Differential housing punching tool

Abstract

The utility model discloses a differential mechanism shell punching tool relates to tool equipment technical field, it includes upper die holder, lower die holder, the upper die holder is fixed with the guide column on, the lower die holder is provided with the guide bushing of adaptation with guide column on, the upper die holder is provided with the stamping unit, the stamping unit includes the punch positioning column of fixed connection upper die holder, a plurality of tool punches are fixed with punch positioning column bottom, and the position of every tool punch corresponds with the bolt hole of differential shell body one to one respectively, the lower die holder is provided with workpiece positioning unit and workpiece clamping unit, and under the action of workpiece clamping unit, the differential shell body is limited in workpiece positioning unit. By this, the utility model discloses through setting up the tool punch corresponding with bolt hole, punches in place one time, thereby improves the qualified rate of product.

Description

Technical Field

[0001] This utility model relates to the field of tooling equipment technology, specifically to a differential housing punching tool. Background Technology

[0002] The differential plays a vital role in vehicle cornering. The differential housing is generally made by precision casting. The cast blank will have burrs and flash, especially around the bolt holes. These must be processed before being transported to the next processing stage.

[0003] Traditionally, burrs and flash are removed manually. Workers first fix the shell and then use pneumatic tools to grind it. Because the diameters of the two ends of the shell are different, the shell tends to tilt when it is clamped and fixed, as pressure is applied to one side. During grinding, dust and noise pollution are severe. Moreover, because different grinding tools are used, the operators' operating methods and force will also vary, which often results in incomplete grinding or excessive grinding size. This is not only inefficient but also affects the pass rate of subsequent products. Utility Model Content

[0004] To overcome the above-mentioned defects, the purpose of this utility model is to provide a differential housing punching fixture, which punches the housing in one go by setting a tooling punch corresponding to the bolt hole, thereby improving the product qualification rate.

[0005] To achieve the above objectives, this utility model provides a differential housing punching fixture, comprising: an upper die base and a lower die base; a guide post is fixedly mounted on the upper die base, and a guide sleeve adapted to the guide post is provided on the lower die base; a stamping unit is provided on the upper die base, the stamping unit including a punch positioning post fixedly connected to the upper die base, and a plurality of tooling punches are fixedly mounted at the bottom of the punch positioning post; and the position of each tooling punch corresponds one-to-one with the bolt holes of the differential housing body; a workpiece positioning unit and a workpiece clamping unit are provided on the lower die base, and under the action of the workpiece clamping unit, the differential housing body is confined to the workpiece positioning unit.

[0006] Preferably, the workpiece positioning unit includes a support block and a positioning block. A bolt fixing platform is provided on the housing body, and the bottom of the bolt fixing platform abuts against the support block. A positioning groove is provided on the positioning block, and one side of the bolt fixing platform abuts against the positioning groove.

[0007] Preferably, the workpiece clamping unit includes a power cylinder and a support base. The cylinder body of the power cylinder is fixedly connected to the lower mold base. The support base is also provided with a guide hole. A workpiece pressing block is slidably disposed in the guide hole. The piston rod of the power cylinder penetrates the lower mold base and is fixedly connected to the rear end of the workpiece pressing block.

[0008] Preferably, the contact surface between the workpiece pressure block and the differential shell body is wedge-shaped.

[0009] Preferably, there are two workpiece clamping units, symmetrically arranged on both sides of the lower mold base.

[0010] Preferably, a safety pin is also provided between the upper mold base and the lower mold base, and the safety pin is fixed to the lower mold base.

[0011] The beneficial technical effects achieved by this utility model after adopting the above technical solution are as follows:

[0012] 1. An upper die base and a lower die base are set up. By punching the upper die base to the lower die base, multiple tooling punches can punch and remove all the bolt holes of the housing body at one time. In the above process, in addition to ensuring the position of the tooling punches, it is only necessary to control the moving distance between the upper die base and the lower die base. This can greatly avoid overcutting or inadequate grinding, resulting in high processing efficiency and guaranteed yield.

[0013] 2. Due to the inclusion of a workpiece positioning unit and a workpiece clamping unit, the workpiece positioning unit includes a support block and a positioning block, while the workpiece clamping unit includes a power cylinder, a support base, and a workpiece clamping block. The support block is used to support the differential shell body, and the positioning groove on the positioning block is used to ensure the accuracy of the position. After positioning is completed, the workpiece clamping block is driven by the power cylinder to temporarily fix the differential shell body. Since both sides of the differential shell body are subjected to force simultaneously during fixing, it will be more stable. During the entire punching process, it will not tilt due to unbalanced force, resulting in higher efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram showing the overall usage state of this utility model;

[0015] Figure 2 This is a schematic diagram showing the positions of the lower mold base and the differential shell body of this utility model;

[0016] Figure 3 This is a schematic diagram showing the positions of the upper mold base and the tooling punch of this utility model;

[0017] Figure 4 This is a schematic diagram of the lower mold base behind the concealed differential shell body in this utility model;

[0018] Figure 5 yes Figure 4 The front view;

[0019] Figure 6 This is a reference diagram showing the position of the differential shell body in this utility model;

[0020] In the diagram,

[0021] 1. Upper mold base; 11. Guide pillars;

[0022] 2. Lower mold base; 21. Guide sleeve; 22. Safety pin;

[0023] 3. Stamping unit; 31. Punch positioning post; 32. Tooling punch;

[0024] 4. Workpiece positioning unit; 41. Support block; 42. Positioning seat; 421. Positioning groove;

[0025] 5. Workpiece clamping unit; 51. Power cylinder; 52. Support base; 53. Workpiece pressure block;

[0026] 6. Shell body; 61. Bolt fixing platform; 62. Bolt hole. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0028] See Figures 1-6 This utility model provides a differential housing punching fixture, including: an upper die base 1 and a lower die base 2; a guide post 11 is fixed on the upper die base 1, and a guide sleeve 21 adapted to the guide post 11 is provided on the lower die base 2; under the drive of other auxiliary power equipment, the guide post 11 moves downward along the guide sleeve 21, which is a common existing technology in molds.

[0029] The upper die base 1 is provided with a stamping unit 3, which includes a punch positioning post 31 fixedly connected to the upper die base 1. Several tooling punches 32 are fixedly provided at the bottom of the punch positioning post 31. The position of each tooling punch 32 corresponds one-to-one with the bolt hole 62 of the housing body 6. The lower die base 2 is provided with a workpiece positioning unit 4 and a workpiece clamping unit 5. Under the action of the workpiece clamping unit 5, the housing body 6 is limited to the workpiece positioning unit 4.

[0030] To ensure successful stamping in one go, a suitable tooling punch 32 needs to be selected based on the specific model of the housing body 6, ensuring that the punching position of the tooling punch 32 corresponds exactly to the bolt hole 62 of the housing body 6. After placing the housing body 6 in the designated position, it is first positioned by the workpiece positioning unit 4, generally ensuring coaxiality first. Then, using the positioning groove 421 and positioning seat 42, the housing body 6 is placed on the support block 41. Finally, the workpiece clamping unit 5 temporarily fixes the housing body 6. There are many types of workpiece clamping units 5; in addition to the cylinder or electric cylinder described in this utility model, various types of pneumatic or mechanical clamps can also be used.

[0031] The workpiece positioning unit 4 of this utility model includes a support block 41 and a positioning block. A bolt fixing platform 61 is provided on the differential housing body 6, and the bottom of the bolt fixing platform 61 abuts against the support block 41. A positioning groove 421 is provided on the positioning block, and one side of the bolt fixing platform 61 abuts against the positioning groove 421. The bolt fixing platforms 61 on the differential housing body 6 are inserted into the positioning groove 421 to achieve side positioning of the differential housing body 6. The bolt fixing platforms 61 at the bottom of the differential housing body 6 are placed on the support block 41 and the positioning base 42, preventing over-positioning. When the workpiece clamping unit 5 clamps and fixes the differential housing body 6, tilting will not occur.

[0032] The workpiece clamping unit 5 of this utility model includes a power cylinder 51 and a support base 52. The cylinder body of the power cylinder 51 is fixedly connected to the lower die base 2. The support base 52 is also provided with a guide hole, and a workpiece pressing block 53 is slidably disposed in the guide hole. The piston rod of the power cylinder 51 penetrates the lower die base 2 and is fixedly connected to the rear end of the workpiece pressing block 53. The power cylinder 51 is generally preferably a pneumatic cylinder or an electric cylinder. The piston rod of the power cylinder 51 is connected to the workpiece pressing block 53. The contact surface between the workpiece pressing block 53 and the differential housing body 6 is wedge-shaped. Due to the limiting effect of the guide hole, the workpiece pressing block 53 moves in a straight line. After extending a certain distance, the wedge-shaped workpiece pressing block 53 can effectively squeeze and fix the side of the differential housing body 6, ensuring that there is no shaking during the entire punching process. To further ensure the balanced force on the workpiece, the workpiece clamping unit 5 of this utility model is two or four, with two being preferred. They are symmetrically arranged on both sides of the lower mold base 2. The piston rods of the power cylinders 51 on both sides need to extend or retract synchronously to ensure that the housing body 6 does not shift.

[0033] A safety pin 22 is also provided between the upper mold base 1 and the lower mold base 2 of this utility model. The safety pin 22 is fixed to the lower mold base 2. The safety pin 22 is generally two steel columns, and its main function is to prevent the upper mold base 1 and the lower mold base 2 from being too tightly fitted together and unable to separate, thus playing a safety role and avoiding tooling accidents. The moving distance of the upper mold base 1 is based on a set operation and generally will not directly collide with the safety pin 22. A protective baffle (not shown) is generally also provided on the side away from the safety pin 22 to protect the operator's safety.

[0034] Of course, there may be other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.

Claims

1. A differential housing punching fixture, comprising: An upper mold base and a lower mold base; a guide post is fixedly mounted on the upper mold base, and a guide sleeve adapted to the guide post is provided on the lower mold base; characterized in that, The upper die base is provided with a stamping unit, the stamping unit includes a punch positioning post fixedly connected to the upper die base, and a plurality of tooling punches are fixedly provided at the bottom of the punch positioning post; and the position of each tooling punch corresponds one-to-one with the bolt hole of the housing body. The lower mold base is provided with a workpiece positioning unit and a workpiece clamping unit. Under the action of the workpiece clamping unit, the housing body is confined to the workpiece positioning unit.

2. The differential housing punching fixture according to claim 1, characterized in that, The workpiece positioning unit includes a support block and a positioning block. A bolt fixing platform is provided on the housing body, and the bottom of the bolt fixing platform abuts against the support block. A positioning groove is provided on the positioning block, and one side of the bolt fixing platform abuts against the positioning groove.

3. The differential housing punching fixture according to claim 2, characterized in that, The workpiece clamping unit includes a power cylinder and a support base. The cylinder body of the power cylinder is fixedly connected to the lower mold base. The support base is also provided with a guide hole. A workpiece pressing block is slidably disposed in the guide hole. The piston rod of the power cylinder penetrates the lower mold base and is fixedly connected to the rear end of the workpiece pressing block.

4. The differential housing punching fixture according to claim 3, characterized in that, The contact surface between the workpiece pressure block and the differential shell body is wedge-shaped.

5. The differential housing punching fixture according to claim 4, characterized in that, There are two workpiece clamping units, which are symmetrically arranged on both sides of the lower mold base.

6. The differential housing punching fixture according to claim 1, characterized in that, A safety pin is also provided between the upper mold base and the lower mold base, and the safety pin is fixed to the lower mold base.

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