can see in the diagram, the primary control lever 50 has been moved from its original position (figure 5 corresponds to position 0) in position 4, for example corresponding to the fourth hole t4 indexing (see figure 5). While the wedges of the pair of wedges 29 has moved a distance dA, and the wedges of the pair of wedges 29' shifted to the distance dB. Move the pairs of wedges 29 and 29' are always proportional. From the equation k=D/d (see figure 4), we obtain the relation dB=k×dA. As an example, if we take the ratio of k equal to 8 (d=5 mm, D=40 mm), the movement of the wedges 29 of the pair of wedges 29, equal to 0.4 mm, corresponds to the movement of the wedges 29', equal to 3.2 mm

In the example vypolneniya 6 and 7, a bending press according to the invention includes an auxiliary control lever 52 in addition to the primary control lever 50. Like the primary control lever 50 of the auxiliary control lever 52 includes a head 52A of the lever that can be rotated around the hinge axis, and a driving shoulder W. This auxiliary control lever 52 is strengthened by its end on the axis Of rotation of the main control lever 50 and its second end 81 fortified on the primary control lever 50. Thus, the axis Of rotation is common to the two levers 50 and 52. Thrust, 60 and 63 of the wedges of the pair of wedges 29' fortified on the primary control lever 50 in the same manner as in the examples in figure 3 and 4 (the end of the 60', 63' are at a distance D from the axis Of rotation). In contrast, thrust 61 and 62 strengthened their ends 61', 62' on the head 52A auxiliary control lever 52 at a distance d from the axis Of rotation. The lever 52 can be tilted relative to the lever 50 so as to change the projection distance d on the axis, which is defined by an axis and About the late 60' and 63'. Auxiliary control lever 52 can be maintained in a selected inclined position relative to the lever 50 to the actuator lever 50 is moved simultaneously wedges 29 and 29'. The position of the lever 52 relative to the primary control lever 50 can be indexed by the system (holes 101 indexing), similar to the above-described system 100 of the indexing key control measures the Aga 50. Thus, the movement of rotation of the auxiliary control lever 52 is the same as moving the rotation of the main control lever 50, by translation of the rod handles on the ends 80, 81, respectively, of one of the indexing holes in the other hole number 100, 101 of the indexing holes. It is clear that moving the primary control lever 50 causes movement of the auxiliary control lever 52, and hence all rods 60, 61, 62 and 63, while the movement of the auxiliary control lever 52 causes movement of rods 61 and 62.

It should be noted that in the example selected to illustrate the invention, there are nine holes indexing for moving the auxiliary control lever 52 relative to the primary control lever 50 (from position 4 to position "-4" with the passage through the position 0, in which two levers 60 and 52 combined), as mentioned with reference to figure 9 in accordance with this example implementation.

As shown in Fig.9, drive shoulders 50V, V levers 50, 52 can be located on the same line (position 0 of the auxiliary control lever 52: Central case And figure 9). This creates a situation in which there is a single primary control lever 50 in figure 3-5 with the transverse motion of the pairs of wedges 29 and 29', Ident is cnym presented on Fig. In contrast, due to the auxiliary control lever 52 can choose move exclusively wedges of the pair of wedges 29. So, Fig.9 illustrates except 0, in which two driven shoulder 50V, V are on the same line, the two extreme positions of the control lever 52 relative to the primary control lever 50, namely the relevant provisions of the "4" and "-4". The ability to move the auxiliary control lever 52 relative to the primary control lever 50 allows you to change the relation of proportionality between the displacement of the wedges 29 on the one hand and wedges 29' on the other side.

In this second example, execution of the main control lever 50 is moved from its original position (position 0) to "3", which causes a displacement in proportion to each of the wedges of the two pairs of wedges 29 and 29'. Next, the operator or automated system has the ability to only move the wedges of the pair of wedges 29 located closer to the Central plane PP', for example, by translation of the handle 81 on the end of the auxiliary control lever 52 from the position "4" in position "-4" (that is, from one extreme position to the other). As a result, when the movement of the two levers 50 and 52 is proportional to the displacement between the wedges of the two pairs of wedges 29 and 29' will not be equal to videocasinoonline k, and equal to (k+γ), where γ is a function of the movement of the auxiliary control lever 52, can only move the wedges of the pair of wedges 29.

It should be noted that in the framework of the invention can be provided that the control levers 50 and 52 are independent of each other. This is not shown in the example of implementation of the main control lever 50 may, for example, to cause rotation only rods 60, 63, and an auxiliary lever 52 causes rotation of the rods 61, 62.

Although the invention is illustrated by the two pairs of wedges, and the wedges of each pair of wedges 29, 29' are located in each of the slots 24, 26, the invention is applicable for any number of pairs of wedges wedges located in each of the slots 24, 26.

1. A bending press for bending at least one metal sheet containing a table top, the lower edge of which shall be the first bending tools, and the lower table, the upper edge of which bears the second bending tools, and two tables are movable relative to each other to transfer forces to a flexible metal sheet, with one of these tables has two slots, and each slot has a first edge and a second edge, and the first open end facing the side edge of the table, and a closed end, characterized in that it additionally contains at least one the AGC wedges, each wedge which is, accordingly, one of the two slots, and adjusting means common to the wedges of the pair of wedges made with the possibility of moving these wedges a pair of wedges in their respective slots, while the adjusting means includes a main control lever for joint movement of the two wedges of the pair of wedges, preferably at the same distance.

2. A bending press according to claim 1, characterized in that each wedge pair of wedges associated with the main control lever through at least one thrust.

3. A bending press according to claim 1 or 2, characterized in that the adjusting means moves the wedges of the pair of wedges in opposite directions.

4. A bending press according to claim 3, characterized in that the thrust, which connect respectively two wedges of the pair of wedges with the main control lever attached to the said lever with the two sides from the center of rotation of the lever.

5. A bending press according to claim 1 or 2, characterized in that the adjusting means moves the wedges of the pair of wedges in the same direction.

6. A bending press according to claim 5, characterized in that the thrust, which connect respectively two wedges of the pair of wedges with the main control lever attached to the said lever with the same hand from the center of rotation specified growling is A.

7. A bending press according to claim 1, characterized in that it contains at least two pairs of wedges, and two wedges of each pair of wedges are located respectively in each of the two slits.

8. A bending press according to claim 7, characterized in that the displacement of the wedges of the two pairs of wedges is done through a main control lever.

9. A bending press according to claim 7, characterized in that in addition to the main control lever is arranged to move the first pair of wedges wedges further comprises auxiliary control lever is arranged to move the wedges of the second pair of wedges.

10. A bending press according to claim 9, characterized in that the auxiliary control lever is connected with the main control lever in such a way that ensured the possibility of adjusting the position of the auxiliary control lever relative to the main control lever, when the drive main control lever wedges of the first and second pair of wedges can be moved together.

11. A bending press according to any one of claims 7 to 10, characterized in that the adjusting means is arranged to move the first pair of wedges on the first distance and the second pair of wedges on the second distance, and the first and second distances are proportional to each other.

12. Bending ol the MOP according to claim 9, characterized in that the main control lever and the auxiliary control lever is installed to rotate around the same center of rotation.

13. A bending press according to claim 1, characterized in that each wedge is specified, at least one pair of wedges forms with the second stationary wedge thrust unit.

14. A bending press according to item 13, wherein each wedge is specified, at least one pair of wedges has a first end rigidly connected to the first edge of the slot, and a second end forming a contact surface of the wedge, which wedge forms a resistant host.

15. A bending press according to claim 1, characterized in that the slots have a constant height, at least in the area of the wedges, so that the first edge and the second edge parallel in the absence of the efforts of the flexible metal sheet.

16. A bending press according to 14, characterized in that the contact surface of at least one of the wedges of each thrust of the site is sloping, the slope ranges from 1% to 40%, preferably from 5% to 10% relative to the parallel edges of the slots.

17. A bending press according to claim 1, characterized in that it has a vertical middle plane, while two slots are located symmetrically relative to the specified mid-plane.

18. A bending press according to claim 1, characterized in that the two about the iesi pass through the entire thickness of the table.



 

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22 cl, 9 dwg

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

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

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

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