A welding fixture for flywheel parts production of automobile

Abstract

The present application relates to the technical field of welding fixture, especially relates to a welding fixture for automobile flywheel part production. The welding fixture comprises a mounting seat, the mounting seat is rotationally connected with a rotating seat, the mounting seat is fixedly connected with a fixing seat, the fixing seat is slidably connected with a sliding frame, the sliding frame is rotationally connected with a pressing shaft, the mounting seat is provided with a motor, a hydraulic rod and a welding gun, the pressing shaft is provided with a positioning assembly, the positioning assembly comprises a sliding seat, the sliding seat is slidably connected with the pressing shaft, the sliding seat is slidably connected with positioning rods which are uniformly distributed in the circumferential direction, the positioning rods are threadedly connected with threaded rods, and the sliding seat is rotationally connected with fixing shafts which are uniformly distributed in the circumferential direction. The flywheel is clamped from different directions by the positioning rods which are uniformly distributed in the circumferential direction, so that the flywheel is quickly positioned, the center of the flywheel is aligned with the center of the rotating seat, and the preparation time before the flywheel is welded is reduced.

Description

Technical Field

[0001] This invention relates to the field of welding fixture technology, and in particular to a welding fixture for the production of automotive flywheel parts. Background Technology

[0002] In the production of automotive flywheel parts, not only are welding torches such as lasers or electric arcs required, but also fixtures to hold the flywheel parts in place. Welding fixtures are key equipment to ensure welding accuracy, efficiency, and consistency. Types of welding fixtures include: rotary welding fixtures, used for circumferential welds (such as flywheel and gear ring welding), equipped with servo motors to achieve 360° rotation, ensuring weld accessibility; multi-station fixtures, integrating pre-assembly, welding, and inspection stations to reduce turnaround time; and robot collaborative fixtures, designed with lightweight structures (such as aluminum alloy frames) to adapt to six-axis welding robot path planning.

[0003] During the use of the rotary welding fixture, we discovered that:

[0004] Existing rotary welding fixtures can only clamp the flywheel parts vertically. However, welding the flywheel requires the center alignment of the various parts. Existing rotary welding fixtures cannot achieve rapid alignment of the flywheel parts, resulting in low welding efficiency.

[0005] Therefore, we have proposed a welding fixture for the production of automotive flywheel parts. Summary of the Invention

[0006] In order to overcome the shortcomings mentioned in the background art, the present invention provides a welding fixture for the production of automobile flywheel parts.

[0007] The technical solution is as follows: A welding fixture for the production of automotive flywheel parts includes a mounting base, a rotating base rotatably connected to the mounting base, a fixed base fixedly connected to the mounting base, a sliding frame slidably connected to the fixed base, and a pressure shaft rotatably connected to the sliding frame. The mounting base is equipped with a motor, a hydraulic rod, and a welding torch. The telescopic end of the hydraulic rod is fixedly connected to the sliding frame. The output shaft of the motor is driven by a gear set to the rotating base. The pressure shaft is equipped with a positioning component. The positioning component includes a sliding base slidably connected to the pressure shaft. The sliding base is slidably connected to circumferentially evenly distributed positioning rods. The positioning rods are threadedly connected to threaded rods. The threaded rods are rotatably connected to the sliding base. The sliding base is rotatably connected to circumferentially evenly distributed fixed shafts. A rotating ring is rotatably connected to the sliding base. The fixed shaft and the rotating ring are driven by a gear ring. The fixed shaft and the adjacent threaded rod are driven by a bevel gear set.

[0008] Preferably, the sliding seat is slidably connected to a first limiting post, a first spring is provided between the first limiting post and the sliding seat, and the pressure shaft is provided with a first groove, which is used to limit the first limiting post.

[0009] Preferably, it further includes a fixing frame, which is fixedly connected to the mounting base. The fixing frame is slidably connected to a first sliding member. A second spring is provided between the first sliding member and the fixing frame. The first sliding member is fixedly connected to two first slide rails. The two first slide rails are jointly provided with a first mounting frame. The first mounting frame is fixedly connected to a cooling shell. The cooling shell is connected to an inlet pipe and an outlet pipe. Both the inlet pipe and the outlet pipe are connected to a circulating cooling device.

[0010] Preferably, the first mounting bracket is rotatably connected to two pulleys, and a belt is disposed between the two pulleys.

[0011] Preferably, the first sliding member is slidably connected to a second limiting post, a third spring is provided between the second limiting post and the first sliding member, and the fixing frame is provided with a second groove for limiting the second limiting post.

[0012] Preferably, the fixed frame is slidably connected to a second sliding member, the second sliding member is fixedly connected to two second slide rails, the two second slide rails are jointly provided with a second mounting frame, the second mounting frame is rotatably connected to two rollers, the second sliding member is slidably connected to a third limiting post, a fourth spring is provided between the third limiting post and the second sliding member, and the fixed frame is provided with a third groove, the third groove being used to limit the third limiting post.

[0013] Preferably, the system further includes a first electric push rod, which is fixedly connected to the first sliding member. A first pressing rod is fixedly connected to the telescopic end of the first electric push rod, and the first pressing rod is used to press the first mounting bracket. A second electric push rod is fixedly connected to the second sliding member, and a second pressing rod is fixedly connected to the telescopic end of the second electric push rod, and the second pressing rod is used to press the second mounting bracket. Both first slide rails are slidably connected to the first mounting bracket. A fifth spring is provided between the first sliding member and the first mounting bracket. Both second slide rails are slidably connected to the second mounting bracket. A sixth spring is provided between the second sliding member and the second mounting bracket.

[0014] Preferably, an anti-pressure pad is fixedly connected to the lower side of the pressure shaft.

[0015] Preferably, the water inlet pipe is connected to the side of the cooling shell away from the welding torch, and the water outlet pipe is connected to the side of the cooling shell close to the welding torch.

[0016] Preferably, the side of the cooling shell near the rotating seat is a curved surface that fits against the edge of the flywheel, and the curved surface is used to increase the contact area between the cooling shell and the flywheel.

[0017] The beneficial effects of this invention are: by using circumferentially evenly distributed positioning rods to clamp the flywheel from different directions, the flywheel can be quickly positioned so that the center of the flywheel is aligned with the center of the rotating seat, thus reducing the preparation time before welding the flywheel.

[0018] By introducing cooling water into the cooling shell, the heat generated during welding is quickly carried away, reducing the impact of high temperature on the flywheel performance. The flywheel also drives the belt to rotate, preventing the flywheel from directly rubbing against the cooling shell and reducing wear during heat exchange.

[0019] The first mounting bracket is moved by the first electric push rod, so that the position of the first mounting bracket changes according to the rotation speed of the flywheel during welding, so as to avoid contact with the belt before the weld point solidifies and ensure the welding quality. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a three-dimensional structural cross-sectional view of the pressure shaft and sliding seat of the present invention;

[0022] Figure 3 This is a three-dimensional structural diagram of the fixing frame and the first sliding member of the present invention;

[0023] Figure 4 This is a three-dimensional structural diagram of the first slide rail and the first mounting bracket of the present invention;

[0024] Figure 5 This is a three-dimensional structural cross-sectional view of the first mounting bracket and cooling shell of the present invention;

[0025] Figure 6 This is a three-dimensional structural diagram of the second slide rail and the second mounting bracket of the present invention.

[0026] The markings in the attached diagram are as follows: 1-Mounting base, 101-Motor, 2-Rotating base, 3-Fixed base, 4-Sliding frame, 5-Pressure shaft, 6-Sliding base, 7-Positioning rod, 8-Threaded rod, 9-Fixed shaft, 10-Rotating ring, 11-Hydraulic rod, 12-Welding torch, 13-First limiting post, 14-Fixed frame, 15-First sliding component, 16-First slide rail, 17-First mounting frame, 18-Cooling shell, 19-Inlet pipe, 20-Outlet pipe, 21-Pulley, 22-Belt, 23-Second limiting post, 24-Second sliding component, 25-Second slide rail, 26-Second mounting frame, 27-Roller, 28-Third limiting post, 29-First electric push rod, 30-First extrusion rod, 31-Second electric push rod, 32-Second extrusion rod. Detailed Implementation

[0027] 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.

[0028] Example 1

[0029] This embodiment discloses a welding fixture for the production of automotive flywheel parts, used for welding flywheels.

[0030] like Figure 1 and Figure 2As shown, the device includes a mounting base 1, a rotating base 2 rotatably connected to the upper side of the mounting base 1, a fixed base 3 fixedly connected to the upper side of the mounting base 1, and a sliding frame 4 slidably connected to the upper side of the fixed base 3. The sliding frame 4 is T-shaped, and a pressure shaft 5 is rotatably connected to the right side of the sliding frame 4. The pressure shaft 5 and the rotating base 2 cooperate to clamp the flywheel. An anti-pressure pad made of elastic material is fixedly connected to the lower side of the pressure shaft 5 to prevent the pressure shaft 5 from causing indentations on the flywheel when clamping it. The mounting base 1 is equipped with a motor 101, a hydraulic rod 11, and a welding torch 12. The motor 101 is located on the left side of the rotating base 2, and the welding torch 12 points towards the welding point of the flywheel. The telescopic end of the hydraulic rod 11 is fixedly connected to the left side of the sliding frame 4. The position of the sliding frame 4 can be changed by moving the telescopic end of the hydraulic rod 11. The output shaft of the motor 101 is driven by a gear set to the rotating base 2. The pressure shaft 5 is equipped with a positioning component, which is used to quickly position the various parts of the flywheel to reduce welding. The required preparation time is as follows: The positioning assembly includes a sliding seat 6, which is slidably connected to the pressure shaft 5. The sliding seat 6 is slidably connected to three circumferentially evenly distributed positioning rods 7. The positioning rods 7 can move horizontally on the lower side of the sliding seat 6. The positioning rods 7 are threadedly connected to threaded rods 8. The rotation of the threaded rods 8 can drive the positioning rods 7 to move, thereby changing the position of the positioning rods 7. The threaded rods 8 are rotatably connected to the sliding seat 6. The sliding seat 6 is rotatably connected to three circumferentially evenly distributed fixed shafts 9. The sliding seat 6 is rotatably connected to a rotating ring 10. The rotation of the rotating ring 10 drives the three positioning rods 7 to move synchronously, so as to ensure that the center of the circle where the three positioning rods 7 are located is kept on the axis of the rotating seat 2. Thus, when the three positioning rods 7 clamp the flywheel, the center of the flywheel can be moved to the axis of the rotating seat 2. The fixed shafts 9 and the rotating ring 10 are driven by a gear ring, and the fixed shafts 9 and the adjacent threaded rods 8 are driven by a bevel gear set.

[0031] like Figure 2 As shown, the sliding seat 6 is slidably connected to a first limiting post 13, which consists of a cylinder and a hemisphere. A first spring is provided between the first limiting post 13 and the sliding seat 6. The first spring is initially in a compressed state, thereby providing sufficient pressure to the first limiting post 13 to limit the sliding seat 6. The pressure shaft 5 is provided with a first groove, the depth of which is less than the radius of the hemisphere of the first limiting post 13. The first groove is used to limit the first limiting post 13.

[0032] Workflow:

[0033] When using this device, first place the flywheel part to be welded on the rotating seat 2, then move the sliding seat 6 downwards. The sliding seat 6 drives the positioning rod 7, threaded rod 8, fixed shaft 9, rotating ring 10, and first limiting post 13 to move downwards. The first limiting post 13 is squeezed by the pressure shaft 5, causing it to move. At the same time, the first limiting post 13 squeezes the adjacent first spring. The sliding seat 6 stops moving when it is blocked by the pressure shaft 5. Then rotate the rotating ring 10. The rotating ring 10 drives the three fixed shafts 9 to rotate through the gear ring and gears. The fixed shafts 9 drive the adjacent threaded rods 8 to rotate through the bevel gear set. When the threaded rods 8 rotate, they push the positioning rods 7 towards the pressure shaft 5 through the threads. The three positioning rods 7 clamp the flywheel from three directions, pushing the flywheel part to be welded to move relative to each other and align the flywheel parts. During this process, the flywheel part moves to the center of the circle where the three positioning rods 7 are located, that is, the center of the rotating seat 2, thereby achieving rapid positioning of the flywheel. After positioning is completed, rotate the rotating ring 10 again to make The rotating ring 10 drives the positioning rod 7 away from the pressure shaft 5. After the positioning rod 7 separates from the flywheel, the sliding seat 6 moves upward. The first limiting post 13 aligns with the first groove on the pressure shaft 5 and then stops moving the sliding seat 6. At this time, the first limiting post 13 is inserted into the first groove of the pressure shaft 5 under the action of the adjacent first spring, thereby fixing the sliding seat 6. Then the hydraulic rod 11 is started. The telescopic end of the hydraulic rod 11 drives the sliding frame 4 to move downward. The sliding frame 4 drives the pressure shaft 5 to move downward, so that the anti-pressure pad on the pressure shaft 5 contacts the flywheel. After the flywheel is fixed, the hydraulic rod 11 stops working. Then the motor 101 is started. The output shaft of the motor 101 drives the rotating seat 2 to rotate through the gear set. The rotating seat 2 drives the flywheel to rotate. The flywheel drives the pressure shaft 5 to rotate. Then the welding torch 12 is started to weld the flywheel. After welding is completed, the welding torch 12 and the motor 101 are turned off. Then the hydraulic rod 11 is started again. The telescopic end of the hydraulic rod 11 extends and drives the pressure shaft 5 to separate from the flywheel. Finally, the flywheel can be removed.

[0034] Example 2

[0035] This embodiment discloses a welding fixture for the production of automotive flywheel parts, which, based on Embodiment 1, also has the function of cooling the flywheel during welding.

[0036] like Figures 3-5As shown, it also includes a fixing frame 14, which is fixedly connected to the mounting base 1. A first sliding member 15 is slidably connected to the front side of the fixing frame 14. A second spring is provided between the first sliding member 15 and the fixing frame 14. The second spring is used to push the first sliding member 15 to move and drive the cooling shell 18 to fit against the edge of the flywheel. The first sliding member 15 is fixedly connected to two first slide rails 16. Both first slide rails 16 are arc-shaped, and the centers of the two first slide rails 16 coincide with the center of the rotating base 2, thereby causing the mounting frame 17 to rotate around the central axis of the rotating base 2, thus keeping the cooling shell 18 in contact with the edge of the flywheel. The first slide rail 16 is provided with a first mounting bracket 17, and a cooling shell 18 is fixedly connected to the first mounting bracket 17. The cooling shell 18 is connected to an inlet pipe 19 and an outlet pipe 20. Both the inlet pipe 19 and the outlet pipe 20 are connected to a circulating cooling device. The circulating cooling device is an existing device used to provide cooling water to the inlet pipe 19 and to cool the water entering the circulating cooling device from the outlet pipe 20. It will not be described in detail here. The side of the cooling shell 18 near the rotating seat 2 is a curved surface that fits against the edge of the flywheel. The curved surface is used to increase the contact area between the cooling shell 18 and the flywheel, thereby improving the heat exchange effect between the cooling shell 18 and the flywheel.

[0037] like Figure 4 and Figure 5 As shown, the first mounting bracket 17 is rotatably connected to two pulleys 21, and a belt 22 is provided between the two pulleys 21. The belt 22 is made of a thermally conductive material, such as a silicone-based composite material, which has the properties of thermal conductivity, flexibility and high temperature resistance. The belt 22 and the cooling shell 18 are coated with a lubricating material to reduce the friction between them. The flywheel drives the belt 22 to rotate, thereby reducing the friction between the flywheel and the cooling shell 18 and ensuring the integrity of the flywheel.

[0038] like Figure 4 As shown, the first sliding member 15 is slidably connected to the second limiting post 23. The second limiting post 23 is composed of a cylinder and a hemisphere. A third spring is provided between the second limiting post 23 and the first sliding member 15. The third spring is initially in a compressed state, so that the second limiting post 23 can be inserted into the second groove after being aligned with it. The elastic force generated by the second spring adjacent to the first sliding member 15 after compression cannot overcome the force of the second limiting post 23 on the first sliding member 15. The fixing frame 14 is provided with a second groove, which is used to limit the second limiting post 23.

[0039] like Figure 3 and Figure 6As shown, a second sliding member 24 is slidably connected to the rear side of the fixed frame 14. The second sliding member 24 is fixedly connected to two second slide rails 25. The shapes of the second sliding member 24 and the second slide rails 25 are the same as those of the first sliding member 15 and the first slide rail 16. The two second slide rails 25 are jointly provided with a second mounting frame 26. The second mounting frame 26 is rotatably connected to two rollers 27. The diameter of the rollers 27 is equal to the diameter of the outer side of the bend of the belt 22. The second sliding member 24 is slidably connected to a third limiting post 28. The third limiting post 28 is the same as the second limiting post 23. A fourth spring is provided between the third limiting post 28 and the second sliding member 24. The fourth spring is the same as the third spring, so that the pressure of the two rollers 27 on the flywheel and the pressure of the belt 22 on the flywheel are equal in magnitude and opposite in direction, thereby canceling each other out, reducing the lateral thrust on the flywheel and reducing the probability of position displacement during the flywheel welding process. The fixed frame 14 is provided with a third groove, which is used to limit the third limiting post 28.

[0040] Workflow:

[0041] Before placing the flywheel, pull the first sliding member 15 forward. The first sliding member 15 compresses the adjacent second spring. When the second limiting post 23 is aligned with the second groove on the fixing frame 14, the second limiting post 23 is inserted into the second groove under the action of the adjacent third spring, thereby limiting the first sliding member 15. After the flywheel is fixed, move the first sliding member 15 backward. The second spring gradually extends as the first sliding member 15 moves. The first sliding member 15 drives the first mounting frame 17 to move backward through the first slide rail 16. The first mounting frame 17 drives the belt 22 to move through the two pulleys 21. When the belt 22 contacts the flywheel, the first sliding member 15 stops moving. Then, start the circulating cooling device. Cooling water enters the cooling shell 18 from the inlet pipe 19 and returns to the circulating cooling device from the outlet pipe 20. During the welding process, the flywheel rotates, which drives the belt 22 to rotate. The belt 22 drives the pulley 21 to rotate. The flywheel exchanges heat with the cooling water through the belt 22 and the cooling shell 18, thereby quickly removing the heat near the weld point and reducing the impact of high temperature on the flywheel performance.

[0042] Example 3

[0043] This embodiment discloses a welding fixture for the production of automotive flywheel parts, which is a further improvement on embodiment 2.

[0044] like Figures 3-6As shown, it also includes a first electric push rod 29, which is fixedly connected to the first sliding member 15. A first pressing rod 30 is fixedly connected to the telescopic end of the first electric push rod 29. The first pressing rod 30 is used to press the first mounting bracket 17. By pressing the first mounting bracket 17 with the first pressing rod 30, the position of the first mounting bracket 17 is changed, thereby adjusting the distance between the belt 22 and the welding point. A second electric push rod 31 is fixedly connected to the second sliding member 24. A second pressing rod 32 is fixedly connected to the telescopic end of the second electric push rod 31. The second pressing rod 32 is used to press the second mounting bracket 26. The second mounting bracket 26 is squeezed to change its position, so that the second mounting bracket 26 and the first mounting bracket 17 are always in a centrally symmetrical position. Both first slide rails 16 are slidably connected to the first mounting bracket 17. A fifth spring is provided between the first sliding member 15 and the first mounting bracket 17. The fifth spring is used to keep the first mounting bracket 17 in contact with the first extrusion rod 30. Both second slide rails 25 are slidably connected to the second mounting bracket 26. A sixth spring is provided between the second sliding member 24 and the second mounting bracket 26. The sixth spring is used to keep the second mounting bracket 26 in contact with the second extrusion rod 32.

[0045] Workflow:

[0046] When different weld widths lead to different welding speeds, the output shaft of motor 101 rotates faster, and the linear velocity of the flywheel edge increases within the same time. At this time, the weld point will contact the belt 22 earlier. However, contact with the belt 22 before the weld point solidifies will affect the welding effect. Therefore, while the output shaft of motor 101 rotates faster, the telescopic end of the first electric push rod 29 shortens, driving the first extrusion rod 30 to move. The first extrusion rod 30 extrudes the first mounting frame 17 to move, and the first mounting frame 17 compresses the adjacent fifth spring, thereby causing the first mounting frame 17 to drive the belt 22 to move away from the weld point, allowing the weld point enough time to solidify. While the first electric push rod 29 is working, the second electric push rod 31 moves synchronously, so that the second mounting frame 26 maintains a symmetrical relationship with the first mounting frame 17, so as to avoid the flywheel from shifting due to unilateral force.

[0047] Example 4

[0048] This embodiment discloses a welding fixture for the production of automotive flywheel parts. Based on embodiment 2, the position of the water inlet pipe 19 and water outlet pipe 20 communicating with the cooling shell 18 is further improved to enable it to have a gradual cooling function.

[0049] like Figure 5As shown, the water inlet pipe 19 is connected to the side of the cooling shell 18 away from the welding torch 12, and the water outlet pipe 20 is connected to the side of the cooling shell 18 closer to the welding torch 12. This allows the cooling water to first exchange heat with the area away from the welding point, and then exchange heat with the area closer to the welding point after the temperature rises, gradually cooling the flywheel and preventing the temperature from dropping too quickly. The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A welding fixture for producing automobile flywheel parts, comprising a mounting base (1), wherein the mounting base (1) is rotatably connected to a rotating base (2), the mounting base (1) is fixedly connected to a fixed base (3), the fixed base (3) is slidably connected to a sliding frame (4), the sliding frame (4) is rotatably connected to a pressure shaft (5), the mounting base (1) is provided with a motor (101), a hydraulic rod (11) and a welding torch (12), the telescopic end of the hydraulic rod (11) is fixedly connected to the sliding frame (4), and the output shaft of the motor (101) is driven to the rotating base (2) via a gear set, characterized in that, The pressure shaft (5) is equipped with a positioning component; The positioning assembly includes a sliding seat (6), which is slidably connected to the pressure shaft (5). The sliding seat (6) is slidably connected to a circumferentially evenly distributed positioning rod (7). The positioning rod (7) is threadedly connected to a threaded rod (8). The threaded rod (8) is rotatably connected to the sliding seat (6). The sliding seat (6) is rotatably connected to a circumferentially evenly distributed fixed shaft (9). The sliding seat (6) is rotatably connected to a rotating ring (10). The fixed shaft (9) and the rotating ring (10) are driven by a gear ring. The fixed shaft (9) and the adjacent threaded rod (8) are driven by a bevel gear set. It also includes a fixing frame (14), which is fixedly connected to the mounting base (1). The fixing frame (14) is slidably connected to a first sliding member (15). A second spring is provided between the first sliding member (15) and the fixing frame (14). The first sliding member (15) is fixedly connected to two first slide rails (16). The two first slide rails (16) are jointly provided with a first mounting frame (17). The first mounting frame (17) is fixedly connected to a cooling shell (18). The cooling shell (18) is connected to an inlet pipe (19) and an outlet pipe (20). The inlet pipe (19) and the outlet pipe (20) are both connected to a circulating cooling device. The first sliding member (15) is slidably connected to the second limiting post (23), and a third spring is provided between the second limiting post (23) and the first sliding member (15). The fixing frame (14) is provided with a second groove, which is used to limit the second limiting post (23). The fixed frame (14) is slidably connected to a second sliding member (24), the second sliding member (24) is fixedly connected to two second slide rails (25), the two second slide rails (25) are jointly provided with a second mounting frame (26), the second mounting frame (26) is rotatably connected to two rollers (27), the second sliding member (24) is slidably connected to a third limiting post (28), a fourth spring is provided between the third limiting post (28) and the second sliding member (24), the fixed frame (14) is provided with a third groove, the third groove is used to limit the third limiting post (28).

2. A welding fixture for producing automotive flywheel parts according to claim 1, characterized in that, The sliding seat (6) is slidably connected to a first limiting post (13), and a first spring is provided between the first limiting post (13) and the sliding seat (6). The pressure shaft (5) is provided with a first groove, which is used to limit the first limiting post (13).

3. A welding fixture for producing automotive flywheel parts according to claim 2, characterized in that, The first mounting bracket (17) is rotatably connected to two pulleys (21), and a belt (22) is provided between the two pulleys (21).

4. A welding fixture for producing automotive flywheel parts according to claim 3, characterized in that, It also includes a first electric push rod (29), which is fixed to the first sliding member (15). The telescopic end of the first electric push rod (29) is fixed to a first pressing rod (30), which is used to press the first mounting bracket (17). The second sliding member (24) is fixed to a second electric push rod (31), which is fixed to the telescopic end of the second electric push rod (31) and a second pressing rod (32), which is used to press the second mounting bracket (26). Both first slide rails (16) are slidably connected to the first mounting bracket (17). A fifth spring is provided between the first sliding member (15) and the first mounting bracket (17). Both second slide rails (25) are slidably connected to the second mounting bracket (26). A sixth spring is provided between the second sliding member (24) and the second mounting bracket (26).

5. A welding fixture for producing automotive flywheel parts according to claim 4, characterized in that, A pressure-resistant pad is fixed to the lower side of the pressure shaft (5).

6. A welding fixture for producing automotive flywheel parts according to claim 5, characterized in that, The water inlet pipe (19) is connected to the side of the cooling shell (18) away from the welding torch (12), and the water outlet pipe (20) is connected to the side of the cooling shell (18) close to the welding torch (12).

7. A welding fixture for producing automotive flywheel parts according to claim 6, characterized in that, The side of the cooling shell (18) near the rotating seat (2) is a curved surface that fits into the edge of the flywheel. The curved surface is used to increase the contact area between the cooling shell (18) and the flywheel.

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