A gear laser welding fixture

Abstract

The present invention discloses a gear laser welding fixture, which relates to the field of manufacturing and automation technology. It includes a base, and a docking device, a clamping device and a flipping device are arranged above the base. After the gear is installed, the gear can be rotationally welded by rotating the rotating frame in conjunction with the placement frame, the clamping block, the knob and the rotating rod. Rotary welding utilizes the precise control and high energy density of the laser beam to achieve high-quality welding at the joint part of the gear, which can reduce the heat-affected zone, reduce deformation and stress, and thus improve the strength and durability of the welded joint. If the rotation stops, the limit block is stuck in the limit groove through the limit block. At this time, the knob cannot be rotated to prevent external force from touching the knob and causing operational errors. The limit block is matched with the contact block and the spiral groove so that the limit block drives the contact block to move to the right, and the radius of the gear can be appropriately adjusted to adapt to the appropriate gear size.

Description

Technical Field

[0001] The invention relates to the technical field of manufacturing and automation, in particular to a gear laser welding fixture. Background Art

[0002] Gear laser welding fixtures are commonly used to achieve high-precision welding during gear manufacturing. These fixtures are designed to ensure the gear remains stable and aligned during the laser welding process, thereby improving welding quality and efficiency. They utilize a high-energy laser beam to locally heat the weld material, making them suitable for welding high-precision and complex geometries.

[0003] Patent publication number CN202667942U covers the field of manufacturing and automation technology, and includes a power rotation mechanism, a welding platform, a ring gear clamping mechanism, a spoke plate clamping mechanism, and a ring gear tightening mechanism. The welding platform is fixedly connected to the power rotation mechanism, the ring gear clamping mechanism is mounted on the welding platform to axially clamp the ring gear, the spoke plate clamping mechanism is mounted on the welding platform to axially clamp the spoke plate, and the ring gear tightening mechanism is mounted on the welding platform to radially clamp the ring gear. In this patent, the ring gear is radially clamped by the ring gear tightening mechanism to ensure its concentricity; the ring gear is axially clamped by the ring gear clamping mechanism, which not only ensures the end face accuracy of the ring gear but also provides splash protection; the spoke plate is axially clamped by the spoke plate clamping mechanism to prevent welding deformation of the spoke plate and improve welding accuracy. The entire device can effectively prevent welding deformation, protect gears, and improve welding accuracy and efficiency.

[0004] In the above patent, the entire device can effectively prevent welding deformation, protect gears, and improve welding accuracy and efficiency. However, the current measuring equipment has the following problems: if the gears are difficult to rotate and weld, the molten pool during the welding process may not be evenly distributed, resulting in uneven welds, affecting strength and durability. In addition, if the rotating gears are not limited, external forces may accidentally cause rotation, thereby causing welding operation errors. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a gear laser welding fixture that solves the problems raised in the above background technology.

[0006] To achieve the above purpose, the present invention is implemented through the following technical solutions: a gear laser welding fixture, including a base, a docking device, a clamping device and a flipping device are arranged above the base; wherein, the docking device includes a fixed frame, an adjusting frame, a fixed block, a knob, a limit rod, a limit block, a rotating rod, an elastic telescopic rod, a placement frame, a rotating frame, a clamping block, a bearing, a blocking wheel and a contact block, the fixed frame is fixedly mounted on the top of the base, the adjusting frame is rotatably mounted on the inner wall of the fixed frame, the fixed block is fixedly mounted on the top of the adjusting frame, the knob is rotatably mounted on the right side of the fixed block, a limit slot is provided on the right side of the knob, the limit rod is rotatably mounted on the right side of the knob, and the limit block is slidably mounted on the circumferential surface of the limit rod, One side of the rotating rod is fixedly mounted on the left side of the rotating knob, and the other side of the rotating rod rotates and penetrates the inner and outer walls of the fixed block. The fixed end of the elastic telescopic rod is fixedly mounted on the top of the base, and the placement frame is fixedly mounted on the output end of the elastic telescopic rod. The rotating frame is rotatably mounted on the inner wall of the placement frame, and the clamping block is rotatably mounted on the surface of the placement frame. After the gear is installed, the gear can be rotationally welded by rotating the rotating frame to cooperate with the placement frame, the clamping block, the rotating knob and the rotating rod. A circular groove is provided on the surface of the rotating frame, and the bearing is arranged between the placement frame and the rotating frame. The resisting wheel is rotatably mounted on the inner wall of the bearing, and the contact block is fixedly mounted on the circumferential surface of the resisting wheel. If it stops rotating, the limit block is stuck in the limit groove, and the knob cannot rotate at this time.

[0007] According to the above technical solution, a spiral groove is provided on the circumferential surface of the rotating rod, and the spiral groove is threadedly connected to the resisting wheel. The resisting wheel is rotated to drive the contact block to rotate, and the spiral groove drives the contact block to move to the right.

[0008] According to the above technical solution, the clamping device includes a tripod, a sliding column and a receiving plate. The tripod is fixedly mounted on the circumferential surface of the rotating rod, the sliding column is slidably mounted on the circumferential surface of the rotating rod, a No. 1 spring is provided between the sliding column and the rotating rod, and the receiving plate is fixedly mounted on the circumferential surface of the sliding column. The contact block moves to contact the sliding column, so that the sliding column moves to the right and drives the receiving plate to move.

[0009] According to the above technical solution, the clamping device also includes an L-shaped slider and a rotating rod. One side of the L-shaped slider is slidably installed on the inner wall of the tripod, one side of the rotating rod is rotatably installed on the surface of the L-shaped slider, and the other side of the rotating rod is rotatably installed on the outer wall of the receiving plate. The receiving plate moves to cause the rotating rod to rotate upward. The rotation of the rotating rod drives the L-shaped slider to move upward and limits the moving distance of the L-shaped slider through the tripod until it contacts the inner wall of the gear.

[0010] According to the above technical solution, the clamping device also includes a receiving block, a round rod and a positioning groove. The receiving block is fixedly installed on the front side of the fixed frame, the round rod is fixed through the inner and outer walls of the fixed frame, and the positioning groove is fixedly installed on the outer wall of the adjusting frame. The round rod is released from the restriction so that the round rod can rotate freely.

[0011] According to the above technical solution, the flipping device includes a pressure plate, a connecting rod, a No. 2 spring and a limit column. The connecting rod slides through the inner and outer walls of the receiving block. The pressure plate is fixedly installed on the top of the connecting rod. The No. 2 spring is arranged between the receiving block and the pressure plate. One side of the limit column is fixedly installed on the surface of the connecting rod, and the other side of the limit column slides through the inner and outer walls of the round rod. By pressing the pressure plate, the connecting rod is driven to move downward and the No. 2 spring is compressed at the same time, so that the limit column is disengaged from the round rod.

[0012] According to the above technical solution, the flipping device also includes a mounting frame and a hollow block. The mounting frame is fixedly mounted on the top of the base, and the hollow block is fixedly mounted on the top of the mounting frame to support the flipped clamping device.

[0013] According to the above technical solution, the flipping device also includes an insert block, a slide plate, a No. 3 spring and a limiting plate. The insert block is slidably installed on the inner wall of the hollow block, the slide plate is slidably installed on the inner wall of the hollow block, the No. 3 spring is arranged between the insert block and the slide plate, and the limiting plate is fixedly installed on the rear side of the mounting frame. The top of the insert block is set as an inclined surface, and a No. 4 spring is arranged between the slide plate and the hollow block. If the adjusted frame needs to be released after rotation, the slide plate is moved by pulling the slide plate outward. The movement of the slide plate will stretch the No. 3 spring. When the No. 3 spring is stretched to a certain extent, it will pull the insert block to move. At this time, the insert block is disengaged from the positioning groove. Only then can the adjusted frame be rotated freely. The time during equipment installation and replacement of welding angles can be significantly reduced by quick fixing and disassembly.

[0014] The present invention provides a gear laser welding fixture. It has the following beneficial effects:

[0015] (1) This invention, through the setting of the docking device, after the gears are installed, the gears can be rotationally welded by rotating the rotating frame in conjunction with the placement frame, the clamping block, the knob and the rotating rod. Rotary welding uses the precise control and high energy density of the laser beam to achieve high-quality welding at the joint part of the gear, which can reduce the heat-affected zone, reduce deformation and stress, and thus improve the strength and durability of the welded joint. If the rotation is stopped, the limit block is stuck in the limit groove, and the knob cannot be rotated at this time, preventing external force from touching the knob and causing an operation error. At this time, the contact block is driven to rotate by rotating the limit block, and the limit block drives the contact block to move to the right through the spiral groove, so that the radius of the gear can be appropriately adjusted to adapt to the appropriate gear size.

[0016] (2) This invention, through the setting of the clamping device, after the gear is placed, the inner wall of the gear can be supported by the contact block in conjunction with the sliding column, the receiving plate, the rotating rod, the L-shaped slider and the tripod to achieve the clamping of the gear. The triangular support can effectively disperse the force applied to the gear, reduce stress concentration, and thus reduce the deformation or stress concentration problems that may occur during the processing. This can ensure the geometric accuracy and functional consistency of the gear. After the restriction of the rotating frame by the clamping block is released and removed, the circular rod is rotated by the rotation of the adjustment frame, and the positioning groove is moved at the same time. At this time, the adjustment frame can be rotated 90° to the right, and the gear can be welded from the circumferential surface to the top of the gear. By welding at different angles, the size and shape of the gear can be more accurately controlled, thereby reducing the subsequent processing steps, which can reduce production costs and improve manufacturing efficiency.

[0017] (3) This invention, through the setting of the flip device, supports the adjustment frame by pressing the pressure plate in conjunction with the connecting rod, No. 2 spring, limiting column, round rod, positioning groove, plug block, and No. 3 spring to prevent the adjustment frame from having no support after rotation, resulting in unstable position after rotation, which may cause operational errors during welding. If the adjustment frame needs to be released after rotation, it can be moved by pulling the slide outward. The movement of the slide will stretch the No. 3 spring. When the No. 3 spring is stretched to a certain extent, it will pull the plug block to move. At this time, the plug block will be separated from the positioning groove. Only then can the adjustment frame be rotated freely. The time of equipment installation and replacement of welding angle can be significantly reduced by fast fixing and disassembly, thereby reducing downtime and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic structural diagram of the positional relationship between the clamping block and the rotating frame of the present invention;

[0020] Figure 3 This is a schematic structural diagram of the positional relationship between the resisting wheel and the contact block of the present invention;

[0021] Figure 4 This is a schematic structural diagram of the positional relationship between the rotating rod and the sliding column of the present invention;

[0022] Figure 5 This is a schematic diagram of the positional relationship between the limit block and the limit rod of the present invention;

[0023] Figure 6 This is a schematic structural diagram of the positional relationship between the receiving block and the round rod of the present invention;

[0024] Figure 7 Schematic diagram of the internal structure of the hollow block of the present invention.

[0025] In the figure: 1. base; 10. fixing frame; 11. adjusting frame; 12. fixing block; 13. knob; 14. limiting rod; 15. limiting block; 16. rotating rod; 17. elastic telescopic rod; 18. placement frame; 19. rotating frame; 110. clamping block; 111. bearing; 112. blocking wheel; 113. contact block; 20. tripod; 21. sliding column; 22. receiving plate; 23. L-shaped slider; 24. rotating rod; 25. receiving block; 26. round rod; 27. positioning groove; 31. pressure plate; 32. connecting rod; 33. No. 2 spring; 34. limiting column; 35. mounting frame; 36. hollow block; 37. plug block; 38. slide plate; 39. No. 3 spring. DETAILED DESCRIPTION

[0026] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0027] See also Figure 1-Figure 5, one embodiment of the present invention is: a gear laser welding fixture, including a base 1, a docking device is provided above the base 1, the docking device includes a fixed frame 10, an adjusting frame 11, a fixed block 12, a knob 13, a limit rod 14, a limit block 15, a rotating rod 16, an elastic telescopic rod 17, a placement frame 18, a rotating frame 19, a clamping block 110, a bearing 111, a resisting wheel 112 and a contact block 113, the fixed frame 10 is fixedly mounted on the top of the base 1, the adjusting frame 11 is rotatably mounted on the inner wall of the fixed frame 10, the fixed block 12 is fixedly mounted on the top of the adjusting frame 11, the rotating knob 13 is rotatably mounted on the right side of the fixed block 12, a limit slot is provided on the right side of the rotating knob 13, the limit rod 14 is rotatably mounted on the right side of the rotating knob 13, the limit block 15 is slidably mounted on the circumferential surface of the limit rod 14 to prevent external force from touching the rotating knob 13 and causing operation errors, the rotating rod 1 One side of 6 is fixedly mounted on the left side of the knob 13, and the other side of the rotating rod 16 rotates through the inner and outer walls of the fixed block 12. The fixed end of the elastic telescopic rod 17 is fixedly mounted on the top of the base 1, and the placement frame 18 is fixedly mounted on the output end of the elastic telescopic rod 17. The rotating frame 19 is rotatably mounted on the inner wall of the placement frame 18. The clamping block 110 is rotatably mounted on the surface of the placement frame 18. A circular groove is provided on the surface of the rotating frame 19. The bearing 111 is arranged between the placement frame 18 and the rotating frame 19. The resisting wheel 112 is rotatably mounted on the inner wall of the bearing 111, and the contact block 113 is fixedly mounted on the circumferential surface of the resisting wheel 112. At this time, the gear can be rotationally welded. Rotary welding utilizes the precise control and high energy density of the laser beam to achieve high-quality welding at the joint part of the gear, which can reduce the heat affected zone, reduce deformation and stress, and thus improve the strength and durability of the welded joint.

[0028] A spiral groove is formed on the circumferential surface of the rotating rod 16 , and the spiral groove is threadedly connected to the resisting wheel 112 , so that the resisting wheel 112 drives the contact block 113 to move rightward through the spiral groove.

[0029] When this embodiment is working, after the gear is installed, the rotating frame 19 is rotated to fit with the placement frame 18, and the rotating frame 19 is restricted by rotating the clamping block 110. At this time, the rotating rod 16 is driven to rotate by the knob 13, and the gear can be rotationally welded. Rotary welding utilizes the precise control and high energy density of the laser beam to achieve high-quality welding at the joint part of the gear, which can reduce the heat-affected zone, reduce deformation and stress, and thus improve the strength and durability of the welded joint. If the rotation is stopped, the limit block 15 is engaged in the limit groove, and the knob 13 cannot be rotated at this time to prevent external force from touching the knob 13 and causing operational errors. At this time, the contact block 113 is driven to rotate by rotating the resisting wheel 112, and the resisting wheel 112 drives the contact block 113 to move to the right through the spiral groove. The radius of the gear can be appropriately adjusted to adapt to the appropriate gear size.

[0030] See also Figure 1-Figure 7 On the basis of the above embodiment, in another embodiment of the present invention, a clamping device and a flipping device are provided above the base 1, and the clamping device includes a tripod 20, a sliding column 21 and a receiving plate 22. The tripod 20 is fixedly mounted on the circumferential surface of the rotating rod 16, and the sliding column 21 is slidably mounted on the circumferential surface of the rotating rod 16. A No. 1 spring is provided between the sliding column 21 and the rotating rod 16, and the sliding column 21 is driven to reset by the provided No. 1 spring. The receiving plate 22 is fixedly mounted on the circumferential surface of the sliding column 21, so that the sliding column 21 moves to the right to drive the receiving plate 22 to move, and the movement of the receiving plate 22 causes the rotating rod 24 to rotate upward.

[0031] The clamping device also includes an L-shaped slider 23 and a rotating rod 24. One side of the L-shaped slider 23 is slidably mounted on the inner wall of the tripod 20, one side of the rotating rod 24 is rotatably mounted on the surface of the L-shaped slider 23, and the other side of the rotating rod 24 is rotatably mounted on the outer wall of the receiving plate 22 to clamp the gear. The triangular support can effectively disperse the force applied to the gear and reduce stress concentration, thereby reducing deformation or stress concentration problems that may occur during the processing process, thereby ensuring the geometric accuracy and functional consistency of the gear.

[0032] The clamping device also includes a receiving block 25, a round rod 26 and a positioning groove 27. The receiving block 25 is fixedly installed on the front side of the fixing frame 10, the round rod 26 is fixedly passed through the inner and outer walls of the fixing frame 10, and the positioning groove 27 is fixedly installed on the outer wall of the adjusting frame 11. The adjusting frame 11 is rotated to drive the round rod 26 to rotate, and at the same time drive the positioning groove 27 to move. At this time, the adjusting frame 11 can be rotated 90° to the right.

[0033] The flipping device includes a pressure plate 31, a connecting rod 32, a No. 2 spring 33 and a limit column 34. The connecting rod 32 slides through the inner and outer walls of the receiving block 25. The pressure plate 31 is fixedly installed on the top of the connecting rod 32. The No. 2 spring 33 is arranged between the receiving block 25 and the pressure plate 31. The pressure plate 31 is reset by the arranged No. 2 spring 33. One side of the limit column 34 is fixedly installed on the surface of the connecting rod 32, and the other side of the limit column 34 slides through the inner and outer walls of the round rod 26. By pressing the pressure plate 31, the connecting rod 32 is driven to move downward and the No. 2 spring 33 is compressed at the same time, so that the limit column 34 is disengaged from the round rod 26.

[0034] The turning device further includes a mounting frame 35 and a hollow block 36 . The mounting frame 35 is fixedly mounted on the top of the base 1 , and the hollow block 36 is fixedly mounted on the top of the mounting frame 35 , so that the turning device rotates.

[0035] The flipping device also includes an insert block 37, a slide plate 38, a No. 3 spring 39 and a limiting plate 310. The insert block 37 is slidably installed on the inner wall of the hollow block 36, and the slide plate 38 is slidably installed on the inner wall of the hollow block 36. The No. 3 spring 39 is arranged between the insert block 37 and the slide plate 38. The insert block 37 is reset by the arranged No. 3 spring 39. The limiting plate 310 is fixedly installed on the rear side of the mounting frame 35. The positioning groove 27 is supported by the limiting plate 310, that is, the adjustment frame 11 is supported to prevent the adjustment frame 11 from having nowhere to support after rotation, resulting in an unstable position after rotation, thereby causing operational errors during welding. The top of the insert block 37 is set as an inclined plane, and a No. 4 spring is arranged between the slide plate 38 and the hollow block 36. The No. 4 spring is used to drive the slide plate 38 to reset.

[0036] During operation of this embodiment, after the gear is placed, the contact block 113 moves to contact the sliding post 21, causing the sliding post 21 to move rightward, driving the receiving plate 22 to move. The movement of the receiving plate 22 causes the rotating rod 24 to rotate upward. The rotating rod 24 rotates, driving the L-shaped slider 23 to move upward, and the travel distance of the L-shaped slider 23 is limited by the tripod 20 until it contacts the inner wall of the gear. At this time, the inner wall of the gear can be supported to clamp the gear. The tripod support can effectively disperse the force applied to the gear, reduce stress concentration, and thus reduce deformation or stress concentration problems that may occur during processing. This can ensure the geometric accuracy and functional consistency of the gear. After the clamping block 110 is released from the restriction on the rotating frame 19 and removed, the adjusting frame 11 rotates and drives the round rod 26 to rotate, while driving the positioning groove 27 to move. At this time, the adjusting frame 11 can be rotated 90 degrees to the right, and the gear can be welded from the circumferential surface to the top of the gear. By welding at different angles, the size and shape of the gear can be more accurately controlled, thereby reducing subsequent processing steps, which can reduce production costs and improve manufacturing efficiency.

[0037] The third spring 39 is compressed when the outer wall of the positioning groove 27 contacts the inclined surface of the insert block 37 and the third spring 39 is released. When the positioning groove 27 and the insert block 37 are at the same level, the third spring 39 is released and drives the insert block 37 to be inserted into the positioning groove 27. At the same time, the outer wall of the positioning groove 27 also contacts the limiting plate 310, and the positioning groove 27 is supported by the limiting plate 310. The adjusting frame 11 is supported to prevent the adjusting frame 11 from having nowhere to support after rotation, resulting in an unstable position after rotation, which may cause operational errors during welding. If the adjusted frame 11 needs to be released after rotation, the slide plate 38 is pulled outward to move. The movement of the slide plate 38 will stretch the No. 3 spring 39. When the No. 3 spring 39 is stretched to a certain extent, it will pull the plug block 37 to move. At this time, the plug block 37 is disengaged from the positioning groove 27. Only then can the adjusting frame 11 be freely rotated. Through quick fixing and disassembly, the time during equipment installation and replacement of welding angles can be significantly reduced, thereby reducing downtime and improving production efficiency.

[0038] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A gear laser welding fixture, comprising a base (1), characterized in that: A docking device, a clamping device and a turning device are provided above the base (1); The docking device comprises a fixed frame (10), an adjusting frame (11), a fixed block (12), a knob (13), a limiting rod (14), a limiting block (15), a rotating rod (16), an elastic telescopic rod (17), a placement frame (18), a rotating frame (19), a clamping block (110), a bearing (111), a blocking wheel (112) and a contact block (113), wherein the fixed frame (10) is fixedly mounted on the top of the base (1), the adjusting frame (11) is rotatably mounted on the inner wall of the fixed frame (10), the fixed block (12) is fixedly mounted on the top of the adjusting frame (11), the knob (13) is rotatably mounted on the right side of the fixed block (12), a limiting slot is provided on the right side of the knob (13), the limiting rod (14) is rotatably mounted on the right side of the knob (13), and the limiting block (15) is slidably mounted. Mounted on the circumferential surface of the limit rod (14), one side of the rotating rod (16) is fixedly mounted on the left side of the rotating knob (13), and the other side of the rotating rod (16) rotates through the inner and outer walls of the fixed block (12), the fixed end of the elastic telescopic rod (17) is fixedly mounted on the top of the base (1), the placement frame (18) is fixedly mounted on the output end of the elastic telescopic rod (17), the rotating frame (19) is rotatably mounted on the inner wall of the placement frame (18), the clamping block (110) is rotatably mounted on the surface of the placement frame (18), a circular groove is provided on the surface of the rotating frame (19), the bearing (111) is arranged between the placement frame (18) and the rotating frame (19), the blocking wheel (112) is rotatably mounted on the inner wall of the bearing (111), and the contact block (113) is fixedly mounted on the circumferential surface of the blocking wheel (112); The clamping device includes a tripod (20), a sliding column (21) and a receiving plate (22), wherein the tripod (20) is fixedly mounted on the circumferential surface of the rotating rod (16), the sliding column (21) is slidably mounted on the circumferential surface of the rotating rod (16), a spring No. 1 is provided between the sliding column (21) and the rotating rod (16), and the receiving plate (22) is fixedly mounted on the circumferential surface of the sliding column (21); The clamping device further comprises a receiving block (25), a round rod (26) and a positioning groove (27), wherein the receiving block (25) is fixedly mounted on the front side of the fixing frame (10), the round rod (26) is fixedly passed through the inner and outer walls of the fixing frame (10), and the positioning groove (27) is fixedly mounted on the outer wall of the adjusting frame (11); The turning device includes a pressure plate (31), a connecting rod (32), a second spring (33) and a limiting column (34), wherein the connecting rod (32) slides through the inner and outer walls of the receiving block (25), the pressure plate (31) is fixedly mounted on the top of the connecting rod (32), the second spring (33) is arranged between the receiving block (25) and the pressure plate (31), one side of the limiting column (34) is fixedly mounted on the surface of the connecting rod (32), and the other side of the limiting column (34) slides through the inner and outer walls of the round rod (26); The turning device further comprises a mounting frame (35) and a hollow block (36), wherein the mounting frame (35) is fixedly mounted on the top of the base (1), and the hollow block (36) is fixedly mounted on the top of the mounting frame (35); The flipping device further comprises an insert block (37), a slide plate (38), a No. 3 spring (39) and a limiting plate (310), wherein the insert block (37) is slidably mounted on the inner wall of the hollow block (36), the slide plate (38) is slidably mounted on the inner wall of the hollow block (36), the No. 3 spring (39) is arranged between the insert block (37) and the slide plate (38), the limiting plate (310) is fixedly mounted on the rear side of the mounting frame (35), the top of the insert block (37) is arranged as an inclined surface, and a No. 4 spring is arranged between the slide plate (38) and the hollow block (36).

2. The gear laser welding fixture according to claim 1, characterized in that: A spiral groove is formed on the circumferential surface of the rotating rod (16), and the spiral groove is threadedly connected to the resisting wheel (112).

3. The gear laser welding fixture according to claim 1, characterized in that: The clamping device further comprises an L-shaped slider (23) and a rotating rod (24), wherein one side of the L-shaped slider (23) is slidably mounted on the inner wall of the tripod (20), one side of the rotating rod (24) is rotatably mounted on the surface of the L-shaped slider (23), and the other side of the rotating rod (24) is rotatably mounted on the outer wall of the receiving plate (22).

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