Bottom-drive press

FIELD: process engineering.

SUBSTANCE: invention relates to plastic material forming, particularly to plastic material forming equipment. Proposed press comprises annular holder preventing folding, forming assembly with bottom press tool, press unit to clamp press tool including top press tool and device to apply pressing force to top press toll from its rear. Bottom press tool rests on slider furnished with its lifting/lowering drive mechanism. Top press tool has clamping part interacting with annular holder. Clamping force is applied to top press tool rear after final stage of lowering press assembly for clamping press tool and top press tool.

EFFECT: higher quality of forming and efficiency.

11 cl, 26 dwg

 

The technical field to which the invention relates.

The present invention relates to a press used for forming a metal material or non-metallic material, and, in particular, to high-precision stamping press with the bottom of the drive.

The level of technology

The press is widely used as a means of performing plastic forming, which is the extraction of metallic and nonmetallic materials. In such presses, the simple (one-sided) actions typically used frame construction, in which the rack is mounted on the frame, and the upper part of the press fitted on top of the rack. As shown in figure 1, the slide f is installed on the upper stamp e (matrix in this example)made with the possibility of raising or lowering by means of a drive device (not shown)provided on the side of the upper part of the press. The bottom stamp g (punch in this example) is attached to the frame, and the retaining ring h, which prevents the formation of folds, is located around the lower stamp g. The retaining ring h, which prevents the formation of folds, based on the number of shock-absorbing rods m, passing from the support k, which is raised or lowered by means of pneumatic cylinders j.

In this press similar to the one shown is a figure 1, the course for stamping performed by lifting the supports k to uplift prevent the formation of folds rings h to the level of the bottom of the stamp through a shock-absorbing rods m, the lowering of the slide to clamp the peripheral edge of the workpiece W by preventing the formation of folds retaining ring h and the peripheral edge of the upper stamp e, further pressing and lowering of the slide f in this state and lowering the retaining ring h, which prevents the formation of folds, ensuring deadlock.

However, in the conventional press the upper side of the slide becomes formative site of the press, and slide down on the whole length of the stroke required for forming, by means of the drive mechanism. Thus, the stroke length becomes large, and it is difficult to provide energy savings. In addition, since the stroke length is large, the overall height of the press becomes large, and thus, requires a large space inside the building. In some cases there is a situation in which the installation (installation) cannot be performed.

In addition, in the case when the articles to be stamped, represents, for example, the panels, such as body parts of vehicles or doors of vehicles, presents cars, there has been a continuous led the increase in the number and complexity of forms, and development of new materials, and, accordingly, the requirements for precision in the press become very high.

To meet these requirements usually dies are processed with high precision, using a frame structure, the rigidity of which was high, or is used to control the pressure control method by means of computer numerical control. However, due to the large load during the operation of punching is impossible to avoid deflection due to elastic deformation, and the problems arising from this.

That is, the deflection δ1 occurs in the slide, as shown in figure 1, due to the large load for stamping. This leads to disruption of tight contact between the slider and the top of the stamp. Thus, it is difficult to evenly transfer the force of plastic deformation (forming force) harvesting, and uniform contact of the workpiece with the cavity of the stamp becomes difficult to implement. Therefore, precision forming (shaping) is reduced.

In addition, in the conventional press the retaining ring that prevents the formation of folds, based on the damping rods for stamp increments from 150 to 300 mm, and a similar shock absorbing rods are of such dimensions that they continue so that they pass through the punch plate. For this reason, the deflection δ2 n the inevitable will occur to prevent the formation of folds holding the ring between the shock-absorbing rods due to compressive loads, the acting from the side of the slide. For this reason there has been uneven forces that prevent the formation of folds, and easily occurs, which is low precision stamping, such as reducing the thickness of the sheet or education line surge seal.

In addition, in the conventional press drive mechanism such as hydraulic power cylinder or crank drive mechanism of the type used as drive mechanism of the slide. Since the drive mechanism of the first-mentioned, may not enforce a large number of strokes per unit of time, is difficult to achieve high-performance. Although the drive mechanism, the latter can provide high performance and a large number of moves, there are problems associated with the fact that the force acting in the processing, the processing speed, the boundary position of the stroke, etc. can not be set arbitrarily, that the motion of the slide is limited, that the speed of the RAM cannot be regulated in accordance with various conditions such as profiles, obtained by stamping, or the size of the products, or materials, and that it is impossible to adjust capacity in accordance with the length of the slide.

Thus, the applicant of this invention proposed a press with rocker mechanism in the audience is AI applications for the Japan patent No. 2001-300778, will not pass the examination. In this press rocker mechanism for a slide made with the capability of raising and lowering by means of the knee-lever mechanism, and a servo motor and a screw nut is used as the drive means of the knee-lever mechanism. This press has the advantage that can be provided with high processing speed and a large number of moves, as well as processing speed, course and performance can be set arbitrarily.

However, the above device of the prior art is inefficient from the point of view of treating the above-mentioned deflection of the phenomenon of uneven efforts that prevent the formation of wrinkles, and eliminate the phenomenon of deflection of the slide. In addition, the slider down on the whole length of the stroke required for stamping. Thus, the stroke length becomes large, and difficult to ensure energy savings. In addition, the length of the lead screw affects the height of the press, and the lead screw becomes long when the stroke of the slide becomes large. Therefore, there is a problem with the fact that the overall height of the press becomes large.

Patent document 1: JP-A-2001-300778

Disclosure of inventions

The problem addressed by the invention

The invention was made is prohibited to solve the above problems. Thus, the first aim of the invention is to develop a simple press of the action with the lower actuator capable of providing energy savings, space savings and the implementation of formative characteristics with high accuracy in a balanced manner.

The second objective of the invention is to develop a simple press of the action with the lower actuator capable of high performance (low cycle time, a large quantum of issue), in addition to the above goals.

Part of the solution

To achieve the above first objective of the press with the lower actuator includes preventing the formation of folds ring holder fixedly located on the frame; forming a node of the press, including the lower stamp inside preventing wrinkling of the holder, a slider that serves as the backbone of the lower stamp inside the frame, and a drive mechanism for lifting and lowering of the slide; a drive mechanism mounted from the upper part of the press, and flat, raised or lowered by the drive mechanism; node press to clamp stamp, which includes the upper stamp with the clamping part, which provides grip in interaction to prevent the formation of folds holder at its periferica; and device for application of clamping force to the upper stamp with his back after the last stage of the lowering of the RAM of the press site for clamping stamp, upper stamp, and is intended to increase precision stamping.

Advantages of the invention

In the invention, the host of the press to clamp stamp is located on the upper part of the press, forming press site is located on the side of the bed, the site of the press to clamp stamp does not fall under pressure during lowering, and required stroke length required only to perform the clamping of the stamp. Thus, the overall height of the press can be small. In addition, the punching is carried out by raising the lower molding press site for the application of pressure to the bottom of the press in a state where the node press to clamp stamp functions and the top stamp is adjacent to prevent the formation of creases in the holder. Thus, the minimum speed equal to go for stamping, will be sufficient from the point of view of the stroke length formative site of the press. The result can be provided to conserve energy.

In addition, since preventing the formation of folds holder does not rise and does not fall in a state where it is based on a shock-absorbing rods, but fixed in a predetermined position n of the frame, unlike conventional media does not occur deflection preventing wrinkling of the holder between the rods. In addition, the device for increasing the accuracy of stamping provided by host press to clamp stamp, and clamping force is directly applied to the upper stamp with his back after the last stage of the descent of the press site for clamping stamp. Thus, it may be provided with at least one of the optimization efforts that prevent the formation of folds and current by clamping the upper part of the stamp and prevent the formation of folds holder and correction of deflection from the side of the slide, and, therefore, can be enhanced precision stamping products.

Brief description of drawings

Figure 1 is a section diagram showing a conventional press simple actions and the situation regarding the education of deflection in the conventional press.

Figure 2 is carried out with the local section front view showing a first variant implementation of the press with the lower actuator according to the invention.

Figure 3 is a longitudinal front sectional view showing the details of the press in figure 2.

Figure 4 is a partial enlarged image, press 3.

Figure 5 is a partial enlarged image, shows the abuser example supporting high pressure part and the clamping element in the device to improve the accuracy of stamping.

6 is a partial magnified image showing another example supporting the high pressure part of the device to improve the accuracy of stamping.

7 is an explanatory view showing an example of the means to create pressure in the device to improve the accuracy of stamping.

Fig is an explanatory view showing another example of a means to create pressure in the device to improve the accuracy of stamping.

Fig.9 is a block diagram showing the means for regulating pressure in the device to improve the accuracy of stamping.

Figa is a cross section showing a first variant implementation stages and showing the state at the last stage before stamping.

FIGU is a cross section showing a first variant implementation stages, and showing the state in which the lower die and the upper stamp paired together, and the force exerted prevent the formation of creases.

Figs is a cross section showing a first variant implementation stages and showing the state at the last stage, in which the lower stamp is raised to perform the stamping.

Fig.10D is a cross section showing a first variant implementation of the population in stages and showing the state, in which punching is completed and the top stamp is raised.

Figa is a cross section showing the state of the device to improve the accuracy of stamping, when the upper stamp came into contact with preventing the formation of folds holder.

FIGU is a cross section showing the state of the device to improve the accuracy of stamping time stamping.

Fig is a magnified image of the state in figure 10 Century

Fig is a magnified image of the state figs.

Fig illustrates an example graph of the stroke and pressure for the press, for which the invention is applied.

Fig is a front view showing another example of the drive mechanism of the slide forming press site.

Figa is a cross section showing the operation when using the drive mechanism of the slide on Fig in a phased manner and showing the state before stamping.

Fig represents a cross-section showing the operation when using the drive mechanism of the slide on Fig in a phased manner and showing the state in which the lower die and the upper stamp paired together, and the force exerted prevent the formation of creases.

Figs is a cross section showing the function is W when using the drive mechanism of the slide on Fig in a phased manner and showing the state at the last stage, when the lower stamp is raised to perform the stamping.

Fig.16D is a cross section showing the operation when using the drive mechanism of the slide on Fig in a phased manner and showing the state in which the stamping is completed and the top stamp is raised.

Fig is a front view showing a second variant embodiment of the invention.

Fig is a partial magnified image of the device on Fig.

Fig is a view in plan of the device on Fig.

Figa is a cross section showing another variation-aware high pressure part and the clamping element in the second embodiment.

FIGU is a view in plan of an image on figa.

Fig is a front view showing an example in which the direction of the clamping element according to the second variant implementation is changed to the opposite.

Fig is a front view showing a third variant embodiment of the invention.

Fig is a section made according to line x-X on Fig.

Figa is a cross-section of the part, which uses the adjusting items in option on Fig.

Figa is a cross-section of a part that does not use the adjusting items in variations which those on Fig.

Fig is a front view showing an example in which the direction of the clamping element according to the third variant of implementation changed to the opposite.

Fig is a partial magnified image of the device on Fig.

REFERENCE POSITION

2: SHAPING the HOST PRESS

2A: the CRAWLER

2b: DRIVE MECHANISM

2nd: CAM LEVER LINK

2f: ENGINE CONTROLLED FROM the DIGITAL SYSTEM

3: NODE PRESS TO CLAMP STAMP

3b: DRIVE MECHANISM

3d: the CRAWLER

3E: KNEE-LEVER MECHANISM

3f: ENGINE CONTROLLED FROM the DIGITAL SYSTEM

5: a DEVICE for increasing the ACCURACY of STAMPING

5A: BASE

5b: SUPPORTING HIGH blood PRESSURE

5b1: FIRST SUPPORTING HIGH blood PRESSURE

5b2: the SECOND SUPPORTING HIGH blood PRESSURE

5: a TOOL for generating PRESSURE

5 C1: FIRST MEANS for CREATING PRESSURE

5 C2: the SECOND MEANS is a PRESSURE

5e: PRESSER

E: FIRST PRESSER ELEMENT

E: SECOND CLAMPING ELEMENT

And: BOTTOM STAMP

In: UPPER STAMP

Preferred embodiments of the inventions

Preferably the device for application of clamping force to the upper stamp with his back to increase the accuracy of the stamping includes iscourse base, located between the lower surface of the slide and the top of the stamp; supporting high pressure portion embedded in the base; a clamping element having a clamping surface located at the bottom surface of the slide or the rear surface of the upper punch and the surface opposite to the clamping surface and facing toward supporting high pressure part; located outside the Foundation of the creation tool-pressure environment, designed to maintain high pressure, supporting the high pressure part; and located outside the Foundation of the tool pressure control environment designed to maintain high pressure and supplied to support the high pressure part of the means to create pressure.

If you use this construction, the retainer element is strong pressing the bottom surface of the slide or the rear surface of the upper punch through the submission of an environment designed to maintain high pressure, supporting the high pressure part of the means to create pressure, and in this case, the concave deflection of the slide is adjusted. As a result, the slider and the top stamp is entered into tight contact with each other, so that the force of the plastic deformation can be evenly lane is given to the workpiece, and the pressure surfaces of the upper and lower stamp, which is biased to the workpiece is aligned. Since for this reason the state of plastic flow of the material is uniform, can be enhanced form attached to the workpiece while stamping.

In addition, as provided by the means for regulating the supply pressure environment designed to maintain high pressure, supporting the high pressure part of the tool to create a pressure force acting from the side of the clamping element, can be adjusted in accordance with the stroke of the press slide. Thereby restraining force that prevents the formation of folds and acting on the workpiece can be adjusted to the optimal value, and the force exerted by the clamping element, is increased at the final stage of forming, so that the deflection of the slide can be adjusted. In addition, since the base includes a clamping element and supporting high pressure portion becomes flat site, the design is simple, and the installation in the press is also easy.

The invention supports high pressure part consists of a camera body and an elastic element is built into the camera body, or consists of the camera body and the fluid, which fills corpuscles.

Since in accordance with the first specified option elastic element extends through an environment designed to maintain high pressure, to move the clamping element, the seal is easy. In addition, since in accordance with the last specified option presser element directly exposed to high pressure, the sensitivity becomes good, and eases pressure control.

Preferably the means for creating pressure has a servo motor as a source of drive force.

In accordance with this, the pressure in supporting the high pressure part, which moves the clamping element can be precisely and easily adjusted, and can provide optimal effects, adapted to the degree of deflection, the material properties of the workpiece, the thickness of the sheet, etc.

Sensor for pressure regulation to be submitted to support the high pressure part of the means of creating pressure, is located between the bottom surface of the slide and the rear surface of the upper punch or between the base and the rear surface of the upper punch.

Since in accordance with this regulation to the optimum pressure can be carried out in response to the state of deformation of the deflection, that is exactly what th correction can be improved.

Depending on circumstances, the invention includes a variant in which the presser element and supporting high pressure part consist of pneumatic cylinders, these cylinders are located at the base with predetermined intervals.

Accordingly, since a predetermined number of small piston cylinders may be located in the base, the manufacturing device is simple. In addition, if many rows piston cylinders are arranged in the direction of the width of the camera body, you can provide a more accurate force adjustment correcting deflection and forces that prevent the formation of creases.

Other preferred aspects of the invention are the following:

1) presser element has the form of a single disk with a size sufficient to cover the area to prevent the formation of folds.

In accordance with this design is simple, and the manufacturing is easy.

2) Presser element is the first element in its Central zone and the second element is in place, appropriate to the area to prevent the formation of folds, supporting high pressure part consists of the first supporting high pressure part, which corresponds to the first element and the second supporting high pressure part corresponding to the second element, and redtwo create pressure comprises first means is a pressure, provided support for the first high pressure part, and the second means is a pressure provided to the second supporting high pressure part.

In accordance with this maintenance of high pressure to support the increased pressure of the holder and maintain high pressure for correction of deflection can be adjusted independently, and can be provided with optimum holding force that resists wrinkling, and optimal correction of the deflection of the slide in accordance with the stroke of the press slide.

In this case, variations of the above paragraph (2) include the case in which the first element is disk-shaped and the second element has a ring shape in the plan, and the case in which the first element is disk-shaped, or the first element and the first supporting high pressure part consist of a set of pneumatic cylinders, which are connected to each other and are located with the required intervals, and the second element and the second supporting high pressure part consist of a set of pneumatic cylinders, which are connected to each other and are located with the required intervals.

In accordance with this can be implemented regulation to achieve the optimum holding force, preventing the formation of folds modified depending on the Anna to the properties and conditions of formation of the blanks. In particular, in the case where the second element and the second supporting high pressure part consist of a set of pneumatic cylinders, which are connected to each other and are located with the required intervals, the magnitude of the restraining force that prevents the formation of folds can be adjusted locally and in a simple way and can be obtained optimum holding force, preventing the formation of folds and the corresponding material, size, etc. of the blanks.

Preferably the drive mechanism of the press site for clamping stamp includes a motor controlled by a digital system and lever elements, and a drive mechanism forming press site includes a motor controlled by a digital system and lever elements.

Since in accordance with this end position when the lifting/lowering, speed, processing speed and performance can be set arbitrarily and can be adjusted appropriately, can be obtained a sufficiently large number of moves. In particular, in the case when using eccentric lever parts for the drive mechanism of the formation site of the press, the drive mechanism is rotary and has no time stop. Thus can be obtained a large discharge stroke, approximately twice actibusque in the press with servo drive according to the prior art.

Although other characteristics and advantages of the invention will become apparent from the following detailed description, it is obvious that the invention is not limited to the structures shown in the embodiments of the exercise, until they include the basic principles of the invention, and can be made a variety of changes and modifications.

Option 1 implementation

Further embodiments of the invention will be explained with reference to the accompanying drawings.

2 and 3 show a first variant of the press with the lower actuator provided with a digital actuator, in accordance with the invention. Reference character 1 designates the supporting frame of the press, which has a frame 1A, a lot of racks 1b and the upper part 1 with the press. The center of the frame 1A is provided with formative node 2, the press, and the upper part of the press is provided with a hub 3 press to clamp stamp (top node press). Punch plate 4 is located on the upper surface of the bed.

Formative node 2 press (bottom node press) includes a bottom stamp And the slider 2A, located in the hole in the frame, and drive gear 2b, intended for raising or lowering the slide bar. In the drive mechanism 2b are preferably used engine 2f controlled by a digital system such as a servo motor or engine computer is ikovym program management, and a pair of right and left Cam lever parts 2E, which are driven by this engine.

In a detailed review, you can specify that the eccentric lever links 2E have a first arm 201, the ends of which are respectively fixed offset from the center locations of the pair of right and left rotating discs 200 and 200, the second levers 202, the rear ends of which are connected with the free ends of the first arm 201 and the other end of which is connected to the slider 2A, and third levers 203, the rear ends of which are connected with the free ends of the first arm 201 and the other ends of which are still attached to the frame. Rotating disks 200 and 200 are sprockets, respectively, at their outer peripheries and arranged to bring them into rotation in opposite directions by means of a toothed wheel driven a leading gear wheel of the engine 2f controlled by a digital system, small gears, located in the center of this large gear and small gear wheel which engages with this small gear.

The bottom stamp And punch) is located on the upper surface of the punch plate 4 and the bottom stamp And connected with the upper part of the slider 2A by means of the coupling unit, which extends through hole is a hole punch plate 4.

Preventing wrinkling of the ring holder 7, which puts the plate-like workpiece W in a predetermined position, attached to the upper surface of the punch plate 4, and the spacer block 8, which captures the top stamp In during lowering of the upper die, thereby adjusting the stroke, mounted on the punch plate on the outside preventing wrinkling of the holder 7. Spacer block 8 can be formed as one-piece frame and can be represented as a set of separated individual elements (columns or walls). However, in any case, the height of the spacer block is set equal to the size that corresponds to the height level in a state where the workpiece W is to prevent the formation of folds holder 7 before stamping, or level, moderately exceeds the above level.

In addition, in this embodiment, to achieve a balanced lifting the lower punch And the guide pins (column) 21 integrated with predetermined intervals around the coupling block of the slider 2A and the longitudinal hole 41, which provide the ability to insert/remove the guide pins 21, are located in the punch plate 4. In addition, to stabilize the movement of the lifting/lowering the lower punch And the lifting pins 42, which Ref is tsya guide pins 21, inserted in the longitudinal hole 41 in accordance with the lower surface of the lower stamp A.

Node 3 press to clamp stamp has a 3d slider and the drive mechanism 3b for raising or lowering this slider. Although the drive mechanism 3b may be the same as the drive mechanism forming the node 2, the press is preferably provided with lowering with high speed and great clamping force of the stamp. Thus, in this embodiment, are a pair of right and left knee-lever mechanisms 3E and 3E and 3f engine controlled by a digital system (e.g., an AC servo motor and so on).

Each of the knee-lever mechanism 3E has a first lever element 301, one end of which is connected with a nut 300, which is screwed on the lead screw 304, driven in rotation by the motor 3f, the second lever element 302, one end of which is connected to the upper part of the press, and the third lever element 303, one end of which is connected with the slide 3d, and the other ends of the lever elements are assembled and connected together through the axes of rotation (hinge).

In addition, the tool that performs the function of correcting the deflection of the slide and/or function of the pressure equalization to combat the formation of wrinkles in order to increase precision stamping, is provided in the node 3 press the pressure on the stamp and the vicinity. In particular, it provides the crawler 3d node 3 for clamping the punch press and the device 5, which provides the application of a clamping force to the top of the stamp In the back after the last stage of lowering the upper punch Century Is significantly different from the usual press in which the upper stamp (matrix) is attached only to the lower surface of the 3d slider.

Device 5 (hereinafter referred to as a device to improve precision stamping) has a principal building, situated between the bottom surface of the slide 3d and the top stamp Century. the Main body includes a disc-shaped, relatively flat base 5A, supporting high pressure portion 5b that is built into the base 5A, and a clamping element 5e, the end surface facing the bottom surface of the slide 3d in this embodiment, and which has a part located under the slider and a built-in supporting high pressure portion 5b so that he can ascend or descend. The outside of the device provides a means 5C is a pressure that allows flow environment designed to maintain high pressure, supporting the high pressure portion 5b and the production environment designed to maintain high pressure, supporting the high pressure part 5b and the tool 5f control, which control is employed, the actuation means 5 C is a pressure. Means 5C is a pressure mounted, for example, on a rack 1b.

Because the base 5A functions as a basis, it is made from thick plates, etc. so that it had a high strength and rigidity. As shown in figure 4, the portion of the base located outside support high pressure portion 5b, is suspended by means of a clamping device 3g mounted on the slide 3d, so that there may be a moderate gap S between the device 5 from the lower surface of the slide 3d in normal condition. Clamping device 3g has cantilever element 31 and a hook, which engages with the hanging part and down from the hanging portion provided on the side end of the base 5A.

Despite the fact that the top stamp In a suspended through the L-shaped means 11 of the suspension is attached to the edge of the base 5A, the upper stamp can be directly attached to the base 5A. In that case, when you use the tool 11 of the suspension rail 110 similar to that shown in figure 4, can be attached so that could not happen any deviation of the top stamp In a horizontal direction.

Supporting high pressure part 5b represents the portion of direct action in this embodiment. As shown in figure 5, supporting high blood pressure h is here formed inside the base 5A as a relatively shallow flat Luggage 5000 and made such the environment is designed to maintain high pressure, directly injected or discharged through the channel 52, made in the proper place of the base 5A. Despite the fact that liquids such as oil and water, generally used as an environment designed to maintain high pressure, the gas is also used depending on the circumstances.

For detailed explanations related to supporting high pressure part 5b, it should be noted that the base 5A combined into one, for example, by fastening the main body 50 and the cover 51 of the locking element. The recess 500 is formed in the main body 50, and the recess opposite the recess 500, formed in the cover 51, resulting in a flat Luggage. The cover 51 is formed with a hole 511, which communicates with the recess, but has a smaller width than the recess. Because the environment is designed to maintain high pressure, directly injected or discharged through the channel 52, as mentioned above, the sealing element 5100, which is in contact with the area of the peripheral wall of the clamping element 5e fixed along the surface of the inner wall of the hole 511.

The presser element 5e is formed from one disc-shaped body (plate), which has almost the same area as the PLO the location area of the workpiece W in this embodiment. Part of the clamping element, located below the clamping end surface 520 inserted into the hole 511 and extends into the recess. The lower end side of the clamping element has a flange 521, which may come in contact with the upper wall of the recess. This flange and overlying the wall is arranged to limit the stroke ST to interval, for example from 1 to 5 mm. Arrows in figure 5 show the state in which the environment is designed to maintain high pressure, is forced into the chamber 5000 channel 52, and as a result, the presser element 5e is and the end surface 520 draws the 3d slider.

In addition, supporting high pressure portion 5b is not limited to a part of direct action. 6 shows an example of part of the indirect action, which is formed by a camera 5000, the boundaries of which are defined by the recess, and the elastic element 5001 built into the camera.

Elastic element 5001 capable of being made of contraction or stretching of the material, such as rubber (rubber). The upper surface of the elastic element 5001 may be attached to the clamping element 5e. In addition, in this embodiment, as the elastic element 5001 is a flat bag, part of which is connected to the channel 52 of the base 5A through junctions. However, the elastic e is ment 5001 is not limited to material provided he expands under the action of pressure medium, designed to maintain high pressure, a pressure, and can be used oligomeric (liquid), pasty or solid rubber.

Means 5C is a pressure is a tool that creates an environment designed to maintain high pressure, and supplying the environment through the channel 52 in supporting high pressure portion 5b and release it to the channel 52 of the supporting increased pressure part 5b. Preferably the tool is used to create pressure made with the possibility of implementing digital control them. Fig.7 shows the means of a pressure type cylinder as an example of means 5 with a pressure. Pipe 540 connected to the output of the cylinder 55 with the pressure side connected with the pipe 54 connected to the channel 52 through the pump 53 and the check valve. Nut 56 is screwed onto the screw portion 5501 piston rod 550, is inserted into the cylinder 55. This nut 56 is itself connected to the rotational element (small pulley or gear) 571 output side of the servo motor 57 through a gear means directly or through the intermediary of the rotary element (pulley or small gears) 560 to slow.

In this type of structure is frequent is the rotation at the output of the servo motor 57 is reduced and transmitted to the nut 56, the piston rod 550 is driven by rotation of the nut 56, and thus, the pressure in the system consisting of pipe 540 and the pipe 54, which are filled with fluid medium from the pump 53 in advance is adjusted in the direction of its increase or towards its reduction. Essentially, when the direction of movement and speed of the piston rod 550 is changed depending on the rotation direction, rotation speed or torque on the shaft of the servo motor 57, the pressure in supporting the high pressure part 5b is changed, and the force with which the presser element 5e is, and the clamping force exerted by the clamping element 5e, change.

Means 5C is a pressure is not limited by means of a cylinder type. Fig shows the means of a pressure pump type. In this type of structure is the internal pressure in the pipe 54 which leads to the channel 52, is adjusted in the direction of its increase or the decrease, when the pump 53 is driven by a servo motor 57. That is, the means of creating pressure includes a pump 53, which is located in the pipe 54 for supplying environment designed to maintain high pressure, such as oil under pressure, supporting the high pressure portion 5b of the tank depending on the direction of rotation and, on the contrary, provide the t return environment, designed to maintain high pressure in the tank from supporting high pressure part 5b and the servo motor 57 which drives the pump in normal or reverse mode and provides power regulation, created supporting high pressure part 5b depending on the direction of rotation, torque and speed control (speed).

In this type of structure presser element 5e rises when the environment is designed to maintain high pressure in the tank, served in supporting high pressure portion 5b through the pipe 54 and the channel 52 of the pump 53 through the actuation of the servo motor 57 in normal (normal) direction. In addition, if the servo motor 57 is powered in the reverse direction, the pump 53 provides suction, designed to maintain high pressure, from the pipe, and the oil contained in supporting high pressure part 5b and the pipe 54 is returned to the tank. Thus, the presser element 5e is omitted. Accordingly, pressing force acting from the side of the clamping element 5e, can be adjusted arbitrarily and accurately by regulating the torque and speed of the servo motor 57.

The tool 5f regulation giving the program is located in the control panel (control panel), etc. at an appropriate location near the bed, racks, etc. to regulate the bringing into action the means 5C is a pressure. The tool 5f pressure regulation, similar to that shown in figure 9, made in the form of a computer that includes a control device similar to the device of the CNC type CNC [computer numerical control]. In addition, to detect strain state of the slide 3d or top of the stamp, similar to that shown in figure 3-6, the sensor 5g attached to the Central area between the bottom surface of the base 5A and the top of the stamp or In a predetermined part, such as a side item, and electrically connected to the control device. As sensor 5g sensors are used, offset, represented by the strain gauge, pressure sensor, etc. that can detect compression and tension. In addition, can be used as a position sensor.

In addition, the sensor 5h pressure is in the system means 5C is a pressure. The output sensor system 5h pressure sensor 5g offset along with output system frequency and torque output of the servo motor 57 is connected to the control device. Types, properties, processing conditions, etc. blanks entered into the computer and stored in the computer, and commands related to the direction of rotation, the frequency of rotation and torque issued from the control unit in response to the calculated appropriate conditions (modes).

In addition, the speed and torque transmitted by the feedback circuit in the control unit from the output system of the servo motor 57. In addition, the actual state of deflection (compression and tension) of the slide 3d or top of the stamp are detected by the sensor 5g, the pressure in the absorber is determined by the sensor 5h pressure, and state of the deflection and the pressure in the absorber is served in the feedback circuit in the control unit. Accordingly, the direction of rotation, speed (speed) and torque, which are sequentially compared with the appropriate values and are adjusted if there is any difference, will be sent as commands to the servo motor 57.

Next will be explained the operation of the above variants of the implementation and effects resulting from its use.

Figa-10D and figa, figw, Fig and Fig show the operation of the press shown in figure 3, in stages, and Fig shows a graph of the stroke and pressure. Figa shows the state before processing. The upper stamp and the bottom stamp And are in ultimate terms-of-way. Not currently occurs no deformation of the slide 3d or top stamp Century. Thus, the sensor 5g displacement device in the solid fuel 5 to improve the accuracy of stamping provides no signal of education deformation, and the pressure in supporting the high pressure part 5b is set in the range from zero to low pressure. There is a gap S between the upper surface 5A of the device 5 increase the accuracy of the punching and the bottom surface of the slide 3d, as shown in figure 4. On the other hand, the workpiece W is set on preventing the wrinkling of the holder 7, and the upper end surface of the spacer block 8 is located almost on the same level as the top surface of the workpiece W.

Further, if the engine 3f trigger to actuate node 3 press to clamp stamp, the 3d slider and the top stamp In the fall, and, as shown in figv, upper stamp hinges on preventing wrinkling of the holder 7 and the spacer block 8. Thus, as shown in figa hung base 5A tightened up, and its upper surface is in contact with the bottom surface 320 of the slide 3d. If the sensor 5g will detect this condition touch (contact), means 5f regulation, which has received the detection signal, outputs a signal, and means 5C is a pressure driven, and thus, the environment is designed to maintain high pressure, is served in supporting high pressure portion 5b through pipe 54 and the channel 52.

Thus, since the pressure in maintaining the th high pressure part 5b rises to a pressure P1, as shown in figv, clamping surface 520 of the clamping element 5e rises to a predetermined height, for example by 1-4 mm from the height level of the upper surface of the base. In the reaction force is applied to the upper stamp Century. This state is shown in figv and Fig. Since uniformly distributed force that resists wrinkling, acts on the entire surface of preventing wrinkling of the holder 7, evenly distributed force that resists wrinkling, will be applied to the workpiece W between the upper stamp and prevent the formation of folds holder 7.

In this state by actuation of the drive mechanism 2b forming node 2 press and retraction Cam lever links 2nd slider 2A raise and lower stamp And rises from the punch plate 4.

That is, since a large gear wheel is driven by means of a leading gear wheel by bringing into action of the 2f engine controlled by a digital system, and one pair of rotating discs 200 and 200 is driven by a small gear located in the center of the large gear, the first arm 201 and 201 are moved in the direction of retraction, and the second lever 202 and the third lever 203 rise. Thus, the origin of the auditing pushing the slider 2A up in the frame, and the bottom stamp And connected to the block in the center of the slide rises. The progress of recovery in the present moment corresponds to the situation of low speed → high speed, as shown in Fig.

In addition, during the lifting of the slider 2A guide pins 21 are moved into the openings 42 of the punch plate 4, and the pins 42 inserted into the holes 42 of the punch plate 4, are popped up, this ensures a stable steady rise.

Essentially, if the slider 2A and the bottom stamp And raised, as shown in figs, bottom stamp And moves forward at the top of the stamp, and performs the specified processing such as stretching. If in the process lifting the lower punch And continues the process of morphogenesis is approaching the end, the presence/absence of deformation on the side of the slider detected by the sensor 5g offset. In that case, if it is discovered that had any deformation with the formation of the bump (compression deformation) on the upper side, means 5C is a pressure driven by a signal from 5f regulation, and the pressure P2 higher than what was at the time the above-mentioned touch, served in supporting high pressure part 5b. In the result, the output effect of the clamping element 5e becomes strong, and as shown with exaggeration in f is g, the pressure on the lower surface of the slider increases.

Thus, as In the upper stamp is directed downwards and the force causing the deformation with the formation of the bump is determined by the strength of the reaction, the deformity is corrected. For this reason, since the 3d slider and the top stamp In adhesion coupled with each other, the strength of plastic deformation can be evenly transferred to the workpiece, and is shaping, exactly corresponding to the cavities of the dies a and b, obtained by forming (stamping) the shape of the piece is very good.

After forming the slider 2A is lowered by the rotation of the servo motor 2f and ensures the return of the bottom of the stamp And the location of the punch plate. At this stage, the load acting upon plastic deformation, is lost in this phase, and the deflection of the slide 3d and the top of the stamp disappears. Thus, the correction becomes unnecessary. Thus, the pressure in supporting the high pressure part 5b is reduced by using the 5s is a pressure, and ensures the return of the clamping element 5e in its original position. In addition, if node 3 press to clamp stamp is raised, as shown in fig.10D, and the 3d slider is stopped at the upper dead point, the molded product w' is extracted, and the process is going to be completed.

As described above, as a first stage pressure, preventing the formation of folds, regulate, through the application of pressure to the clamping element 5e through supporting high pressure part 5b at the moment of touch stamps. Thus, it is possible to eliminate the uneven distribution of power, preventing the wrinkling that occurs as a result of bending, preventing the formation of folds holder, in combination with the fact that there are shock-absorbing rods, and can be created in a state of uniform to prevent the formation of folds. In addition, as a second stage correction of deflection on the side of the slider can be met adequately by the application of pressure greater than the first stage, at the end of the pinch element 5e by supporting high pressure part 5b. In addition, the edit when the shaping is implemented by application of pressure P2 to correct the deflection at the end of the turn. Accordingly, precision stamped parts can be significantly increased.

In addition, the pressure in supporting the high pressure part 5b can be freely adjusted at an arbitrary position of the press with digital control, torque control servo motor and frequency of rotation is possible. For example, if the direction of rotation of the servo motor 57 is changed to the opposite command from the control unit, and the servo motor 57 is powered with a torque and a rotational speed corresponding to the processing conditions, as shown in Fig.7, the piston 550 is given to increase the volume of the cylinder. As shown in Fig, the pump 53 is rotated in the opposite direction to switch on the absorption and release, and the environment, designed to maintain high pressure in the pipe 54 is returned to the tank in accordance with the torque and rotational speed. Therefore, since the pressure in supporting the high pressure part 5b becomes low, the holding force exerted by the clamping element 5e, is also reduced holding force that resists wrinkling, removed, and is manifested cushioning effect corresponding to the hood, for the fluidization of the material. Further, depending on the condition detected by the sensor 5g offset, and the direction of rotation, torque and rotational speed of the servo motor 57, corresponding, regulating the clamping force from the clamping element 5e, in accordance with the state of deflection in the press.

Pressure, prevent the formation of SC is adok, and the pressure for correction of deflection can be adjusted steplessly by means of the torque and rotational speed of the servo motor 57. That is, if the torque on the shaft of the servo motor 57 is reduced, is slow, and if the torque increases are accelerating. If the rotational speed is low, the amount of medium that is designed to maintain high pressure, is returned into the cylinder or tank decreases. Thus, the reduction of pressure in the system, including supporting high pressure portion 5b is small. Accordingly, the pressure in the absorber stamp or pressure for correction of deflection becomes relatively larger than in the case when the rotational speed of the servo motor is large.

Accordingly, the servo motor 57 is driven with the corresponding amount in the process of implementation progress of forming (shaping) in accordance with this property. Thus, the deflection can be adjusted, and you can adjust until evenly distributed clamping force. In addition, the pressure to prevent the formation of folds can be adjusted continuously with high precision, and can perform high-precision stamping, corresponding to the treatment conditions.

As you can see from homatropaire (stamping), the overall height of the press can be reduced through the course of treatment. In addition, the stamping perform the method using the lower drive through the application of the lower molding node 2 press and comply with the same minimum stroke length, and stroke length of morphogenesis. Consequently, it is possible to provide energy savings.

In addition, since the actuation of molding node 2 press transfer a movement in the vertical direction of the slider 2A by means of the eccentric lever links 2E to 2f engine controlled by a digital system as a source of drive force, it is possible to increase speed and high magnification power. In addition, in this embodiment, the drive mechanism 2b is rotary and has no time stop. Thus, it is possible to achieve a large quantum of the issue, almost twice 15-18 strokes per minute at a regular press.

In addition, the drive mechanism 2b for raising or lowering the slider 2A forming the node 2, the press is not limited to the method using a Cam lever links. Fig shows another example. In this example, provided by a pair of right and left knee-lever mechanisms 20 and the motor 21 controlled by ciprowholesale. The bottom stamp And is located on the upper surface of the punch plate 4, and the slider 2A is connected with the lower stamp And the through hole punch plate 4. The knee-lever mechanism 20 consists of a pair of right and left arm elements. Each of the knee-lever mechanism has a first lever element 201, one end of which is connected to the nut 200, which is screwed on the lead screw 205, driven in rotation by a motor 21 controlled by a digital system, the second lever element 202, one end of which is connected with the frame, and the third lever element 203, one end of which is connected with the slide, and the other ends of the lever elements are assembled and connected together through the axes of rotation (hinge).

Figa-16D show the stamping process, which uses a knee-lever mechanism as the drive mechanism 2b, step by step. Because the press and the effects resulting from its use, are the same as described with reference to figa-10D, the description of them is omitted.

Option 2 implementation

Figure 10-21 show an implementation option, which uses a different option as the device 5 to improve the accuracy of stamping. In this embodiment, the base 5A as the main element of the device 5 to improve the accuracy of stamping, as shown in Fig, no different from the base 5A of the first embodiment of implementation in that the base is suspended by means of a clamping device 3g so that it can be formed in the gap S relative to the 3d slider.

In this embodiment, as shown in Fig and 18, a clamping element 5e is divided into the first element e in its Central zone and the second element e that are in place, appropriate to the area to prevent the formation of folds. Supporting high pressure portion 5b is formed by the first supporting high pressure part 5b1, which corresponds to the first element and the second supporting high pressure part 5b2 corresponding to the second element. The tool is a pressure formed by the first tool is a pressure provided to the first supporting high pressure part and the second tool is a pressure provided to the second supporting high pressure part.

The first clamping element a disk-shaped, and any of the structures shown in figure 5 and 6, is used as the first supporting high pressure part 5b1. With regard to the first means s create pressure, and second means s create pressure, then apply any of the options in Fig.7 and 8. The first supporting high pressure portion 5b1 connected with the first is redstem s create pressure through channel 54.

The second clamping element e consists of a set of hydraulic/pneumatic actuators, which are arranged with intervals in this embodiment. Then there are a number of hydraulic/pneumatic cylinders, each of which includes a tubular cylinder that serves as a single supporting high pressure part, and a piston that serves as a single clamping element, arranged in any order in chambers provided with the required spacing of the base 5A. Hydraulic/pneumatic cylinders are provided individually or arranged in any order in the chamber, which is made wide in the form of recesses (grooves). Pistons can be opened in the direction of the upper surface of the base 5A, or cover, or a closing element with a hole installed (installed) on each cylinder. Each of the tubular cylinder of a group of hydraulic/pneumatic cylinders connected by a communication channel (pipe) 542 and is connected with the tool s create pressure through channel 54'.

Figa and figv show another aspect of the second variant implementation. In this case, the second clamping element e has a design in the form of an annular frame, as shown in the view in the plan, and the second under arrivalsa high pressure portion 5b2 performed in the camera view, formed to form an annular groove inside the base 5A. The second supporting high pressure portion 5b2 can be a part of direct action, such as that shown in figure 5, or may be a part of the indirect action, which uses elastic element, as shown in Fig.6.

Since the other configurations are the same as the configuration in the first embodiment, their explanation will be shared with the first embodiment, the same reference position will be given to the same parts.

The second variant implementation also basically has the same effects as the first version of the implementation. However, in the first embodiment, the presser element 5e and supporting high pressure part 5b represent one combination. Hence, it will be created holding force, preventing the formation of folds, and the power for the correction of deflection, which is obtained by the application evenly distributed forces to the entire clamping element 5e.

On the contrary, in the second embodiment, the presser element 5e is divided into the first element e in its Central part or inner part and the second element a on its periphery (corresponding to each side of the product). Respectively supporting the high pressure portion 5b is also divided into first to support the surrounding high pressure portion 5b1 and the second supporting high pressure portion 5b2. Thereby the pressure in each kit is regulated separately by the first means s pressure regulating and second means s pressure regulation.

For this reason, can be set to different pressure to the first supporting high pressure part 5b1 and the second supporting high pressure portion 5b2. Thus, in the first stage (at the moment of contact (enter pin)), corresponding figa, the second clamping element e will be required to move for pressing the peripheral edge of the top edge, if only the second supporting high pressure portion 5b2 increased pressure through the second means s create pressure. Thus, it may be established and adjusted by appropriate holding force that resists wrinkling. Then in the second stage (at the end) the first tool s is a pressure driven to create pressure in the first supporting high pressure part 5b1-level pressure P2. Thus, since the first element e performs a working stroke to create a large force, any deflection of the slide 3d load induced by forging, can be properly adjusted. Fig shows the state at this time. As shown in this drawing, environment, designed on the I maintain high pressure, served in the first supporting high pressure portion 5b1 and the second supporting high pressure portion 5b2 simultaneously from the first means s create pressure, and second means s create pressure to move the first clamping element e and the second clamping element e and to create a clamping force P1+P2 equal or different values, resulting in a pressure dressing. With such a clamp can be provided with more accurate punching and energy saving.

In addition, as shown in Fig, the clamping surface of the first clamping element e and the second clamping element e facing the bottom surface of the slide 3d. However, the invention is not limited to this. The top and bottom of the device can be swapped, and, as shown in Fig, the clamping surface of the first clamping element e and the second clamping element e can be located so that they will be facing the rear surface of the upper stamp C. In this case, part of the Foundation on the outside supporting high pressure part 5b, can be firmly attached to the slider and 3d are combined in one piece with the slide 3d by bolting, etc. In the case of the design Fig first presser element e and the second clamping element e act under the action of the first is supporting the high pressure part and 5b1 the second supporting high pressure portion 5b2, resulting clamping forces will act directly on the rear surface of the upper punch, and is increasing pressure to prevent the formation of folds and correction of deflection.

Option 3 implementation

Fig-26 shows a third variant embodiment of the invention.

In this embodiment, similarly to the second variant implementation, the presser element 5e is the first element a in its Central zone and the second element e that are in place, appropriate to the area to prevent the formation of folds. Supporting high pressure portion 5b is divided into the first supporting high pressure portion 5b1 that corresponds to the first element and the second supporting high pressure portion 5b2 corresponding to the second element. The tool is a pressure divided by the first tool is a pressure provided to the first supporting high pressure part and the second tool is a pressure provided to the second supporting high pressure part. In addition, a second clamping element e consists of a group of pneumatic cylinders placed at intervals.

However, in this third embodiment, the first clamping element e, which represents the first presser element 5e in the Central zone, and the first supporting high pressure portion 5b1 also consist of a set of pneumatic cylinders, which are arranged at intervals.

Then there are a number of pneumatic cylinders, each of which includes a tubular cylinder that serves as a single supporting high pressure part, and a piston that serves as a single clamping element, arranged in any order in chambers provided with the required spacing of the base 5A. Pneumatic cylinders are provided individually or arranged in any order in the chamber, which is made wide in the form of recesses (grooves). Each of the tubular cylinder of a group of pneumatic cylinders connected by a communication channel (pipe) 541 and is connected with the tool s create pressure through channel 54.

In addition, in this embodiment, the same version on Fig, the first clamping element e and the second clamping element e located so that their clamping surface facing toward the top of the stamp. On Fig, in contrast to the above, the first clamping element e and the second clamping element e located so that their clamping surface facing the 3d slider. Fig shows a design on pig in a partially enlarged view. Because the ku other configuration and effects are the same as in the second embodiment, their description is omitted.

In this third embodiment, the first clamping element e and the second clamping element e move together in the end of the turn, and creates a clamping force P1+P2 equal or different size, resulting in a pressure dressing. With such a stamping press can be provided with more accurate punching and energy saving.

In addition, in the case when the clamping elements and supporting high pressure side is designed as a separate structural elements (point group), using groups of pneumatic cylinders like the second option exercise or the third option exercise you can perform precise adjustment of the holding force, which prevents the formation of folds, or power for the correction of deflection. As a way of implementing this group of hydraulic/pneumatic cylinders may be divided into a number of groups, these groups may be joined together by pipelines, and pressure can be connected with each group.

However, in a simpler version, as shown in figa, part 9 for the perception of pressure are placed on the top surface of the top of the stamp, including areas that require pressing through PR is gimnich elements. Part 9 for the perception of pressure are on the same axis as the piston, and perceive clamping force due to the stroke of the pistons. In those places where the clamp is not required, as shown in figv, details for the perception of pressure are not. In other cases, can be placed details for the perception of pressure, which have different thickness in accordance with the degree necessary clamping force.

By performing such designs can provide local regulation restraining forces that prevent the formation of folds, through the use of group pneumatic cylinders with the same technical characteristics without increasing the number of means of creating pressure. For example, in the case where the workpiece W is large, you can just implement a construction in which the clamping force in the straight zone can be created relatively large to obtain a large holding force, preventing the formation of folds, and the clamping force in the corner can be created relatively and slightly less to slightly decrease (attenuation) restraining forces that prevent the formation of creases.

Illustrated press are some examples of the invention, and the invention is not limited to them.

The same eccentric lever is disappearing, in forming the node 2 press can be used for the drive mechanism 3b node 3 press to clamp stamp. In this case, get a rotary press simple steps with the lower drive. Needless to say that the device 5 to improve the accuracy of stamping will be located and fixed between the slide site press for clamping the die and the upper die.

In addition, the device 5 increase precision forming (shaping) can be used regardless of the types of presses can be used for universal mechanical press, hydraulic press, etc, and press with servo and linkage elements shown in the prior art, and can be applied to press simple steps or press double action classification in accordance with the types of drives.

Even in the case of the use for any of them effect pressure equalization large, and the force of the pair of dies and a holding force that resists wrinkling, becoming evenly distributed regardless of the deflection of presses and dies, precision products increases. In addition, achieves large energy savings effect, and, if the authoring tool pressure is also created as in the variants of implementation, a relief valve not used the SJ. Thus, heat is not produced in the hydraulic circuit, and the peak pressure at the time when the slider and the damper stamp collide with each other is low. In addition, the durability and load characteristics are high.

In addition, the invention includes the following content.

1) a Device to improve the accuracy of stamping, which includes located between the die and the bottom surface of the slide, is able to ascend or descend disc-shaped base, supporting a high pressure portion embedded in the base and connected with an external tool for creating pressure, and means for regulating the supply pressure, and a clamping element having a clamping surface located at the bottom surface of the slide or upper surface of the stamp and addressed to support the high pressure side on the side opposite the pressure surface.

2) Method of stamping using a press, comprising placing between the upper die and the lower surface of the press slide device includes a disc-shaped base, supporting a high pressure portion embedded in the base and connected with the outside by means of a pressure, and a clamping element having a clamping surface located at the lower is her surface of the slide or upper surface of the stamp, and the surface opposite to the pressure surface and facing toward supporting high pressure part, designed to maintain high pressure, and adjustment of clamping force by the clamping element, means supporting the high pressure side during pressing of the workpiece, i.e. the pressure P1 on the stage at which the slider is lowered and the upper stamp is in contact with the workpiece, and the pressure P2 on the stage at which the slider has reached the bottom dead point, to [the ratio] P2>P1.

3) Option 2) involves a variation in which the pressure P1 on the stage at which the slider is lowered and the upper stamp came into contact with the workpiece, reported the clamping element only at its peripheral edge corresponding to preventing wrinkling of the holder, and the pressure P2 on the stage at which the slider has reached the bottom dead point, reported the clamping element in its Central part.

1. Press with bottom drive containing preventing the formation of folds ring holder fixedly located on the frame, forming a node of the press, including the lower stamp inside preventing wrinkling of the ring holder, the slider that serves as the backbone of the lower punch, and a drive mechanism located in the frame prednaznachennyi for raising or lowering of the RAM, site press to clamp stamp, including the top stamp with the clamping part, which provides grip when interacting with preventing the formation of folds annular holder at its peripheral edge, the drive mechanism established by the upper part of the press, and flat, raised or lowered through the specified drive mechanism, characterized in that it is provided with a device for application of clamping force to the upper stamp with his back after the last stage of the lowering of the slide and the top of the stamp site press to clamp stamp for accurate punching.

2. The press according to claim 1, characterized in that the device for the application of clamping force to the upper stamp with his back to increase the accuracy of the stamping includes a disc-shaped base, located between the bottom surface of the slide and the top of the stamp, supporting high pressure part, the built-in disc-shaped base, a clamping element having a clamping surface located at the bottom surface of the slide or the rear surface of the upper punch and the surface opposite to the clamping surface and facing toward supporting high pressure part, located outside the Foundation of the creation tool-pressure environment designed to maintain above the aqueous pressure, in supporting high pressure portion and located outside of the base means of the pressure control environment designed to maintain high pressure and supplied to support the high pressure part of the means to create pressure.

3. The press according to claim 2, characterized in that the clamping element includes a disc-shaped element having a size large enough to cover the area, prevent the formation of creases.

4. The press according to claim 2, characterized in that the clamping element is the first element in its Central zone and the second element is in place, appropriate to the area, preventing the formation of folds, supporting high pressure part has a first supporting high pressure portion corresponding to the first element and the second supporting high pressure portion corresponding to the second element, and means for creating pressure comprises first means is a pressure provided to the first supporting high pressure part, and the second means is a pressure provided to the second supporting high pressure part.

5. The press according to claim 4, characterized in that the first element is disk-shaped, and the second element in the top view has a ring shape.

6. The press according to claim 4, characterized in that the first element has the form of a disk iLiberty element and the first supporting high pressure part consist of a set of pneumatic cylinders, which are connected to each other and are located with the required intervals, and the second element and the second supporting high pressure part consist of a set of pneumatic cylinders, which are connected to each other and are located with the required intervals.

7. The press according to any one of claim 2 to 5, characterized in that the supporting increased pressure part consists of a camera body and an elastic element is built into the camera body.

8. The press according to any one of claim 2 to 5, characterized in that the supporting increased pressure part consists of the camera body and the fluid, which filled the camera body.

9. The press according to claim 2, characterized in that it contains a gauge pressure regulation to be submitted to support the high pressure part of the means of creating pressure, which is located between the bottom surface of the slide and the rear surface of the upper stamp site press to clamp stamp or between the base and the rear surface of the upper punch.

10. The press according to claim 2, characterized in that the means for creating pressure has a servo motor as a source of drive force.

11. The press according to claim 1, characterized in that the drive mechanism of the press site for clamping stamp includes a motor controlled by a digital system and lever elements, and the drive mechanism forming press site includes bigatel controlled by a digital system and lever elements.



 

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EFFECT: longer life of die, increased efficiency and quality.

8 cl, 17 dwg

FIELD: metallurgy.

SUBSTANCE: powder is placed in mould, containing the matrix with internal cylinder and pressing and lower punch. The pressing is made with volatile liquid in quantity 0.2 - 3 of volume pressing pore from the side of pressing punch till the end of the process. At the same time the liquid is fed through the holes in the walls of internal cylinder through all side surface of powder. The mould contains the matrix, composed of tight connection of upper and lower parts, upper and lower punch and piston for supplying the liquid. In the upper and lower part of the matrix it is placed the device for feeding the liquid. The device has the hole as cylinder, made of set of conical washer. On the conical surface of washers are made the reach-through canals with angle of inclination 1 - 89°.

EFFECT: this method let to press the inductile powder without plasticizer and realize the steep.

14 cl, 7 dwg, 6 ex

FIELD: powder metallurgy, namely pressing of powder materials at presence of liquid.

SUBSTANCE: method comprises steps of placing powder in press-mold including die, pressing and lower punches; at side of pressing punch introducing to powder volatile liquid in quantity consisting of 0.2 - 3 volumes of pore volume of pressed piece before and during pressing till termination of process; simultaneously with liquid introduction, performing evacuation at side of pressing punch. Method allows press non-plastic powders without plasticizing agents, simultaneously perform pressing and partial removal of plasticizing agent and impregnation. Press-mold includes die, upper and lower punches, device for supplying liquid, evacuation device arranged at side of lower punch.

EFFECT: possibility for extruding non-plastic powders.

7 cl, 3 dwg, 11 ex

FIELD: metallurgy.

SUBSTANCE: invention refers to punching. The installation consists of a puncheon, matrix, and of facility for measuring value of deformation installed inside an element subject to control. During punching value of deformation of the controlled element is measured. Also there is the facility for control of deformation value. It is installed in the element subject to control and it controls value of deformation of the controlled element during punching. Facilities for measuring value of deformation and control over value of deformation are arranged at specified space one from another and from surface of the element subject to control.

EFFECT: reduced surface deformations, increased stability of shape.

16 cl, 25 dwg, 11 tbl, 10 ex

FIELD: plastic working of metals, possibly control systems of forming presses at performing drawing operations.

SUBSTANCE: method comprises steps of clamping edge of sheet blank along its whole diameter between die and holder; acting upon central portion of blank by means of punch; from time moment of beginning blank deformation measuring current values of drawing effort and die movement relative to punch while continuously changing clamping effort of blank edge depending upon measured values according to relation set experimentally.

EFFECT: possibility for making articles with maximum drawing depth at the same other conditions.

1 dwg

FIELD: sheet forming processes and equipment, possibly part drawing procedures and apparatuses.

SUBSTANCE: die set includes punch, die with constriction lip, holder and constriction rib. The last is secured to holder having recess for constriction lip of die. Inner surface of constriction rib serves as wall of recess. Die also has recess for constriction rib; said recess is arranged just behind constriction lip. Constriction rib is arranged with gap relative to constriction lip. Values of said gap is equal to thickness of formed metal while taking into account positive allowance by thickness. Lower edge of constriction rib enters recess of die at limit lower position of die set by value exceeding thickness of formed metal.

EFFECT: enhanced quality of formed parts, lowered metal consumption.

2 dwg

FIELD: sheet forming processes and equipment.

SUBSTANCE: method comprises steps of pressing edge portion of blank and further pulling-in of edge portion of blank to gap between punch and die. According to first variant after pressing edge portion of blank, in central portion of blank recesses are formed at preliminarily defining blank surface due to thinning material. Then at the same transition defined surface of blank is smoothed and pulled-in and simultaneously edge portion of blank is pulled-in to gap between punch and die for forming wall of three-dimensional part. According to second variant edge portion of blank is pressed and further pulled-in to gap between punch and die at press stroke downwards. After pressing edge portion of blank, initial stage of drawing is realized by non-full depth of part. Then recesses are formed in blank central portion and preliminary blank surface is defined due to thinning material. At final stage of drawing defined surface of blank is smoothed and pulled-in and simultaneously edge portion of blank is pulled-in to gap between punch and die for forming wall of three-dimensional part.

EFFECT: lowered labor consumption of drawing process, improved quality of drawn part due to increased limit depth of drawing.

2 cl, 2 dwg

FIELD: plastic working of metals, namely drawing body parts of motor vehicles.

SUBSTANCE: method comprises steps of rigidly clamping blank along opposite edges and simultaneously forming in these edges braking members; then acting upon central part of blank with deforming effort. Braking members are formed in two opposite edges in such a way that they are spaced from contour of blank by predetermined distance at both sides from final points of each forming line.

EFFECT: improved quality of parts due to elimination of blank ruptures, lowered consumption of sheet material for part.

3 dwg

FIELD: cold sheet forming processes and equipment.

SUBSTANCE: method comprises steps of shaping braking members by means of die lip and recess of holder for lip; pressing peripheral part of blank to die with lip; acting by deforming effort onto central portion of blank and simultaneously braking blank portion by means of constriction lip. Cylindrical portion of constriction lip is made in the form of protrusion having desired height and radius at apex equal to radius of die. Upper surface of recess of lip is joined by means of respective radius. Flange of blank is braked at drawing it through gap between cylindrical portion of holder recess for lip and flat portion of surface of pressing lip of die. Minimum gaps are provided between said surfaces; said gaps are equal to initial thickness of blank while taking into account positive allowance for sheet thickness. Flange of blank is also braked due to sign-variable bending of blank flange moved between protrusion of constriction lip and cylindrical portion of holder recess for lip of die .

EFFECT: improved braking degree and tension intensity of blank metal.

3 dwg

FIELD: cold sheet forming processes and equipment.

SUBSTANCE: die set includes punch, die with constriction lips and holder with recesses for lips. Upper surface of constriction lip is equidistant to pressing surface with protrusion near constriction edge of die with height selected according to thickness of initial blank at taking into account positive allowance for sheet thickness and with radius equal to constriction radius of die. Recesses of holder for constriction lips have radius selected according thickness of initial blank at taking into account positive allowance for sheet thickness.

EFFECT: increased braking degree, improved tension intensity of blank metal.

2 dwg

FIELD: plastic working of metals.

SUBSTANCE: apparatus includes housing with cover; mounted in housing punch, die, lower holder arranged along the same axis and upper holder. Upper holder is in the form of disc spring mounted coaxially relative to punch. Guiding ring with stops acting upon upper holder is mounted under cover. In cover there are seats in which members for spring-loading stops are placed. Cover if mounted in housing with possibility of rotation. Pressure ring may be placed between upper holder and stops. The last may be in the form of rollers. Apparatus may include in addition step motion drive mechanism.

EFFECT: simplified design of apparatus.

4 cl, 1 dwg

The invention relates to a sheet punching and can be used for drawing of various sheet materials, in particular for stamping body parts of complex shape for cars, buses, agricultural equipment and t

The invention relates to the field of metal forming and can be used in the manufacture of sheet materials body parts of complex shape

The invention relates to a pressure treatment of metals, in particular of sheet metal in the automotive industry
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