CN210305239U

CN210305239U - High-precision hole flanging die for automobile sheet metal parts

Info

Publication number: CN210305239U
Application number: CN201920561532.0U
Authority: CN
Inventors: 黄维刚; 叶灵剑; 叶林军
Original assignee: Taizhou Huangyan Dedao Mould Co Ltd
Current assignee: Taizhou Huangyan Dedao Mould Co Ltd
Priority date: 2019-04-23
Filing date: 2019-04-23
Publication date: 2020-04-14
Anticipated expiration: 2029-04-23

Abstract

The utility model provides a car sheet metal component high accuracy flanging dies belongs to the mould field. The drawing part comprises a first pressing plate and a first base plate, wherein a drawing upper block is movably connected to the first pressing plate and can move back and forth repeatedly along the axial direction of the first pressing plate, side drawing blocks fixed on the first pressing plate are arranged on two sides of the drawing upper block, the side drawing blocks and the end face, close to the first base plate, of the drawing upper block are connected with each other to form a first drawing face, a second drawing face is arranged on the end face, close to the first pressing plate, of the first base plate, and the flanging part comprises a second pressing plate and a second base plate. The utility model discloses the advantage lies in being equipped with in the device and draws part and turn-ups part, to the higher work piece of shaping lateral wall, will draw and separately go on with the shaping step, prevent that the lateral wall can produce serious crimping, corrugate and resilience etc. unusually, improve work piece quality.

Description

High-precision hole flanging die for automobile sheet metal parts

Technical Field

The utility model belongs to the mould field relates to a car sheet metal component high accuracy flanging dies.

Background

The existing metal flanging die is formed by one-time stretching when a workpiece with a high side wall is manufactured, due to the fact that a flanging is too high, the inward concave curling of the side edge after the flanging is very serious, when the height of the flanging is larger than 40-60 mm, the side wall can generate serious abnormity such as curling, wrinkling and rebounding, and the quality level of the workpiece is low.

For example, chinese patent document discloses a method of flanging a press die [ patent application No.: [ CN201410444900.5] comprising an upper die and a lower die, wherein a stamping part pressing and limiting mechanism is arranged on a lower die base, although the flanging step is completed, when the horizontal height of the flanged edge is higher, serious abnormity such as curling, wrinkling and rebounding is easy to generate.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem, a car sheet metal component high accuracy hole flanging mould is provided.

In order to achieve the above purpose, the utility model adopts the following technical proposal: a high-precision flanging die for an automobile sheet metal part comprises a drawing part and a flanging part, wherein the drawing part comprises a first pressing plate and a first base plate, a drawing upper block is movably connected to the first pressing plate and can move back and forth repeatedly along the axial direction of the first pressing plate, side drawing blocks fixed on the first pressing plate are arranged on two sides of the drawing upper block, the side drawing blocks and the end face, close to the first base plate, of the drawing upper block are connected with each other to form a first drawing face, a second drawing face is arranged on the end face, close to the first pressing plate, of the first base plate, the flanging part comprises a second pressing plate and a second base plate, a first flanging block extending towards the direction of the second base plate and extending out of the second pressing plate is arranged on the second pressing plate, a second flanging block is movably connected to the second base plate, and the second flanging block can move back and forth repeatedly along the axial direction of the second base plate, two sides of the second flanging block are respectively provided with a side flanging block which can move back and forth along the horizontal direction of the second bottom plate.

In the high-precision hole flanging die for the automobile sheet metal part, the first drawing surface and the second drawing surface form an arc curve, the arc curve faces the end face, away from the first pressing plate, of the first bottom plate, and the end face of the side stretching block is inclined.

In the high-precision hole flanging die for the automobile sheet metal part, when the first pressing plate and the first base plate are close to each other, a gap is reserved between the first drawing surface and the second drawing surface and is communicated with an external space.

In the high-precision hole flanging die for the automobile sheet metal parts, each side flanging block is internally provided with a pressing block capable of moving back and forth along the axial direction of the side flanging block, the pressing block is internally and movably connected with a guide rod arranged in the pressing block, and two sides of the second flanging block are respectively provided with a movable flanging part for driving the pressing block and the side flanging block to move.

In foretell car sheet metal component high accuracy turn-ups mould, removal turn-ups part including setting up the first driver in the second bottom plate, the output shaft and the side of first driver turn over the limit piece and be connected, the second bottom plate in still be equipped with the second driver, the output shaft end connection of second driver have a connecting block, the connecting block along the terminal surface in the second bottom plate around removing repeatedly, the connecting block on swing joint have a connecting rod, the tip and the compact heap of connecting rod be connected.

In foretell car sheet metal component high accuracy hole flanging mould, the connecting rod level place, just the connecting rod slide in the connecting block all the time.

In the high-precision hole flanging die for the automobile sheet metal part, when the second pressing plate and the second base plate are close to each other, the side-turning edge block is abutted against and movably connected with the second pressing plate, the pressing block is abutted against and movably connected with the inner end face of the second base plate, the end face of the second pressing plate connected with the side-turning edge block is smooth, and the end face of the second base plate connected with the pressing block is smooth.

In the high-precision hole flanging die for the automobile sheet metal part, the pressing block is internally provided with a groove capable of clamping a workpiece to be processed.

In the high-precision hole flanging die for the automobile sheet metal part, arc-shaped chamfers are arranged on two sides of the end face, in contact with a workpiece to be machined, of the second flanging block.

In the high-precision flanging die for the automobile sheet metal part, the first pressing plate is provided with a third driver capable of driving the drawing upper block to move, and the second base plate is provided with a fourth driver capable of driving the second flanging block to move.

Compared with the prior art, the utility model has the advantages of:

1. the device is internally provided with a drawing part and a flanging part, and the drawing and forming steps are separated for the workpiece with a higher formed side wall, so that the side wall is prevented from generating serious abnormity such as curling, wrinkling and rebounding, and the quality of the workpiece is improved.

2. When the side wall of a workpiece to be processed is stretched by a flanging component in the device, the side flanging block and the pressing block are always attached to the side walls on the two sides of the workpiece after stretching, and the moving distance between the flanging block and the pressing block is shortened according to the stretching deformation of the side walls and the rebounding amount of the side walls, so that the manufacturing speed and the quality of the workpiece are improved.

Drawings

FIG. 1 is a schematic drawing part construction;

fig. 2 is a schematic view of the structure of the cuff member.

In the drawing, a drawing component 10, a flanging component 11, a first pressure plate 12, a first base plate 13, a drawing upper block 14, a side drawing block 15, a first drawing surface 16, a second drawing surface 17, a second pressure plate 18, a second base plate 19, a first flanging block 20, a second flanging block 21, a side flanging block 22, a third driver 23, a movable flanging component 24, a first driver 25, a second driver 26, a pressing block 27, a guide rod 28, a connecting block 29, a connecting rod 30 and a fourth driver 31 are arranged.

Detailed Description

As shown in fig. 1 and fig. 2, a high-precision flanging die for an automobile sheet metal part comprises a drawing component 10 and a flanging component 11, wherein the drawing component 10 comprises a first pressing plate 12 and a first base plate 13, a drawing upper block 14 is movably connected to the first pressing plate 12, the drawing upper block 14 can move back and forth repeatedly along the axial direction of the first pressing plate 12, side drawing blocks 15 fixed on the first pressing plate 12 are arranged on two sides of the drawing upper block 14, the side drawing blocks 15 and the drawing upper block 14 are connected with each other on the end surface close to the first base plate 13 to form a first drawing surface 16, a second drawing surface 17 is arranged on the end surface close to the first pressing plate 12 of the first base plate 13, the flanging component 11 comprises a second pressing plate 18 and a second base plate 19, a first flanging block 20 extending towards the direction of the second base plate 19 and extending out of the second pressing plate 18 is arranged on the second pressing plate 18, and a second flanging block 21 is movably connected to the second base plate 19, the second flanging block 21 can repeatedly move back and forth along the axial direction of the second bottom plate 19, and two side flanging blocks 22 capable of moving back and forth along the horizontal direction of the second bottom plate 19 are respectively arranged on two sides of the second flanging block 21.

The drawing component 10 is used for the first-step drawing of a workpiece to be machined, the workpiece to be machined is placed between a first pressing plate 12 and a first base plate 13, the workpiece to be machined is clamped between the first pressing plate 12 and the first base plate 13, the end face of a side drawing block 15 is abutted against the workpiece to be machined, a drawing upper block 14 collides with the workpiece to be machined back and forth along the axial front-back direction of the first pressing plate 12 to form the workpiece to be machined between a first drawing surface 16 and a second drawing surface 17, the two sides of the workpiece after drawing form bottom edges and side walls, the workpiece after drawing is placed between a second pressing plate 18 and a second base plate 19, side turning blocks 22 on the two sides of a second turning block 21 clamp the bottom edges on the two sides of the workpiece after drawing, the workpiece after drawing is placed between the first turning block 20 and the second turning block 21, the second turning block 21 moves back and forth along the axial direction of the second base plate 19 to repeatedly impact and draw the workpiece after drawing, and the side edge blocks 22 which move back and forth repeatedly along the horizontal direction of the second bottom plate 19 are matched, so that the stretched workpiece stretches the side wall under the condition of ensuring that the bottom edge is not changed, and the side wall is prevented from generating serious abnormity such as curling, wrinkling and rebounding.

The first drawing surface 16 and the second drawing surface 17 are in an arc curve, the arc curve faces the end face of the first bottom plate 13 far away from the first pressing plate 12, and the end face of the side drawing block 15 is in an inclined shape. The first drawing surface 16 and the second drawing surface 17 may be planar, but in this example, since the workpiece to be processed needs to be subjected to stretch forming on the side wall, and since the horizontal height of the side wall is high, in order to prevent serious abnormalities such as curling, wrinkling and springback after the side wall is formed, when the workpiece to be processed is subjected to the first step of drawing, the first drawing surface 16 and the second drawing surface 17 are arc-shaped, so as to provide a certain extension for the first step of drawing on the side wall.

When the first pressing plate 12 and the first base plate 13 are close to each other, a gap is left between the first drawing surface 16 and the second drawing surface 17 and the gap is communicated with the external space.

Each side flanging block 22 is internally provided with a pressing block 27 capable of moving back and forth along the axial direction of the side flanging block 22, the pressing block 27 is internally movably connected with a guide rod 28 arranged in the pressing block 27, and two sides of the second flanging block 21 are respectively provided with a movable flanging component 24 for driving the pressing block 27 and the side flanging block 22 to move. In the process of stretching the side wall of the stretched workpiece, the movable flanging component 24 controls the pressing block 27 to press the bottom edges of the two sides of the stretched workpiece, so that the pressing block 27 moves along with the side flanging block 22 to control the movement of the bottom edges of the two sides of the stretched workpiece, and the pressing block is matched with the second flanging block 21 to repeatedly impact and stretch the side wall of the stretched workpiece.

The movable flanging component 24 comprises a first driver 25 arranged in the second base plate 19, an output shaft of the first driver 25 is connected with the side flanging block 22, a second driver 26 is further arranged in the second base plate 19, an end part of an output shaft of the second driver 26 is connected with a connecting block 29, the connecting block 29 repeatedly moves back and forth along the inner end face of the second base plate 19, a connecting rod 30 is movably connected to the connecting block 29, and an end part of the connecting rod 30 is connected with a pressing block 27. Second driver 26 drive compact heap 27 compress tightly the base on the work piece both sides after drawing and postponing, side turn-ups piece 22 paste the lateral wall on the work piece both sides after tightly drawing and postponing, when second turn-ups piece 21 strikes the work piece after drawing and postponing repeatedly, first driver 25 simultaneous working, drive side turn-ups piece 22 removes around along the second bottom plate 19 horizontal direction repeatedly, and makes side turn-ups piece 22 paste the lateral wall on the work piece both sides after drawing and postponing all the time, along with second turn-ups piece 21 striking once again and slowly stretch its lateral wall through the work piece after drawing and making its lateral wall after prolonging, first driver 25 according to the tensile deflection of lateral wall and the bounce-back volume of lateral wall, change its operating power, make side turn-ups piece 22 displacement shorten, make side turn-ups piece 22 paste the lateral wall on the work piece both sides after tightly drawing all the time. It will be understood by those skilled in the art that the first actuator 25 and the second actuator 26 may be air cylinders or oil cylinders.

The connecting rod 30 is horizontally arranged, and the connecting rod 30 always slides in the connecting block 29. In this example, the bottom edges of the workpiece after being stretched are clamped by the pressing block 27, the side wall of the workpiece after being stretched is stretched by moving the side edge turning block 22, and the pressing block 27 moves back and forth along the horizontal direction of the second bottom plate 19 along with the side edge turning block 22, so that the connecting rod 30 is placed horizontally, and in the process that the pressing block 27 moves along with the side edge turning block 22, the pressing block 27 always clamps the bottom edges of the two sides of the workpiece after being stretched.

When the second pressing plate 18 and the second base plate 19 approach each other, the side edge turning block 22 abuts against and is movably connected with the second pressing plate 18, the pressing block 27 abuts against and is movably connected with the inner end surface of the second base plate 19, the end surface of the second pressing plate 18 connected with the side edge turning block 22 is smooth, and the end surface of the second base plate 19 connected with the pressing block 27 is smooth. In the process of stretching the side wall of the workpiece subjected to stretching, smooth movement is ensured, the impact speed is not reduced due to large friction force, and the forming speed of the workpiece to be processed is not reduced.

A groove capable of clamping a workpiece to be processed is formed in the pressing block 27. The pressing block 27 not only presses the workpiece to be machined, but also pushes the workpiece to be machined through the groove when the side edge turning block 22 moves to press the workpiece to be machined.

And arc-shaped chamfers are arranged on two sides of the end surface of the second flanging block 21, which is in contact with the workpiece to be processed. The chamfers on the two sides of the end surface, which is contacted with the workpiece to be processed, of the second flanging block 21 can also adopt right angles, but the second flanging block 21 quickly impacts the workpiece to be processed, so that the workpiece to be processed is easily cut off, and therefore, the chamfers in the shape of circular arc are arranged on the two sides of the end surface, which is contacted with the workpiece to be processed, of the second flanging block 21.

The first pressing plate 12 is provided with a third driver 23 capable of driving the drawing upper block 14 to move, and the second bottom plate 19 is provided with a fourth driver 31 capable of driving the second flanging block 21 to move. The third actuator 23 and the fourth actuator 31 may be air cylinders or oil cylinders.

The utility model discloses a theory of operation does: the first pressing plate 12 and the first base plate 13 are used for clamping a workpiece to be machined, the end surface of the side extension block 15 is abutted against the workpiece to be machined, the upper extension block 14 is collided with the workpiece to be machined back and forth along the axial front-back direction of the first pressing plate 12, the workpiece to be machined is formed between the first drawing surface 16 and the second drawing surface 17, the bottom edges and the side walls are formed on two sides of the workpiece to be machined, the workpiece to be machined is placed between the second pressing plate 18 and the second base plate 19, the second driver 26 drives the pressing block 27 to press the bottom edges on two sides of the workpiece to be machined, the side edge turning block 22 is tightly attached to the side walls on two sides of the workpiece to be machined, when the second edge turning block 21 repeatedly impacts the workpiece to be machined, the first driver 25 simultaneously works to drive the side edge turning block 22 to repeatedly move back and forth along the horizontal direction of the second base plate 19, and the side edge turning block 22 is tightly attached to the side walls of the workpiece to be machined, with the second flanging block 21 impacting the workpiece after the drawing and slowly stretching the side wall of the workpiece once and again, the first driver 25 changes the working power of the workpiece according to the deformation of the stretched side wall and the rebound quantity of the side wall, so that the moving distance of the side flanging block 22 is shortened, the side flanging block 22 is always attached to the side walls of the two sides of the workpiece after the drawing, and finally the drawing and the stretching of the side walls are completed.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms of the drawing component 10, the flanging component 11, the first pressing plate 12, the first base plate 13, the drawing upper block 14, the side drawing block 15, the first drawing surface 16, the second drawing surface 17, the second pressing plate 18, the second base plate 19, the first flanging block 20, the second flanging block 21, the side flanging block 22, the third driver 23, the movable flanging component 24, the first driver 25, the second driver 26, the pressing block 27, the guide rod 28, the connecting block 29, the connecting rod 30, the fourth driver 31 and the like are used more frequently, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention and should not be interpreted as imposing any additional limitations that are contrary to the spirit of the present invention.

Claims

1. A high-precision flanging die for an automobile sheet metal part comprises a drawing part (10) and a flanging part (11), and is characterized in that the drawing part (10) comprises a first pressing plate (12) and a first base plate (13), a drawing upper block (14) is movably connected to the first pressing plate (12) and can move back and forth repeatedly along the axial direction of the first pressing plate (12), side drawing blocks (15) fixed on the first pressing plate (12) are arranged on two sides of the drawing upper block (14), the side drawing blocks (15) and the end face, close to the first base plate (13), of the drawing upper block (14) are connected with each other to form a first drawing face (16), a second drawing face (17) is arranged on the end face, close to the first pressing plate (12), of the first base plate (13), and the flanging part (11) comprises a second pressing plate (18) and a second base plate (19), the novel pressure plate is characterized in that a first flanging block (20) extending towards the second bottom plate (19) and extending out of the second pressure plate (18) is arranged on the second pressure plate (18), a second flanging block (21) is movably connected onto the second bottom plate (19), the second flanging block (21) can move back and forth repeatedly along the axial direction of the second bottom plate (19), and two side flanging blocks (22) capable of moving back and forth along the horizontal direction of the second bottom plate (19) are respectively arranged on two sides of the second flanging block (21).

2. The high-precision hole flanging die for the automobile sheet metal parts according to claim 1, wherein the first drawing surface (16) and the second drawing surface (17) are in arc curves, the arc curves face the end face of the first base plate (13) far away from the first pressing plate (12), and the end faces of the side stretching blocks (15) are inclined.

3. The high-precision hole flanging die for the automobile sheet metal parts is characterized in that when the first pressing plate (12) and the first base plate (13) are close to each other, a gap is reserved between the first drawing surface (16) and the second drawing surface (17) and the gap is communicated with an external space.

4. The high-precision hole flanging die for the automobile sheet metal parts according to claim 3, characterized in that a pressing block (27) capable of moving back and forth along the axial direction of the side flanging block (22) is arranged in each side flanging block (22), a guide rod (28) arranged in the pressing block (27) is movably connected in the pressing block (27), and two movable flanging parts (24) used for driving the pressing block (27) and the side flanging block (22) to move are respectively arranged on two sides of the second flanging block (21).

5. The high-precision flanging die for the automobile sheet metal parts according to claim 4, wherein the movable flanging component (24) comprises a first driver (25) arranged in a second base plate (19), an output shaft of the first driver (25) is connected with a side flanging block (22), a second driver (26) is further arranged in the second base plate (19), a connecting block (29) is connected to an end portion of an output shaft of the second driver (26), the connecting block (29) repeatedly moves back and forth along an inner end face of the second base plate (19), a connecting rod (30) is movably connected to the connecting block (29), and an end portion of the connecting rod (30) is connected with a pressing block (27).

6. The high-precision hole flanging die for the automobile sheet metal parts is characterized in that the connecting rods (30) are horizontally arranged, and the connecting rods (30) always slide in the connecting blocks (29).

7. The high-precision hole flanging die for the automobile sheet metal parts according to claim 6, characterized in that when the second pressing plate (18) and the second base plate (19) are close to each other, the side flanging blocks (22) are abutted against and movably connected with the second pressing plate (18), the pressing blocks (27) are abutted against and movably connected with the inner end surface of the second base plate (19), the end surfaces of the second pressing plate (18) connected with the side flanging blocks (22) are smooth, and the end surfaces of the second base plate (19) connected with the pressing blocks (27) are smooth.

8. The high-precision hole flanging die for the automobile sheet metal parts as claimed in claim 7, wherein a groove capable of clamping a workpiece to be machined is formed in the pressing block (27).

9. The high-precision hole flanging die for the automobile sheet metal parts as claimed in claim 8, wherein two sides of the end surface of the second flanging block (21) contacting with the workpiece to be machined are provided with circular arc-shaped chamfers.

10. The high-precision flanging die for the automobile sheet metal parts according to claim 9, characterized in that the first pressing plate (12) is provided with a third driver (23) capable of driving the drawing upper block (14) to move, and the second bottom plate (19) is provided with a fourth driver (31) capable of driving the second flanging block (21) to move.