Friction stir welding device for hub manufacturing

Abstract

The invention relates to the technical field of hub manufacturing friction stir welding, in particular to a hub manufacturing friction stir welding device which comprises a supporting table, a supporting disc is movably mounted at the top of the supporting table, a clamping assembly is mounted at the top of the supporting disc, and a hub is fixedly mounted at the top of the supporting disc. The clamping assembly is located on the inner wall of the inner ring of the hub, a rotating assembly is installed between the supporting table and the supporting disc, an electric push rod is fixedly installed on the side, away from the supporting disc, of the top of the supporting table, a first supporting block is fixedly installed on the top of the electric push rod, and a second supporting block is movably installed at the front end of the first supporting block. And the top of the second supporting block is fixedly connected with a second mounting block. According to the hub welding device, a hub can be effectively fixed by arranging the clamping assembly, the hub can be conveniently rotated by the rotating assembly, a device for friction stir welding and collecting chippings is arranged, and the hub welding quality, efficiency and environmental friendliness are improved.

Description

Technical Field

[0001] The invention relates to the technical field of friction stir welding for wheel hub manufacturing, and in particular to a friction stir welding device for wheel hub manufacturing. Background Art

[0002] With the development of society, cars play an increasingly important role in people's lives. As an important part of a car, the quality and performance of the car's wheel hub directly affect the driving safety and comfort of the car. The wheel hub is mainly composed of the rim and spokes. It not only supports the weight of the entire vehicle, but also bears various impacts and frictions from the road. Therefore, the quality and performance of the wheel hub are crucial.

[0003] During the wheel manufacturing process, the rim and spokes are usually welded. This is because welding can firmly combine the rim and spokes together, improving the overall strength and stability of the wheel. At the same time, welding can also connect rims and spokes of different shapes and sizes to meet the needs of different models.

[0004] However, in the existing wheel hub welding technology, there is a problem of unstable wheel hub fixation. This will cause the wheel hub to shake easily during welding, affecting the welding quality and accuracy. In addition, unstable fixation may also cause safety hazards during welding, threatening the life safety of operators. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings in the prior art and to propose a wheel hub manufacturing friction stir welding device.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a wheel hub manufacturing friction stir welding device, comprising a support platform, a support disk is movably installed on the top of the support platform, a clamping assembly is installed on the top of the support disk, a wheel hub is fixedly installed on the top of the support disk, the clamping assembly is located on the inner wall of the inner ring of the wheel hub, a rotating assembly is installed between the support platform and the support disk, an electric push rod is fixedly installed on the top of the support platform away from the support disk, a first support block is fixedly installed on the top of the electric push rod, a second support block is movably installed on the front end of the first support block, a second mounting block is fixedly connected to the top of the second support block, a second driving motor is fixedly installed on the top of the second mounting block, a driving shaft is fixedly installed on the output end of the second driving motor, the driving shaft passes through the second mounting block, a drill bit is fixedly installed on the bottom of the driving shaft, and the drill bit passes through the second support block; The clamping assembly includes a first mounting block, a slide groove, a slider, a connecting rod and an inner support block. The first mounting block is fixedly connected to the center position of the top of the support plate. The slide groove is opened inside the first mounting block. There are multiple slide grooves distributed in a ring shape. The slider is slidably installed inside the slide groove. The connecting rod is fixedly connected to the outer wall of the slider. The inner support block is fixedly connected to the end of the connecting rod away from the slider. The inner support block fits the inner wall of the wheel hub.

[0007] A spring is fixedly connected between the inner wall of the slide groove and the outer wall of the slider, an annular air channel is opened inside the first mounting block, the annular air channel connects multiple first mounting blocks, an air inlet nozzle is fixedly installed inside the first mounting block, the air inlet nozzle and the annular air channel are connected to each other, and an electromagnetic valve is fixedly installed inside the air inlet nozzle.

[0008] The rotating assembly includes a first protective cover, a first drive motor, a gear and a tooth groove. The first protective cover is fixedly connected to the outer wall of the support platform. The first drive motor is fixedly installed inside the first protective cover. The output end of the first drive motor is fixedly installed. The outer wall of the support plate is provided with a tooth groove, and the gear and the tooth groove are meshed with each other.

[0009] An annular mounting groove is provided on the top of the support platform, a roller is movably installed inside the annular mounting groove, the bottom of the support plate fits with the top of the roller, a center axis is fixedly connected to the top of the support platform, and the center axis passes through the center position of the support plate and the first mounting block.

[0010] The outer wall of the driving shaft is fixedly connected with a paddle, and the paddle is located inside the second mounting block, one side of the second mounting block is fixedly connected with an air inlet pipe, and the side of the second mounting block away from the air inlet pipe is fixedly connected with an exhaust pipe, and the air outlet end of the exhaust pipe is fixedly connected to the second supporting block, and a first air cavity is defined inside the second supporting block, and the air outlet end of the first air cavity is aligned with the right side of the drill bit, and a second air cavity is defined inside the second supporting block, and the air inlet end of the second air cavity is aligned with the left side of the drill bit.

[0011] A storage box is slidably mounted on the bottom of the second air cavity, a filter slot is provided on the outer wall of the storage box, and there are multiple filter slots. Bolts are bolted between the storage box and the second support block.

[0012] A sliding rod is fixedly connected to one side of the front end of the first support block, a sliding hole corresponding to the sliding rod is opened on one side of the second support block, a screw rod is movably installed on the side of the front end of the first support block away from the sliding rod, a screw hole corresponding to the screw rod is opened on the side of the second support block away from the sliding hole, and a handle is fixedly connected to the front end of the screw rod.

[0013] A support rod is fixedly connected to the top of the support platform, and there are two support rods. The two support rods are located on both sides of the electric push rod, and the inner wall of the first support block is provided with openings corresponding to the support rods.

[0014] A second protective cover is fixedly connected to the top of the first supporting block, and the second driving motor is fixedly installed inside the second protective cover.

[0015] The present invention has the following beneficial effects: Compared with the prior art, the device is provided with a support plate, a first mounting block, a slide groove, a slider, an inner support block, an annular airway and an air inlet nozzle. When in use, the wheel hub is placed on the support plate, the first mounting block is located in the inner ring of the wheel hub, and then the electromagnetic valve is opened to inject gas into the annular airway through the air inlet nozzle. The gas then enters the inside of the slide groove, pushing the slider to slide outward on the inner wall of the slide groove, so that the inner support block is closely attached to the inner wall of the inner ring of the wheel hub. The present invention can ensure the stability of the wheel hub during the welding process, prevent the wheel hub from shaking during the welding process, improve the welding quality and precision, and reduce the defective rate.

[0016] Compared with the prior art, the device is provided with a support plate, a wheel hub, a first drive motor, a gear, a tooth groove and a drill bit. When in use, the first drive motor is started, the first drive motor drives the gear to rotate, the gear and the tooth groove of the outer wall of the support plate are meshed with each other, and the support plate and the wheel hub are driven to rotate. The drill bit is used to perform annular friction stir welding. The present invention can perform welding fully automatically, improve the stability and quality of welding, and reduce the difficulty of manual operation.

[0017] Compared with the prior art, the present device is provided with a second drive motor, a drive shaft, a drill bit, a second mounting block, a paddle, an air inlet pipe, an exhaust pipe, a first air cavity, a second air cavity, a storage box and a filter tank. When in use, the second drive motor is started, and the second drive motor drives the drive shaft and the drill bit to perform friction stir welding. At the same time, the paddle on the outer wall of the drive shaft rotates to generate airflow. The airflow enters the second mounting block through the air inlet pipe, and then enters the first air cavity through the exhaust pipe to cool and clean the right side of the drill bit. The debris generated by welding is driven by the airflow into the second air cavity and finally falls into the storage box. The filter tank on the outer wall of the storage box prevents the debris from flying out again. The present invention can collect debris while realizing friction stir welding, keep the working environment clean, and reduce the harm to the operator. The benefit is that the environmental protection and safety of welding are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention from a first viewing angle; Figure 2 It is a schematic diagram of the structure of the second viewing angle of the present invention; Figure 3 It is a schematic diagram of the structure when the present invention is used; Figure 4 It is a schematic diagram of the exploded structure of the clamping assembly and the rotating assembly in the present invention; Figure 5 for Figure 4 The enlarged structural diagram at A in the middle; Figure 6 It is a schematic diagram of some structures in the present invention; Figure 7 for Figure 6 The enlarged structural diagram at B in the middle; Figure 8 It is a schematic diagram of the explosion structure of part of the structure in the present invention.

[0019] Legend: 1. Support platform; 2. Support plate; 3. Clamping assembly; 301. First mounting block; 302. Slide groove; 303. Sliding block; 304. Connecting rod; 305. Inner support block; 306. Spring; 307. Annular airway; 308. Air inlet nozzle; 4. Wheel hub; 5. Rotating assembly; 501. First protective cover; 502. First driving motor; 503. Gear; 504. Tooth groove; 505. Annular mounting groove; 506. Roller; 507. Center axis; 6. Electric push rod; 7. First support block; 8. Second support block; 9. Second drive motor; 10. Drive shaft; 11. Drill bit; 12. Second mounting block; 13. Paddle; 14. Air inlet pipe; 15. Air exhaust pipe; 16. First air cavity; 17. Second air cavity; 18. Storage box; 19. Filter tank; 20. Bolt; 21. Slide rod; 22. Slide hole; 23. Screw rod; 24. Screw hole; 25. Handle; 26. Support rod; 27. Second protective cover. DETAILED DESCRIPTION

[0020] Reference Figure 1-8The present invention provides a wheel hub manufacturing friction stir welding device: comprising a support platform 1, a support plate 2 is movably mounted on the top of the support platform 1, a clamping assembly 3 is mounted on the top of the support plate 2, a wheel hub 4 is fixedly mounted on the top of the support plate 2, the clamping assembly 3 is located on the inner wall of the inner ring of the wheel hub 4, a rotating assembly 5 is mounted between the support platform 1 and the support plate 2, an electric push rod 6 is fixedly mounted on the side of the top of the support platform 1 away from the support plate 2, a first support block 7 is fixedly mounted on the top of the electric push rod 6, a second support block 8 is movably mounted on the front end of the first support block 7, a second mounting block 12 is fixedly connected to the top of the second support block 8, a second drive motor 9 is fixedly mounted on the top of the second mounting block 12, and an output end of the second drive motor 9 is fixedly mounted on the output end of the second drive motor 9. A driving shaft 10 is fixedly installed, and the driving shaft 10 passes through the second mounting block 12. A drill bit 11 is fixedly installed at the bottom of the driving shaft 10, and the drill bit 11 passes through the second support block 8; the clamping assembly 3 includes a first mounting block 301, a slide groove 302, a slider 303, a connecting rod 304 and an inner support block 305. The first mounting block 301 is fixedly connected to the center position of the top of the support disk 2, the slide groove 302 is opened inside the first mounting block 301, and the slide groove 302 has multiple annular distributions. The slider 303 is slidably installed inside the slide groove 302, the connecting rod 304 is fixedly connected to the outer wall of the slider 303, the inner support block 305 is fixedly connected to the end of the connecting rod 304 away from the slider 303, and the inner support block 305 fits the inner wall of the hub 4.

[0021] When in use, the wheel hub 4 is placed on the support plate 2. Since there are multiple slide grooves 302 distributed in a ring shape inside the first mounting block 301, the slider 303 can slide in the slide groove 302, thereby driving the connecting rod 304 and the inner support block 305 to move toward the inner wall of the wheel hub 4, so that the inner support block 305 fits against the inner wall of the wheel hub 4, and supports and fixes from the inner wall of the inner ring of the wheel hub 4 to prevent the wheel hub 4 from shaking during the welding process. Then, the second support block 8 is controlled to move back and forth, and at the same time, the drill bit 11 is driven to move to the welding position through the second support block 8. Then, the second drive motor 9 is turned on to drive the drill bit 11 to rotate, and then the electric push rod 6 is turned on to drive the drill bit 11 to move downward and enter the wheel hub 4 for stir friction welding. Then, the rotating assembly 5 is turned on to drive the wheel hub 4 to rotate, and annular welding can be achieved.

[0022] A spring 306 is fixedly connected between the inner wall of the slide groove 302 and the outer wall of the slider 303. An annular air channel 307 is opened inside the first mounting block 301. The annular air channel 307 connects multiple first mounting blocks 301. An air inlet nozzle 308 is fixedly installed inside the first mounting block 301. The air inlet nozzle 308 and the annular air channel 307 are connected to each other. An electromagnetic valve is fixedly installed inside the air inlet nozzle 308.

[0023] When in use, open the electromagnetic valve and inject gas into the annular airway 307 through the air inlet nozzle 308. The gas then enters the interior of the wheel hub 4, pushing the slider 303 to slide outward on the inner wall of the slide groove 302, so that the inner support block 305 is tightly attached to the inner wall of the inner ring of the wheel hub 4, ensuring the stability of the wheel hub 4 during the welding process; when it is necessary to remove the wheel hub 4, open the air inlet nozzle 308 to discharge the air pressure in the annular airway 307, and then through the pulling force of the spring 306, drive the inner support block 305 to retract, and then the wheel hub 4 can be removed.

[0024] The rotating assembly 5 includes a first protective cover 501, a first drive motor 502, a gear 503 and a tooth groove 504. The first protective cover 501 is fixedly connected to the outer wall of the support platform 1, the first drive motor 502 is fixedly installed inside the first protective cover 501, the output end of the first drive motor 502 is fixedly installed, and the outer wall of the support plate 2 is provided with a tooth groove 504, and the gear 503 and the tooth groove 504 are meshed with each other.

[0025] When in use, the first driving motor 502 drives the gear 503 to rotate, and the gear 503 meshes with the tooth groove 504 on the outer wall of the supporting plate 2, thereby driving the supporting plate 2 and the wheel hub 4 to rotate.

[0026] An annular mounting groove 505 is provided at the top of the support platform 1, and a roller 506 is movably installed inside the annular mounting groove 505. The bottom of the support plate 2 fits with the top of the roller 506. A central axis 507 is fixedly connected to the top of the support platform 1, and the central axis 507 passes through the center position of the support plate 2 and the first mounting block 301.

[0027] When in use, the roller 506 can reduce the friction force when the support disk 2 rotates, making the support disk 2 rotate more smoothly. The central shaft 507 plays a role of positioning and supporting, ensuring the stability of the support disk 2 and the hub 4 during rotation, reducing the friction force during rotation, and improving the efficiency and stability of rotation.

[0028] The outer wall of the driving shaft 10 is fixedly connected with a paddle 13, and the paddle 13 is located inside the second mounting block 12. An air inlet pipe 14 is fixedly connected to one side of the second mounting block 12, and an exhaust pipe 15 is fixedly connected to the side of the second mounting block 12 away from the air inlet pipe 14. The air outlet end of the exhaust pipe 15 is fixedly connected to the second supporting block 8. A first air cavity 16 is opened inside the second supporting block 8, and the air outlet end of the first air cavity 16 is aligned with the right side of the drill bit 11. A second air cavity 17 is opened inside the second supporting block 8, and the air inlet end of the second air cavity 17 is aligned with the left side of the drill bit 11.

[0029] When in use, the second drive motor 9 drives the drive shaft 10 and the drill bit 11 to perform friction stir welding, and the blade 13 rotates to generate airflow. The airflow enters the second mounting block 12 through the air inlet pipe 14, and then enters the first air cavity 16 through the exhaust pipe 15 to cool and clean the right side of the drill bit 11. At the same time, the debris generated by welding is driven by the airflow into the second air cavity 17, which improves the efficiency and quality of welding.

[0030] A storage box 18 is slidably mounted at the bottom of the second air cavity 17 . A filter slot 19 is provided on the outer wall of the storage box 18 . There are multiple filter slots 19 . Bolts 20 are installed between the storage box 18 and the second support block 8 .

[0031] When in use, the debris entering the second air cavity 17 eventually falls into the storage box 18, and the filter slot 19 on the outer wall of the storage box 18 can prevent the debris from flying out again. When the storage box 18 needs to be cleaned, the bolt 20 can be unscrewed to take out the storage box 18 for cleaning, which can conveniently collect and clean the debris generated by welding, keep the working environment clean, and reduce the harm to the operator.

[0032] A slide rod 21 is fixedly connected to one side of the front end of the first support block 7, a slide hole 22 corresponding to the slide rod 21 is opened on one side of the second support block 8, a screw rod 23 is movably installed on the side of the front end of the first support block 7 away from the slide rod 21, a screw hole 24 corresponding to the screw rod 23 is opened on the side of the second support block 8 away from the slide hole 22, and a handle 25 is fixedly connected to the front end of the screw rod 23.

[0033] When in use, the handle 25 is turned to drive the screw rod 23 to rotate. Since the screw rod 23 cooperates with the screw hole 24 on the second support block 8, and cooperates with the slide rod 21 through the slide hole 22, the second support block 8 can be moved forward and backward, thereby adjusting the front and rear position of the drill bit 11. The welding position can be adjusted according to the size of the different hubs 4, which improves the versatility of the device.

[0034] A support rod 26 is fixedly connected to the top of the support platform 1 . There are two support rods 26 . The two support rods 26 are located on both sides of the electric push rod 6 . The inner wall of the first support block 7 is provided with openings corresponding to the support rods 26 .

[0035] When in use, the support rod 26 supports and guides the first support block 7, ensuring the stability of the first support block 7 during the up and down movement, and ensuring the safety and reliability of the welding process.

[0036] A second protective cover 27 is fixedly connected to the top of the first supporting block 7 , and the second driving motor 9 is fixedly installed inside the second protective cover 27 .

[0037] When in use, the second protective cover 27 can protect the second drive motor 9 from the influence of the external environment, thereby extending the service life of the second drive motor 9.

[0038] Working principle: First, place the wheel hub 4 on the support plate 2, with the first mounting block 301 located in the inner ring of the wheel hub 4, then open the electromagnetic valve, and inject gas into the annular airway 307 through the air inlet nozzle 308. The gas then enters the interior of the wheel hub 4, pushing the slider 303 to slide outward on the inner wall of the slide groove 302, so that the inner support block 305 is tightly attached to the inner wall of the inner ring of the wheel hub 4, ensuring the stability of the wheel hub 4 during the welding process.

[0039] Then, turn the handle 25 to drive the screw rod 23 to rotate. Since the screw rod 23 cooperates with the screw hole 24 on the second support block 8, and cooperates with the slide rod 21 through the slide hole 22, the second support block 8 can be moved forward and backward. According to the size of the different wheel hubs 4, the front and rear positions of the second support block 8 are adjusted to move the drill bit 11 between the rim and the spokes.

[0040] Next, the electric push rod 6 is turned on to drive the drill bit 11 to move downward and enter the wheel hub 4 to perform friction stir welding.

[0041] Then, the second drive motor 9 is started, and the second drive motor 9 drives the drive shaft 10 and the drill bit 11 to perform friction stir welding. At the same time, the blades 13 on the outer wall of the drive shaft 10 rotate to generate airflow. The airflow enters the second mounting block 12 through the air inlet pipe 14, and then enters the first air cavity 16 through the exhaust pipe 15 to cool and clean the right side of the drill bit 11. The debris generated by welding is driven by the airflow into the second air cavity 17 and finally falls into the storage box 18. The filter slot 19 on the outer wall of the storage box 18 prevents the debris from flying out again.

[0042] Finally, the first drive motor 502 is started, the first drive motor 502 drives the gear 503 to rotate, the gear 503 is meshed with the tooth groove 504 on the outer wall of the support plate 2, and the support plate 2 and the hub 4 are driven to rotate. The drill bit 11 is used to perform annular friction stir welding.

[0043] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A wheel hub manufacturing friction stir welding device, comprising a support table (1), characterized in that: A support plate (2) is movably mounted on the top of the support platform (1), a clamping assembly (3) is mounted on the top of the support plate (2), a wheel hub (4) is fixedly mounted on the top of the support plate (2), the clamping assembly (3) is located on the inner wall of the inner ring of the wheel hub (4), a rotating assembly (5) is mounted between the support platform (1) and the support plate (2), an electric push rod (6) is fixedly mounted on the side of the top of the support platform (1) away from the support plate (2), and a first support block (7) is fixedly mounted on the top of the electric push rod (6). ), a second support block (8) is movably mounted on the front end of the first support block (7), a second mounting block (12) is fixedly connected to the top of the second support block (8), a second drive motor (9) is fixedly mounted on the top of the second mounting block (12), a drive shaft (10) is fixedly mounted on the output end of the second drive motor (9), the drive shaft (10) passes through the second mounting block (12), a drill bit (11) is fixedly mounted on the bottom of the drive shaft (10), and the drill bit (11) passes through the second support block (8); The clamping assembly (3) comprises a first mounting block (301), a slide groove (302), a slider (303), a connecting rod (304) and an inner support block (305); the first mounting block (301) is fixedly connected to the center position of the top of the support plate (2); the slide groove (302) is arranged inside the first mounting block (301); the slide groove (302) has a plurality of annularly distributed sections; the slider (303) is slidably mounted inside the slide groove (302); the connecting rod (304) is fixedly connected to the outer wall of the slider (303); the inner support block (305) is fixedly connected to one end of the connecting rod (304) away from the slider (303); and the inner support block (305) is fitted to the inner wall of the wheel hub (4).

2. A wheel hub manufacturing friction stir welding device according to claim 1, characterized in that: A spring (306) is fixedly connected between the inner wall of the slide groove (302) and the outer wall of the slider (303); an annular air channel (307) is provided inside the first mounting block (301); the annular air channel (307) connects a plurality of first mounting blocks (301); an air inlet nozzle (308) is fixedly installed inside the first mounting block (301); the air inlet nozzle (308) and the annular air channel (307) are connected to each other; and an electromagnetic valve is fixedly installed inside the air inlet nozzle (308).

3. The wheel hub manufacturing friction stir welding device according to claim 1, characterized in that: The rotating assembly (5) comprises a first protective cover (501), a first drive motor (502), a gear (503) and a tooth groove (504); the outer wall of the support platform (1) is fixedly connected to the first protective cover (501); the first drive motor (502) is fixedly installed inside the first protective cover (501); the output end of the first drive motor (502) is fixedly installed with a gear (503); the outer wall of the support plate (2) is provided with a tooth groove (504); the gear (503) and the tooth groove (504) are meshed with each other.

4. The wheel hub manufacturing friction stir welding device according to claim 1, characterized in that: The top of the support platform (1) is provided with an annular mounting groove (505), a roller (506) is movably mounted inside the annular mounting groove (505), the bottom of the support plate (2) is in contact with the top of the roller (506), and the top of the support platform (1) is fixedly connected with a central axis (507), and the central axis (507) passes through the center position of the support plate (2) and the first mounting block (301).

5. The wheel hub manufacturing friction stir welding device according to claim 1, characterized in that: The outer wall of the driving shaft (10) is fixedly connected with a blade (13), the blade (13) is located inside the second mounting block (12), one side of the second mounting block (12) is fixedly connected with an air inlet pipe (14), the side of the second mounting block (12) away from the air inlet pipe (14) is fixedly connected with an air exhaust pipe (15), the air outlet end of the air exhaust pipe (15) is fixedly connected to the second supporting block (8), a first air cavity (16) is provided inside the second supporting block (8), the air outlet end of the first air cavity (16) is aligned with the right side of the drill bit (11), and a second air cavity (17) is provided inside the second supporting block (8), the air inlet end of the second air cavity (17) is aligned with the left side of the drill bit (11).

6. The wheel hub manufacturing friction stir welding device according to claim 5, characterized in that: A storage box (18) is slidably mounted at the bottom of the second air cavity (17); a filter slot (19) is provided on the outer wall of the storage box (18); there are a plurality of filter slots (19); and bolts (20) are bolted between the storage box (18) and the second support block (8).

7. The wheel hub manufacturing friction stir welding device according to claim 1, characterized in that: A sliding rod (21) is fixedly connected to one side of the front end of the first support block (7), a sliding hole (22) corresponding to the sliding rod (21) is provided on one side of the second support block (8), a screw rod (23) is movably mounted on the side of the front end of the first support block (7) away from the sliding rod (21), a screw hole (24) corresponding to the screw rod (23) is provided on the side of the second support block (8) away from the sliding hole (22), and a handle (25) is fixedly connected to the front end of the screw rod (23).

8. The wheel hub manufacturing friction stir welding device according to claim 1, characterized in that: A support rod (26) is fixedly connected to the top of the support platform (1), and there are two support rods (26). The two support rods (26) are located on both sides of the electric push rod (6), and the inner wall of the first support block (7) is provided with an opening corresponding to the support rod (26).

9. The wheel hub manufacturing friction stir welding device according to claim 1, characterized in that: A second protective cover (27) is fixedly connected to the top of the first support block (7), and the second drive motor (9) is fixedly mounted inside the second protective cover (27).

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