Machining common clamp system for new energy automobile motor end cover

Abstract

The utility model provides a common fixture system for machining of new energy automobile motor end cap, including bottom plate, turnover device and fixture device, turnover device includes turnover drive device, two turnover support and two turnover rocker arm, fixture device includes bridge plate, middle locating pin and a plurality of clamping subassembly, the bridge plate is provided with through ring slot, and the middle locating pin passes through the through ring slot. The clamping assembly comprises an outer positioning pin, a locking block and a hydraulic driving device, the motor end cover is arranged on the bridge plate and can be matched with fixation of the clamp device, so that the motor shell is stably installed on the bridge plate and can be matched with supporting of the supporting block, and then the motor shell can be further stabilized; the fixture device is driven by the turning driving device to integrally turn, and the two axial end faces of the end cover can be precisely machined due to the arrangement of the through ring groove.

Description

Technical Field

[0001] This utility model relates to the field of machining equipment, and in particular to a common fixture system for machining end caps of motors in new energy vehicles. Background Technology

[0002] The basic manufacturing process of the end cap of the drive system of new energy vehicles is as follows: die casting is used to produce part blanks, then high-precision machining is used, and finally surface treatment is carried out. In the machining process, special high-precision tooling is required to position and fix the end cap blank to ensure machining accuracy.

[0003] Due to the rapid pace of product updates and iterations in the new energy industry, and the fact that motor end caps, while similar in overall shape, come in various specifications, each specification requires the creation of corresponding specialized high-precision machining fixtures, resulting in high costs and long development cycles. Existing fixtures have clamping devices that directly contact the machined areas of the product, posing a risk of damaging the product. Furthermore, they cannot complete the machining process in one go, leading to accumulated errors and affecting the yield rate. Additionally, insufficient or uneven clamping force can cause vibration during machining, impacting the actual machining accuracy. Utility Model Content

[0004] The purpose of this utility model is to provide a common fixture system for machining the end cap of a new energy vehicle motor.

[0005] To achieve the purpose of this utility model, this utility model provides a common fixture system for machining end caps of new energy vehicle motors, including a base plate, a flipping device, and a fixture device. The flipping device includes a flipping drive device, two flipping brackets, and two flipping rocker arms. The two flipping brackets are vertically mounted on the base plate, and one flipping rocker arm is rotatably mounted on one flipping bracket around a horizontal axis. The flipping drive device is connected to the flipping rocker arm and drives the flipping rocker arm to rotate. The fixture device includes a bridge plate, a central positioning pin, and multiple clamping components. The bridge plate extends horizontally and has a through-ring groove extending vertically. The central positioning pin extends vertically and is located in the middle of the bridge plate. The through-ring groove is located on the outer periphery of the central positioning pin, and the multiple clamping components are located on the outer periphery of the through-ring groove. The clamping components include an outer positioning pin, a locking block, and a hydraulic drive device. The locking block has a pressing end and a first driving end at both ends. The outer positioning pin extends vertically and is mounted on the bridge plate. The hydraulic drive device is connected to the first driving end and drives the pressing end to move vertically toward or away from the outer positioning pin.

[0006] A further embodiment includes a clamping assembly that also includes a fixed plate and a hinged swing arm. The fixed plate is fixedly mounted on the bridge plate, and the locking block has a first hinged end between the pressing end and the first driving end. The hinged swing arm is hinged between the first hinged end and the fixed plate, and the pressing end moves vertically around the first hinged end.

[0007] A further proposed solution is that the external positioning pin includes a first fixed post and a first insert post extending vertically. The diameter of the first fixed post is larger than the diameter of the first insert post. The first fixed post is fixedly connected to the bridge plate, and the end of the first insert post faces the pressing end.

[0008] A further proposed solution is to have an arc-shaped notch on the outer positioning pin, which passes through the first fixing post and the first insert post, and is located at the outer edge of the through-ring groove.

[0009] A further proposed solution is that the central positioning pin includes a second fixing post and a second insert post that extend vertically and are connected together. The diameter of the second fixing post is larger than the diameter of the second insert post. The second fixing post is fixedly connected to the bridge plate, and the end of the second insert post faces the pressing end.

[0010] A further embodiment is that the clamping device includes a support assembly located on the outer periphery of the through-ring groove. The support assembly includes a support block and a support drive device, which is connected to the support block and drives the support block to move vertically.

[0011] A further embodiment is that the support block extends horizontally and has a support end and a second hinge end at both ends. A second drive end is provided between the support end and the second hinge end. The support assembly also includes a support column, which extends vertically and is provided on the bridge plate. The upper end of the support column is hinged to the second hinge end. A support drive device is provided on the bridge plate and is connected to the second drive end.

[0012] The beneficial effects of this utility model are that by setting the motor end cover on the bridge plate and cooperating with the clamping device for fixation, the middle position of the end cover is first positioned by the central positioning pin, and the outer position of the end cover is positioned by the outer positioning pin located on the outer periphery of the through-ring groove. Then, the locking block is driven by the hydraulic drive device to clamp and fix the outer periphery, thereby making the motor housing firmly installed on the bridge plate. With the support of the support block, the motor housing can be further stabilized. Furthermore, the bridge plate is installed between two tilting rocker arms, and then the clamping device is tilted as a whole under the drive of the tilting drive device. Due to the setting of the through-ring groove, the two axial end faces of the end cover can be precisely machined. Attached Figure Description

[0013] Figure 1 This is a structural diagram of an embodiment of the shared jig system for machining according to this utility model.

[0014] Figure 2 This is a structural diagram of an embodiment of the shared jig system for machining according to this utility model from another perspective.

[0015] Figure 3This is a structural diagram of the fixture device in an embodiment of the shared fixture system for machining of this utility model.

[0016] Figure 4 This is a structural diagram of the fixture device in an embodiment of the shared fixture system for machining of this utility model from another perspective.

[0017] Figure 5 This is a structural diagram of the shared jig system for machining according to this utility model when clamping the motor end cover.

[0018] Figure 6 This is a structural diagram of the shared machining fixture system of this utility model, viewed from the bottom side when clamping the motor end cover.

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0020] Reference Figures 1 to 6 The machining common fixture system includes a base plate 11, a flipping device and a fixture device 2. The flipping device includes a flipping drive device 13, two flipping brackets 12 and two flipping rocker arms 14. The two flipping brackets 12 are vertically arranged on the base plate 11 and are located on the horizontal sides of the base plate 11 respectively. One flipping rocker arm 14 is rotatably arranged on one flipping bracket 12 about the horizontal axis and extends vertically and is connected to the inner side of the flipping bracket 12. The flipping drive device 13 is fixed on one of the flipping brackets 12 and is connected to the flipping rocker arm 14 on the same side and drives the flipping rocker arm 14 to rotate.

[0021] The clamping device 2 includes a bridge plate 21, a central positioning pin 22, and multiple clamping components 23. The bridge plate 21 extends horizontally and has a through annular groove 211 extending vertically. The central positioning pin 22 extends vertically and is located in the middle of the bridge plate 21. The through annular groove 211 is located on the outer periphery of the central positioning pin 22. The multiple clamping components 23 are located on the outer periphery of the through annular groove 211. The through annular groove 211 is not arranged in a 360° circumferential manner, but rather the curvature of the through annular groove 211 is greater than 180°.

[0022] The clamping assembly 23 includes an outer positioning pin 231, a locking block 235, a hydraulic drive device 239, a fixing plate 251, and a hinged swing arm 250. The locking block 235 has a pressing end 236 and a first driving end 238 at both ends. The outer positioning pin 231 extends vertically onto the bridge plate 21. The hydraulic drive device 239 is connected to the first driving end 238 and drives the pressing end 236 to move vertically toward or away from the outer positioning pin 231. The fixing plate 251 is fixedly mounted on the bridge plate 21. The locking block 235 has a first hinge end 237 between the pressing end 236 and the first driving end 238. The hinged swing arm 250 is hinged between the first hinge end 237 and the fixing plate 251. Driven by the hydraulic drive device 239, the pressing end 236 is then driven to move vertically around the first hinge end 237.

[0023] The external positioning pin 231 includes a first fixing post 232 and a first insert post 233 extending and connected in a vertical direction. The diameter of the first fixing post 232 is larger than the diameter of the first insert post 233. The first fixing post 232 is fixedly connected to the bridge plate 21, and the end of the first insert post 233 faces the pressing end 236.

[0024] Of course, the positions of the outer positioning pin 231 and the locking block 235 can be adjusted according to different models of motor end covers. The bridge plate 21 is provided with multiple fixing holes, so it can be adapted to multiple models. Among them, one of the outer positioning pins 231 can be provided with an arc-shaped notch 234. The arc-shaped notch 234 passes through the first fixing post 232 and the first insert post 233. The arc-shaped notch 234 is located at the outer edge of the through annular groove 211, thereby avoiding the motor end cover 10.

[0025] The central positioning pin 22 includes a second fixing post 221 and a second insert post 222 that extend vertically. The diameter of the second fixing post 221 is larger than the diameter of the second insert post 222. The second fixing post 221 is fixedly connected to the bridge plate 21, and the end of the second insert post 222 faces the pressing end 236.

[0026] The clamping device 2 also includes a support assembly 24, which is located on the outer periphery of the through annular groove 211. The support assembly 24 includes a support column 245, a support block 241, and a support drive device 246. The support drive device 246 is connected to the support block 241. Specifically, the support block 241 extends horizontally and has a support end 242 and a second hinge end 244 at both ends. A second drive end 243 is provided between the support end 242 and the second hinge end 244. The slide is arranged in a horizontally extending groove. The support column 245 extends vertically and is set on the bridge plate 21. The upper end of the support column 245 is hinged to the second hinge end 244. The support drive device 246 is set on the bridge plate 21 and is connected to the second drive end 243. That is, the drive end of the support drive device 246 is hinged to the slide by a pin, so that the drive end and the pin can move along the slide. Then, under the drive of the support drive device 246, the drive support block 241 moves vertically.

[0027] The working principle of the shared fixture system for machining is as follows:

[0028] Rotate the tilting arm 14 to place the bridge plate 21 in a horizontal position. Select different clamping devices 2 according to the dimensions of the end cover, adjust the hydraulic clamping height, and ensure the locking block 235 is in the open state to ensure the end cover can be smoothly placed on the bridge plate 21. Align the positioning hole in the motor end cover 10 with the previously selected clamping device 2 to accurately place the motor end cover 10 on the tooling. This includes aligning with the central positioning pin 22 and the central hole of the motor end cover 10, and aligning the outer protrusion 101 of the motor end cover 10 with the first insert 233. This ensures the motor end cover 10 is accurately placed on the tooling. After the tooling is in place, the locking block 235 clamps the motor end cover 10. Since multiple clamping devices 2 are evenly distributed around the end face of the motor end cover 10, and the support column 245 also supports the outer protrusion 102 of the motor end cover 10, the clamping force of the tooling can be evenly distributed on the end cover. In addition, the clamping structure on the tooling does not directly contact the area of ​​the end cover to be processed, avoiding product damage and interference with the tool processing path, so that the end face of the end cover can be clamped in one go. Furthermore, the through annular groove 211 facilitates the processing of the back structure of the end cover and timely discharge of waste during processing.

[0029] When changing to different models of end caps, you only need to change the specifications or position of the locating pins or clamping devices to adapt to the different structural dimensions and shapes of the end caps, so that one set of tooling fixtures can be used to adapt to multiple end caps.

[0030] As can be seen from the above, by setting the motor end cover on the bridge plate and using the clamping device for fixation, the middle position of the end cover is first positioned by the central positioning pin, and the outer circumference position of the end cover is positioned by the outer positioning pin located on the outer circumference of the through-ring groove. Then, the locking block is driven by the hydraulic drive device to clamp and fix the outer circumference position, thereby making the motor housing firmly installed on the bridge plate. With the support of the support block, the motor housing can be further stabilized. Furthermore, the bridge plate is installed between two tilting rocker arms, and under the drive of the tilting drive device, the entire clamping device can be tilted. Due to the setting of the through-ring groove, the two axial end faces of the end cover can be precisely machined.

Claims

1. A machining common fixture system for a new energy automobile motor end cover, characterized in that, The machining common clamp system comprises a base plate, a turnover device and a clamp device. The turnover device comprises a turnover driving device, two turnover supports and two turnover rocker arms, the two turnover supports are arranged on the base plate in a vertical direction, one turnover rocker arm is arranged on one turnover support in a horizontal axis rotation manner, the turnover driving device is connected with the turnover rocker arm and drives the turnover rocker arm to rotate. The clamp device comprises a bridge plate, a middle positioning pin and a plurality of clamping assemblies, the bridge plate extends in a horizontal direction and is provided with a through ring groove in a vertical direction, the middle positioning pin extends in a vertical direction and is arranged at the middle of the bridge plate, the through ring groove is located at the outer periphery of the middle positioning pin, and the plurality of clamping assemblies are located at the outer periphery of the through ring groove. The clamping assembly comprises an outer positioning pin, a locking block and a hydraulic driving device, the locking block is provided with a pressing end and a first driving end at both ends respectively, the outer positioning pin extends in a vertical direction and is arranged on the bridge plate, the hydraulic driving device is connected with the first driving end, and the hydraulic driving device drives the pressing end to move towards or away from the outer positioning pin in a vertical direction.

2. The machining common clamp system according to claim 1, wherein: The clamping assembly further comprises a fixed plate and a hinged swing arm, the fixed plate is fixedly installed on the bridge plate, the locking block is provided with a first hinged end between the pressing end and the first driving end, the hinged swing arm is hinged between the first hinged end and the fixed plate, and the pressing end moves in a vertical direction around the first hinged end.

3. The machining common clamp system according to claim 1, wherein: The outer positioning pin comprises a first fixed column and a first insertion column connected in a vertical direction, the diameter of the first fixed column is larger than that of the first insertion column, the first fixed column is fixedly connected with the bridge plate, and the end of the first insertion column is towards the pressing end.

4. The machining common clamp system according to claim 3, wherein: The outer positioning pin is provided with an arc-shaped notch, the arc-shaped notch passes through the first fixed column and the first insertion column, and the arc-shaped notch is located at the outer edge of the through ring groove.

5. The machining common clamp system according to claim 1, wherein: The middle positioning pin comprises a second fixed column and a second insertion column connected in a vertical direction, the diameter of the second fixed column is larger than that of the second insertion column, the second fixed column is fixedly connected with the bridge plate, and the end of the second insertion column is towards the pressing end.

6. The machining common clamp system according to any one of claims 1 to 5, wherein: The clamp device comprises a support assembly, the support assembly is located at the outer periphery of the through ring groove, and the support assembly comprises a support block and a support driving device, the support driving device is connected with the support block and drives the support block to move in a vertical direction.

7. The machining common clamp system according to claim 6, wherein: The support block extends in a horizontal direction and is provided with a support end and a second hinged end at two ends respectively, the support block is provided with a second driving end between the support end and the second hinged end, the support assembly further comprises a support column, the support column extends in a vertical direction and is arranged on the bridge plate, an upper end of the support column is hinged with the second hinged end, the support driving device is arranged on the bridge plate, and the support driving device is connected with the second driving end.

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