Hybrid transmission welding fixture

Abstract

The application belongs to the technical field of welding fixtures, and discloses a hybrid transmission case welding fixture, which comprises a base and a driving mechanism installed on the base. A three-jaw chuck for clamping a hybrid transmission case shell to be welded is installed on one side of the driving mechanism. A fixture module is slidably connected to the sidewall of the driving mechanism through a plurality of straight grooves. The fixture module comprises a hydraulic lifting module installed in the straight groove. The fixture module further comprises a first clamping plate arranged on one side of the driving mechanism and connected to a positioning assembly at one end. The positioning assembly and the first clamping plate are matched to pull the positioning block by the output end of the hydraulic lifting module, drive the plate body and the abutment to fit the hybrid transmission case shell to be welded, and clamp the hybrid transmission case shell. The position state of the plurality of plate bodies is adjusted back and forth to greatly reduce the situation that the existing fixture cannot better adapt to the hybrid transmission case shell due to the fixed type, thereby reducing the clamping force and improving the overall applicability and work efficiency.

Description

Technical Field

[0001] This invention belongs to the field of welding fixture technology, specifically a welding fixture for a hybrid transmission. Background Technology

[0002] Hybrid transmission welding fixtures are specialized tooling used in the welding process between the hybrid transmission housing and internal components. They are primarily used for precise positioning and reliable clamping of welded parts such as the transmission housing, end covers, and flanges. By constraining the workpiece's degrees of freedom, they prevent displacement and misalignment caused by thermal deformation and vibration during welding, ensuring weld position accuracy and weld formation quality. Simultaneously, they are compatible with automated welding cycles, improving clamping efficiency and product consistency. They are key process equipment in hybrid transmission welding to ensure dimensional accuracy, reduce scrap rates, and meet the demands of mass production.

[0003] Existing hybrid transmission welding fixtures mostly employ a fixed structure, with non-adjustable clamping position and stroke, and can only accommodate a single type of transmission housing. When faced with hybrid transmissions of different models, sizes, and shapes, adaptive clamping and positioning are impossible, requiring frequent changes to corresponding dedicated fixtures. This not only increases fixture inventory and management costs but also prolongs setup and changeover time. The fixed design is ill-suited to the trend of multi-category, small-batch production of hybrid transmissions, exhibiting poor versatility and adaptability, thus hindering the flexibility and efficiency improvement of welding production lines. Therefore, improvements are needed. Summary of the Invention

[0004] To address the problems mentioned in the background section, the present invention provides a welding fixture for a hybrid transmission.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a hybrid transmission welding fixture, comprising a base and a drive mechanism mounted on the base, wherein a three-jaw chuck for clamping the hybrid transmission housing to be welded is mounted on one side of the drive mechanism, and a fixture module is slidably connected to the side wall of the drive mechanism through multiple straight slots, the fixture module including a hydraulic lifting module installed inside the straight slots, and further comprising: The first clamping plate is located on one side of the drive mechanism, and one end is connected to a positioning component. The power assembly is slidably connected inside the first clamping plate; The second clamping plate is installed on the side of the power assembly away from the first clamping plate; The first clamping plate includes a plate body, which is provided with multiple sets of clamps. Both ends of the side wall of the plate body are rotatably connected to abutments via a first rotating shaft. The power assembly includes a crossbar slidably connected inside the plate body. One end of the crossbar extends and passes through to the outer end of the plate body. A second electric telescopic rod for pushing the second clamping plate to rotate is fixed to the top end of the crossbar.

[0006] Preferably, the positioning component includes a plurality of annularly distributed positioning blocks that are slidably connected to a straight groove on the side wall of the drive mechanism, and the bottom end of the positioning block is fixedly connected to the hydraulic lifting module.

[0007] Preferably, a hollow positioning disk is bolted to the side of the positioning block away from the driving mechanism, and a first roller shaft for sliding and limiting the plate is installed in the middle of the inner cavity of the hollow positioning disk.

[0008] Preferably, a spring plate is sleeved at the rotating end of the abutment and the first rotating shaft to allow the abutment to elastically return to its original position; The two abutments located on the same side are arranged in a figure-eight shape, and the lower end of the abutments is provided with a rubber sheet.

[0009] Preferably, a first electric telescopic rod located in the inner cavity of the plate is installed at one end of the crossbar, and the output end of the first electric telescopic rod is fixedly connected to the end of the crossbar; The end of the crossbar away from the first electric telescopic rod is hinged with a locking block; The bottom of the plate is provided with multiple layers of rubber gaskets.

[0010] Preferably, the end of the locking block away from the crossbar is slidably engaged with a locking slot, and the locking slot is slidably connected to a second roller shaft mounted on the second clamping plate.

[0011] Preferably, the second clamping plate includes a square plate body fixedly connected to the second roller shaft, and a positioning frame is installed on one side of the top surface of the square plate body. The positioning frame is fixedly connected to a second rotating shaft that is slidably connected to the output end of the second electric telescopic rod.

[0012] Preferably, a vertical rod is movably connected to one side of the inner cavity of the square plate, and a pressing plate and a rubber pad are respectively fixed to the top and bottom of the vertical rod. A tension spring is sleeved on the outer wall of the outer end of the vertical rod located on the outside of the square plate. The pressing piece is elastically connected to the square plate by a tension spring.

[0013] Preferably, a compression airbag module is installed on the other side of the inner cavity of the square plate. The bottom of both the square plate and the rubber pad is made of flexible material.

[0014] Preferably, the drive mechanism includes a servo motor and a fixed plate. The servo motor is fixedly connected to the base, and the output end of the servo motor is fixedly connected to the fixed plate. The clamp module is mounted on the fixed plate, and the fixed plate is rotatably connected to the base.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention, through the cooperation of a positioning component and a first clamping plate, etc., allows the positioning block to be pulled by the output end of the hydraulic lifting module, causing the plate and the abutment to fit and clamp the hybrid gearbox housing to be welded. By adjusting the position of multiple plates back and forth, the invention significantly reduces the problem of existing fixed clamps failing to better adapt to hybrid gearbox housings, resulting in a decrease in clamping force. It also allows for flexible adjustment of the positioning height, adapting to hybrid gearbox housings of different specifications and heights, thus improving the versatility of the clamp.

[0016] This invention, through the cooperation of a power component and a second clamping plate, uses a first electric telescopic rod to drive the crossbar to move and a second electric telescopic rod to flip the square plate, allowing the bottom of the square plate to better abut against one end of the outer wall of the hybrid gearbox housing. By using a compression airbag module and adjusting the position of the rubber pad, the hybrid gearbox housing is clamped again, further improving the overall clamping effect. This allows for precise fitting of the welded parts of the housing at different angles, enhancing clamping adaptability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram showing the connection relationship between the drive mechanism and the base of the present invention; Figure 3 This is a schematic diagram of the hydraulic lifting module and drive mechanism of the present invention; Figure 4 This is a schematic diagram showing the subdivided structure of the clamping module of the present invention; Figure 5 This is a schematic diagram of the subdivided structure of the first clamping plate of the present invention; Figure 6 This is a schematic diagram of the subdivided structure of the second clamping plate of the present invention; Figure 7 This is a detailed structural diagram of the second clamping plate and the power assembly of the present invention; Figure 8 This is a schematic diagram of the power assembly and the second rotating shaft of the present invention.

[0018] In the picture: 100. Base; 200. Drive mechanism; 300. Fixture module; 310. Positioning component; 311. Positioning block; 312. Hollow positioning disc; 313. First roller; 314. Hydraulic lifting module; 320. First clamping plate; 321. Plate body; 322. First pivot; 323. Welding device; 324. Spring plate; 330. Power assembly; 331. First electric telescopic rod; 332. Crossbar; 333. Second electric telescopic rod; 334. Locking block; 335. Locking slot; 336. Second roller; 340. Second clamping plate; 341. Square plate; 342. Positioning frame; 343. Press plate; 344. Vertical rod; 345. Tension spring; 346. Rubber pad; 347. Compression airbag module; 348. Second rotating shaft. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figures 1 to 8 As shown, the present invention provides a hybrid transmission welding fixture, including a base 100 and a drive mechanism 200 mounted on the base 100. A three-jaw chuck for clamping the hybrid transmission housing to be welded is mounted on one side of the drive mechanism 200. A clamping module 300 is slidably connected to the side wall of the drive mechanism 200 through multiple straight slots. The clamping module 300 includes a hydraulic lifting module 314 installed inside the straight slots, and further includes: The first clamping plate 320 is disposed on one side of the drive mechanism 200, and one end is connected to the positioning component 310. The power assembly 330 is slidably connected inside the first clamping plate 320; The second clamping plate 340 is installed on the side of the power assembly 330 away from the first clamping plate 320; The first clamping plate 320 includes a plate body 321, which is provided with multiple sets of clamps. Both ends of the side wall of the plate body 321 are rotatably connected to the abutment 323 through the first rotating shaft 322. The power assembly 330 includes a crossbar 332 slidably connected inside the plate body 321. One end of the crossbar 332 extends and passes through the outer end of the plate body 321. The top end of the crossbar 332 is fixedly connected to a second electric telescopic rod 333 for pushing the second clamping plate 340 to rotate.

[0021] The above solution involves adding a first clamping plate 320, a power component 330, and a second clamping plate 340, along with the existing hydraulic lifting module 314 and a three-jaw chuck, to achieve multi-dimensional clamping and positioning of the hybrid gearbox housing. This solves the problems of insufficient clamping stability and easy welding displacement caused by a single chuck. The plate 321, connected to the abutment 323 via the first rotating shaft 322, can flexibly adapt to the contours of different parts of the housing. The crossbar 332 drives the second clamping plate 340 to achieve front-to-back displacement adjustment, and the second electric telescopic rod 333 can push the second clamping plate 340 to rotate, thereby adapting to the angle requirements of the housing welding surface. This significantly improves the versatility and clamping accuracy of the clamp, further ensuring welding stability.

[0022] The positioning component 310 includes a plurality of annularly distributed positioning blocks 311 that are slidably connected to the straight groove on the side wall of the drive mechanism 200. The bottom end of the positioning block 311 is fixedly connected to the hydraulic lifting module 314.

[0023] The above scheme employs the following: The annularly distributed positioning blocks 311 form an annular positioning structure around the hybrid gearbox housing to be welded, precisely conforming to the outer circumferential contour of the housing, achieving circumferential limitation of the housing, and preventing circumferential rotation of the housing during welding; the positioning blocks 311 are fixedly connected to the hydraulic lifting module 314, which can drive the positioning blocks 311 to slide up and down along the straight groove of the drive mechanism 200, flexibly adjusting the positioning height to adapt to hybrid gearbox housings of different specifications and heights, improving the versatility of the fixture; simultaneously, the synchronous positioning of multiple positioning blocks 311 can distribute the force on the housing, avoiding excessive local force that could lead to housing deformation, ensuring the dimensional accuracy of the housing after welding, and laying the foundation for subsequent assembly processes.

[0024] A hollow positioning disk 312 is bolted to the side of the positioning block 311 away from the drive mechanism 200. A first roller 313 for sliding and limiting the plate 321 is installed in the middle of the inner cavity of the hollow positioning disk 312.

[0025] The above solution is adopted: the hollow positioning plate 312 is connected to the positioning block 311 by bolts, which is convenient for disassembly and replacement. The hollow positioning plate 312 of the corresponding size can be replaced according to different specifications of the shell, further improving the versatility of the fixture.

[0026] A spring sheet 324 is sleeved at the rotating end of the stop 323 and the first rotating shaft 322 to allow the stop 323 to elastically return to its original position; The two abutments 323 located on the same side are shaped like the number "8", and the lower end of the abutments 323 is provided with a rubber sheet.

[0027] The above solution utilizes the following: the spring plate 324 allows the retainer 323 to elastically reset after clamping the housing. When the housing is removed or the clamping position is adjusted, the retainer 323 automatically returns to its initial position without manual reset, improving operational convenience. The two retainers 323 on the same side, shaped like the number "8", form a closed clamping structure, precisely clamping the corners or protruding parts of the housing, enhancing clamping strength and preventing the housing from loosening during welding. The rubber sheet at the lower end of the retainer 323 increases the friction with the housing surface, further improving clamping stability. At the same time, the soft rubber material prevents scratches, dents, and other damage to the housing surface caused by hard contact between the retainer 323 and the housing, protecting the appearance and structural integrity of the housing. This is especially suitable for welding hybrid gearbox housings with high surface precision requirements.

[0028] One end of the crossbar 332 is equipped with a first electric telescopic rod 331 located in the inner cavity of the plate 321, and the output end of the first electric telescopic rod 331 is fixedly connected to the end of the crossbar 332. A locking block 334 is hinged to the end of the crossbar 332 away from the first electric telescopic bar 331; The bottom of plate 321 is provided with multiple layers of rubber gaskets.

[0029] The above solution allows the first electric telescopic rod 331 to precisely drive the crossbar 332 to slide along the inner cavity of the plate 321, achieving automated and precise displacement adjustment of the crossbar 332. Compared with manual adjustment, this not only improves operational efficiency but also ensures adjustment accuracy, guaranteeing that the second clamping plate 340 can precisely fit the welding part of the shell. The latch 334 hinged at the end of the crossbar 332 can rotate flexibly to adapt to the angle adjustment requirements of the second clamping plate 340, preventing jamming or interference between the second clamping plate 340 and the crossbar 332 during rotation, and ensuring smooth power transmission. The multi-layer rubber pads at the bottom of the plate 321 can buffer and dampen vibrations, reducing the impact of vibrations generated during welding on the plate 321 and preventing vibrations from causing the clamps to loosen.

[0030] The end of the locking block 334 away from the crossbar 332 is slidably engaged with the locking slot 335, and the locking slot 335 is slidably connected to the second roller shaft 336 installed on the second clamping plate 340.

[0031] The second clamping plate 340 includes a square plate 341 fixedly connected to the second roller shaft 336. A positioning frame 342 is installed on one side of the top surface of the square plate 341. The positioning frame 342 is fixedly connected to a second rotating shaft 348 that is slidably connected to the output end of the second electric telescopic rod 333.

[0032] The above scheme employs the following: the square plate 341 is fixedly connected to the second roller shaft 336, ensuring that the rotation of the second roller shaft 336 synchronously drives the square plate 341 to rotate, thus guaranteeing the stability of power transmission; the positioning frame 342 provides positioning support for the output end of the second electric telescopic rod 333, preventing deviation during the pushing process of the second electric telescopic rod 333 and ensuring that the second electric telescopic rod 333 can accurately apply thrust; the sliding connection between the second rotating shaft 348 and the output end of the second electric telescopic rod 333 allows the square plate 341 to adapt to its rotation trajectory when the second electric telescopic rod 333 is extended and retracted, preventing interference between the second electric telescopic rod 333 and the positioning frame 342, ensuring the flexibility and stability of the angle adjustment of the second clamping plate 340, and enabling the square plate 341 to accurately fit the welding parts of the shell at different angles, thus improving clamping adaptability.

[0033] A vertical rod 344 is movably connected to one side of the inner cavity of the square plate 341. A pressing piece 343 and a rubber pad 346 are respectively fixed to the top and bottom of the vertical rod 344. A tension spring 345 is sleeved on the outer wall of the outer end of the vertical rod 344 located on the outside of the square plate 341. Press plate 343 is elastically connected to square plate 341 by tension spring 345.

[0034] The above solution involves the movable connection between the vertical rod 344 and the square plate 341. Combined with the elastic action of the tension spring 345, the rubber pad 346 provides elastic cushioning. When the second clamping plate 340 clamps the housing, the rubber pad 346, under the action of the tension spring 345, tightly adheres to the housing surface, adapting to minor unevenness and improving clamping fit and stability. The setting of the clip 343 facilitates manual adjustment of the height of the vertical rod 344, allowing for flexible adjustment of the position of the rubber pad 346 according to the housing thickness, further enhancing the adaptability of the fixture. The rubber pad 346 prevents hard contact between the square plate 341 and the housing, protecting the housing surface from damage. It also increases friction, reducing the risk of loosening. The elastic reset function of the tension spring 345 ensures that the rubber pad 346 remains in contact with the housing, guaranteeing clamping stability during welding.

[0035] A compression airbag module 347 is installed on the other side of the inner cavity of the square plate 341. The bottoms of both the square plate 341 and the rubber pad 346 are made of flexible material.

[0036] The above solution allows the compressed airbag module 347 to further fill the gap between the square plate 341 and the housing by inflating when the second clamping plate 340 holds the housing, achieving all-round close clamping and improving the firmness and stability of the clamping. At the same time, the elasticity of the airbag can buffer and dampen the shock, reducing the impact of welding vibration on the housing and preventing the housing from shifting or deforming due to vibration. The square plate 341 and the bottom of the rubber pad 346 are made of flexible material, which can further enhance the buffering and protection effect and prevent scratches, indentations and other damage to the housing surface during clamping. This is especially suitable for welding thin-walled hybrid gearbox housings, preventing the housing from deforming due to excessive clamping pressure, ensuring the structural accuracy and appearance quality of the housing after welding. At the same time, the flexible material can improve the fit with the housing surface and further optimize the clamping and positioning effect.

[0037] The drive mechanism 200 includes a servo motor and a fixed plate. The servo motor is fixedly connected to the base 100, and the output end of the servo motor is fixedly connected to the fixed plate. The clamp module 300 is mounted on the fixed plate, and the fixed plate is rotatably connected to the base 100.

[0038] Working principle and usage process of this invention: First, after fixing the housing with the existing three-jaw chuck on one side of the base 100, the hybrid gearbox housing to be welded is placed in the middle of the clamping module 300. According to the shape of the hybrid gearbox housing, the hydraulic lifting module 314 used to drive the movement of multiple clamping modules 300 is given a command for movement stroke through terminal data control. The hydraulic lifting module 314 will drive the positioning component 310, the first clamping plate 320, the power component 330 and the second clamping plate 340 to gradually adhere to and press against the hybrid gearbox housing; Subsequently, during the continuous pressing process, the bottom end of the retainer 323, which is located on the same side and is arranged in a figure-eight shape, will first contact the outside of the housing. Due to the limitation of the rubber material at the bottom of the retainer 323, the bottom of the retainer 323 can press the housing more flexibly, which is more suitable for the shape of the irregular hybrid transmission housing, and will not cause pressure wear on the outside of the housing due to material issues. Afterwards, multiple plates 321 can be moved left and right to shift inside the hollow positioning plate 312 and the square plate 341, thereby changing the spacing between the multiple plates 321 and changing their positions according to the actual shape of the hybrid gearbox housing. The plates 321 will also cause the multi-layer rubber pads at their bottom to be gradually pressed against the outside of the housing for secondary clamping. Activating the first electric telescopic rod 331 causes its output end to drive the crossbar 332 to extend outward inside the plate 321, so that the crossbar 332 drives the second electric telescopic rod 333, the locking block 334, the locking slot 335 and the second clamping plate 340 to move synchronously, thereby increasing the clamping area on the hybrid gearbox housing through extension. Finally, the second electric telescopic rod 333 is activated so that its output end pushes the square plate 341 to flip through the second rotating shaft 348 and the positioning frame 342. The sliding engagement relationship between the locking block 334 and the locking slot 335 ensures the smooth flipping of the square plate 341. At this time, one end of the bottom of the square plate 341 located above the hybrid transmission housing will gradually come into contact with the hybrid transmission housing. The compressed airbag module 347 deforms due to the compression with the hybrid transmission housing, thereby "gas" pressing the recessed area of ​​the hybrid transmission housing. At the same time, the push plate 343 is pulled up, causing it to drive the rubber pad 346 upward through the vertical rod 344. By observing the actual shape characteristics of the hybrid transmission housing in advance, the landing area of ​​the square plate 341 can be adjusted by the first electric telescopic rod 331 and the second electric telescopic rod 333. Then, by releasing the pull on the push plate 343, the rubber pad 346 is made to abut against the recessed area on the outside of the hybrid transmission housing again through the tension spring 345, and is clamped and reinforced again.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding fixture for a hybrid transmission, comprising a base (100) and a drive mechanism (200) mounted on the base (100), wherein a three-jaw chuck for clamping a hybrid transmission housing to be welded is mounted on one side of the drive mechanism (200), and a fixture module (300) is slidably connected to the side wall of the drive mechanism (200) through a plurality of straight slots, the fixture module (300) including a hydraulic lifting module (314) installed inside the straight slots, characterized in that: Also includes: The first clamping plate (320) is located on one side of the drive mechanism (200) and one end is connected to the positioning component (310). A power assembly (330) is slidably connected inside the first clamping plate (320); The second clamping plate (340) is installed on the side of the power assembly (330) away from the first clamping plate (320); The first clamping plate (320) includes a plate body (321), which is provided with multiple sets of clamps. Both ends of the side wall of the plate body (321) are rotatably connected to abutments (323) through a first rotating shaft (322). The power assembly (330) includes a crossbar (332) slidably connected inside the plate body (321). One end of the crossbar (332) extends and penetrates to the outer end of the plate body (321). The top end of the crossbar (332) is fixedly connected to a second electric telescopic rod (333) for pushing the second clamping plate (340) to rotate.

2. The hybrid gearbox welding fixture according to claim 1, characterized in that: The positioning component (310) includes a plurality of annularly distributed positioning blocks (311) that are slidably connected to the straight groove on the side wall of the drive mechanism (200), and the bottom end of the positioning block (311) is fixedly connected to the hydraulic lifting module (314).

3. The hybrid gearbox welding fixture according to claim 2, characterized in that: The positioning block (311) is bolted to a hollow positioning disk (312) on the side away from the drive mechanism (200). A first roller (313) for sliding and limiting the plate (321) is installed in the middle of the inner cavity of the hollow positioning disk (312).

4. The hybrid gearbox welding fixture according to claim 1, characterized in that: A spring sheet (324) is sleeved at the rotating end of the abutment (323) and the first rotating shaft (322) to allow the abutment (323) to elastically return to its original position. The two abutments (323) located on the same side are shaped like the number "8", and the lower end of the abutment (323) is provided with a rubber sheet.

5. The hybrid gearbox welding fixture according to claim 1, characterized in that: One end of the crossbar (332) is equipped with a first electric telescopic rod (331) located in the inner cavity of the plate (321), and the output end of the first electric telescopic rod (331) is fixedly connected to the end of the crossbar (332). The crossbar (332) is hinged to a locking block (334) at the end away from the first electric telescopic rod (331); The bottom of the plate (321) is provided with multiple layers of rubber gaskets.

6. The hybrid gearbox welding fixture according to claim 5, characterized in that: The end of the locking block (334) away from the crossbar (332) is slidably engaged with a locking slot (335), and the locking slot (335) is slidably connected to a second roller shaft (336) installed on the second clamping plate (340).

7. The hybrid transmission welding fixture according to claim 1, characterized in that: The second clamping plate (340) includes a square plate (341) fixedly connected to the second roller shaft (336). A positioning frame (342) is installed on one side of the top surface of the square plate (341). The positioning frame (342) is fixedly connected to a second rotating shaft (348) that is slidably connected to the output end of the second electric telescopic rod (333).

8. The hybrid transmission welding fixture according to claim 7, characterized in that: A vertical rod (344) is movably connected to one side of the inner cavity of the square plate (341). A pressing piece (343) and a rubber pad (346) are fixed to the top and bottom of the vertical rod (344) respectively. A tension spring (345) is sleeved on the outer wall of the outer end of the vertical rod (344) located on the outside of the square plate (341). The pressing piece (343) is elastically connected to the square plate (341) by a tension spring (345).

9. The hybrid gearbox welding fixture according to claim 8, characterized in that: A compressed airbag module (347) is installed on the other side of the inner cavity of the square plate (341). The bottom of both the square plate (341) and the rubber pad (346) is made of flexible material.

10. The hybrid gearbox welding fixture according to claim 1, characterized in that: The drive mechanism (200) includes a servo motor and a fixed plate. The servo motor is fixedly connected to the base (100), and the output end of the servo motor is fixedly connected to the fixed plate. The clamp module (300) is mounted on the fixed plate, and the fixed plate is rotatably connected to the base (100).

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