A spinning machine for hub production

Abstract

This invention discloses a spinning machine for wheel hub production, relating to the field of wheel hub manufacturing technology. It includes a machine housing, a rotating assembly mounted on the bottom inner wall of the housing, a base connected to the top outer wall of the rotating assembly, and a rotating rod inserted into the center of the top outer wall of the base. The machine also includes: a locking mechanism located on the base and the rotating rod; a spinning mechanism located on both inner walls of the machine housing, used for applying pressure to the wheel hub; a pressing mechanism located on the top inner wall of the machine housing, used for fixing the wheel hub during processing; and an adjusting mechanism where a first mounting block and a second mounting block are connected to the outer circumference of the rotating rod via bearings, and a fixing block is fixedly connected to the outer circumference of the rotating rod. The spinning machine for wheel hub production provided by this invention offers high flexibility, wide adaptability, and the ability to meet the production needs of wheel hubs of different specifications and models.

Description

Technical Field

[0001] This invention relates to the field of wheel hub manufacturing technology, and in particular to a spinning machine for wheel hub manufacturing. Background Technology

[0002] A wheel hub is the rotating part of a tire, connected to the inner rim of the tire by a column. It is the metal component that supports the center of the tire and is mounted on the axle. It is also called a wheel rim, steel rim, wheel, or tire rim. Wheel hubs come in many varieties depending on their diameter, width, forming method, and material. Common automotive wheel hubs include steel wheel hubs and aluminum alloy wheel hubs. Steel wheel hubs have high strength and are often used in large heavy-duty trucks, but they are heavy and have a limited range of shapes. An automotive wheel hub spinning machine is a piece of equipment used for spinning and forming automotive wheel hubs. It mainly consists of a machine body, an upper die base, a lower die base, a rotary table, spinning rollers, and other components.

[0003] Patent application number 202222074956.9 discloses a hub spinning machine, including a frame, a main shaft motor, a liquefied gas tank, a spray gun, an arc-shaped baffle, a column, a top beam, a hydraulic cylinder, a movable crossbeam, a sliding sleeve, a sliding rod, a bearing, a connecting shaft, an upper die pressing block, a base, a lower die, a longitudinal hydraulic rod, a transverse hydraulic rod, and a cutter holder. The cutter holder has a motor on one side of its top, a hob at the bottom of the motor, and an arc-shaped notch at the bottom. The inner side of the arc-shaped notch has a nozzle and a guide wheel.

[0004] However, the traditional spinning die set for wheel hub production has a limited scope of application, mainly used for some specific wheel hub specifications and models, and cannot meet the production needs of wheel hubs of different specifications and models. The diameter of mainstream automobile wheel hub steel rims is generally 15-19 inches, and the die set suitable for 15-inch wheel hubs is difficult to use for larger wheel hub operations. Therefore, factories that want to produce more models of wheel hubs need a larger space and purchase more models of equipment. Summary of the Invention

[0005] This invention discloses a spinning machine for wheel hub production, which aims to solve the technical problem that the application range of the spinning machine mold base for wheel hub production is small, mainly used for some specific wheel hub specifications and models, and cannot meet the production needs of wheel hubs of different specifications and models.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A spinning machine for producing wheel hubs includes a machine housing, a rotating assembly mounted on the bottom inner wall of the machine housing, a base connected to the top outer wall of the rotating assembly, and a rotating rod inserted into the center of the top outer wall of the base. The machine also includes:

[0008] Locking mechanism: The locking mechanism is disposed on the base and the rotating rod;

[0009] Spinning mechanism: The spinning mechanism is located on the inner walls of both sides of the chassis, and the spinning mechanism is used to apply pressure to the wheel hub for processing;

[0010] Pressing mechanism: The pressing mechanism is located on the top inner wall of the chassis, and the pressing mechanism is used for machining and fixing the wheel hub;

[0011] Adjustment mechanism: The outer circumference of the rotating rod is connected to a first mounting block and a second mounting block via bearings. A fixed block is fixedly connected to the outer circumference of the rotating rod. The top outer wall of the first mounting block and the bottom outer wall of the second mounting block each have seven telescopic grooves. Movable blocks are inserted into the inside of each telescopic groove. One end of the top movable block and the bottom movable block are connected to the same connecting block. A combination module is installed on one side outer wall of each of the seven connecting blocks. The top outer wall of the fixed block has seven arc-shaped grooves. Movable connecting rods are provided inside the arc-shaped grooves. A top plate is connected to the top outer wall of the second mounting block.

[0012] Positioning mechanism: The positioning mechanism is installed on the top outer wall of the top plate.

[0013] In this solution, seven combined modules form a mold base. By rotating the combined modules, the movable connecting rod moves inside the arc-shaped groove, which in turn drives the movable blocks on the first and second mounting blocks to extend and retract synchronously inside the telescopic groove. This achieves the effect of the combined modules shrinking inward and expanding outward, thereby expanding and shrinking the diameter of the mold base. In production activities, to meet the production needs of different sized wheel hubs, the size of the mold base can be changed by rotating and changing the position of the combined modules. One mold base can meet the production needs of mainstream wheel hub sizes, making the equipment more flexible and applicable to a wider range of applications, ultimately reducing production purchase costs and site costs.

[0014] In a preferred embodiment, the locking mechanism includes a circular support block installed on the outer wall of the top of the top plate. The circular support block has a telescopic rod inside, and a stop block is connected to the top of the telescopic rod. A first return spring and a sleeve block are sleeved on the outer wall of the piston rod of the telescopic rod. Three first folding frames are provided at equal intervals on the outer wall of the sleeve block. Three second folding frames corresponding to the positions of the first folding frames are provided on the outer wall of the telescopic rod near the bottom end. Movable locking blocks are connected between the three first folding frames and the three second folding frames. A protrusion is installed at the center of the bottom outer wall of the pressure block. The top of the first return spring is connected to the bottom outer wall of the sleeve block.

[0015] During the spinning process of wheel hubs, stability must be ensured. Different wheel hub models have different dimensions, and the fixing position and size during spinning vary. If the same fixing method is maintained for different wheel hub models, the wheel hub may become unstable, causing it to shift during spinning and affecting the quality of wheel hub processing. Therefore, a protrusion is set at the bottom of the pressure block, and a circular support block, telescopic rod, first folding frame, second folding frame, and movable locking block are set at the top of the top plate. After the wheel hub is placed, the hole in the middle of the wheel hub passes through the circular support block. When the pressing mechanism presses down to fix the wheel hub, the protrusion squeezes the stop block, thereby driving the sleeve block to move down. Then, the first and second folding frames push out the movable locking block and tightly lock the inner wall of the wheel hub hole, ensuring that the wheel hub will not easily shift. Finally, the pressure block fixes the entire wheel hub. This ensures the stability of the wheel hub when dealing with multiple wheel hub models, thereby ensuring improved wheel hub processing quality.

[0016] In a preferred embodiment, the movable block is configured as an arc-shaped structure, the protrusion is configured as a cone-shaped structure with the top facing downwards, the outer diameter of the stop block is the same as the inner diameter of the circular support block, and the positions of the protrusion and the stop block correspond to each other.

[0017] The movable locking block is designed with an arc-shaped structure and tilted on both sides. Therefore, it is restricted by the circular support block. When the first and second folding frames are folded under force, it prevents them from folding inward. At the same time, the arc shape can better overlap the inner wall of the middle hole of the wheel hub, improving the fixing effect. The protrusion is designed with a cone shape. As the size of the hole changes with the wheel hub model, the protrusion can pass through the hole to varying degrees and press against the top of the wheel hub for limiting. Compared with a column with the same size at the top and bottom, it can maintain a certain limiting effect as the wheel hub model changes.

[0018] In a preferred embodiment, the locking mechanism includes a gear and a slotted block mounted on the bottom outer wall of the first mounting block. The bottom outer wall of the slotted block has a groove, and a slider is installed inside the groove. Equally spaced limiting blocks are mounted on the circumferential outer wall of the rotating rod near its bottom end. The top outer wall of the base has, from the inside out, an adapter hole, a limiting toothed band, and a circular groove. A second return spring is provided inside the circular groove. The gear is sleeved on the circumferential outer wall of the rotating rod. The top end of the second return spring is connected to the slider, and the bottom end of the second return spring is connected to the bottom inner wall of the circular groove.

[0019] Seven modular components form a mold base. The modular components change position by rotating, thereby changing the size of the mold base after assembly. During wheel hub spinning, the mold base needs to rotate at high speed. Under the action of centrifugal force, the movable block may extend outward, causing the modular components to move outward, which is an unstable factor and will affect the wheel hub processing. By using a second return spring to lift the first mounting block, the gear is disengaged from the limiting toothed belt, and the modular components can be adjusted. During processing, the pressing mechanism is used to press the gear into the limiting toothed belt, and the first mounting block and other components cannot rotate, thus preventing the modular components from moving outward and improving the stability of the wheel hub.

[0020] As described above, a spinning machine for wheel hub production includes a machine housing. A rotating assembly is installed on the bottom inner wall of the machine housing, and a base is connected to the top outer wall of the rotating assembly. A rotating rod is inserted into the center of the top outer wall of the base. The machine also includes: a locking mechanism: the locking mechanism is disposed on the base and the rotating rod; a spinning mechanism: the spinning mechanism is located on both sides of the inner wall of the machine housing, and the spinning mechanism is used to apply pressure to the wheel hub; a pressing mechanism: the pressing mechanism is located on the top inner wall of the machine housing, and the pressing mechanism is used for processing and fixing the wheel hub; and an adjusting mechanism: a first mounting block is connected to the circumferential outer wall of the rotating rod via a bearing. The first mounting block and the second mounting block are provided with a fixed block fixedly connected to the outer circumference of the rotating rod. The top outer wall of the first mounting block and the bottom outer wall of the second mounting block each have seven telescopic grooves. Movable blocks are inserted into the interior of each telescopic groove. One end of the top and bottom movable blocks is connected to the same connecting block. A combination module is installed on one side of each of the seven connecting blocks. The top outer wall of the fixed block has seven arc-shaped grooves, and movable connecting rods are provided inside the arc-shaped grooves. A top plate is connected to the top outer wall of the second mounting block. A locking mechanism is installed on the top outer wall of the top plate. The spinning machine for wheel hub production provided by this invention has the technical advantages of high flexibility, wide adaptability, and the ability to meet the production needs of wheel hubs of different specifications and models. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a spinning machine for wheel hub production proposed in this invention.

[0022] Figure 2 This is a schematic diagram of the combined module installation structure of a spinning machine for wheel hub production proposed in this invention.

[0023] Figure 3 This is a schematic diagram of the locking mechanism of a spinning machine for wheel hub production proposed in this invention.

[0024] Figure 4 This is a schematic diagram of the internal structure of the base of a spinning machine for wheel hub production proposed in this invention.

[0025] Figure 5 This is a schematic diagram of the movable block mounting structure of a spinning machine for wheel hub production proposed in this invention.

[0026] Figure 6 This is a schematic diagram of the fixing block structure of a spinning machine for wheel hub production proposed in this invention.

[0027] Figure 7 This is an enlarged structural schematic diagram of a spinning machine for wheel hub production proposed in this invention at point A.

[0028] Figure 8 This is a schematic diagram of the clamping mechanism of a spinning machine for wheel hub production proposed in this invention.

[0029] Figure 9 This is a schematic diagram of the protrusion structure of a spinning machine for wheel hub production proposed in this invention.

[0030] In the attached diagram: 1. Chassis; 2. Rotating assembly; 3. Moving assembly; 4. Hob; 5. Hydraulic assembly; 6. Base; 7. Second mounting block; 8. Combination module; 9. Connecting block; 10. Groove block; 11. Rotating rod; 12. Limiting block; 13. Slider; 14. Second return spring; 15. Telescopic groove; 16. Gear; 17. Circular groove; 18. Adaptor hole; 19. First mounting block; 20. Fixed block; 21. Movable block; 22. Limiting toothed belt; 23. Arc groove; 24. Movable connecting rod; 25. Circular support block; 26. Top plate; 27. Telescopic rod; 28. Stop block; 29. ​​Sleeve block; 30. First return spring; 31. First folding frame; 32. Movable locking block; 33. Second folding frame; 34. Pressure block; 35. Protrusion. Detailed Implementation

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and marked in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0032] The spinning machine for wheel hub production disclosed in this invention is mainly applicable to scenarios where the mold base of the traditional spinning machine for wheel hub production has a limited scope of application and is mainly used for some specific wheel hub specifications and models, which cannot meet the production needs of wheel hubs of different specifications and models.

[0033] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 A spinning machine for producing wheel hubs includes a housing 1, a rotating assembly 2 fixedly mounted on the bottom inner wall of the housing 1, a base 6 connected to the top outer wall of the rotating assembly 2, and a rotating rod 11 inserted into the center of the top outer wall of the base 6. The machine also includes:

[0034] Locking mechanism: The locking mechanism is located on the base 6 and the rotating rod 11;

[0035] Spinning mechanism: The spinning mechanism is located on the inner walls of both sides of the housing 1. The spinning mechanism is used to apply pressure to the wheel hub for processing.

[0036] Pressing mechanism: The pressing mechanism is located on the top inner wall of the chassis 1. The pressing mechanism is used for machining and fixing the wheel hub;

[0037] Adjustment mechanism: The outer circumference of the rotating rod 11 is movably connected to the first mounting block 19 and the second mounting block 7 via bearings. The outer circumference of the rotating rod 11 is fixedly connected to the fixing block 20. The top outer wall of the first mounting block 19 and the bottom outer wall of the second mounting block 7 are each provided with seven telescopic grooves 15. Movable blocks 21 are inserted into the inside of each telescopic groove 15. One end of the movable block 21 at the top and the movable block 21 at the bottom are fixedly connected to the same connecting block 9. A combination module 8 is fixedly installed on one side of the outer wall of each of the seven connecting blocks 9. The top outer wall of the fixing block 20 is provided with seven arc-shaped grooves 23. Movable connecting rods 24 are provided inside the arc-shaped grooves 23. The top outer wall of the second mounting block 7 is fixedly connected to the top plate 26.

[0038] Positioning mechanism: The positioning mechanism is installed on the top outer wall of the top plate 26;

[0039] The first mounting block 19 and the second mounting block 7 are symmetrically located at the top and bottom of the fixed block 20, and the top and bottom ends of the movable link 24 are respectively connected to the bottom outer wall of the movable block 21 located at the top and the top outer wall of the movable block 21 located at the bottom.

[0040] In practical use, the seven combined modules 8 form a mold base. By rotating the combined modules 8, the movable connecting rod 24 moves inside the arc groove 23. As the position of the movable connecting rod 24 away from the center of the fixed block 20 changes, the movable blocks 21 on the first mounting block 19 and the second mounting block 7 synchronously extend and retract inside the telescopic groove 15. The movable blocks 21 push the combined modules 8 to change their positions synchronously. After the change, the combined modules 8 form a new mold base.

[0041] Reference Figure 1In a preferred embodiment, the spinning mechanism includes a movable component 3 movably connected to the inner walls of both sides of the housing 1, and a roller cutter 4 movably connected to the bottom outer wall of the movable component 3. The pressing mechanism includes a hydraulic component 5 disposed on the top inner wall of the housing 1, and a pressure block 34 fixedly connected to the bottom outer wall of the hydraulic component 5. Both the roller cutter 4 and the pressure block 34 correspond to the positions of the combined module 8.

[0042] Specifically, in use, the wheel hub is placed on the combination module 8, and then the hydraulic component 5 drives the pressure block 34 to press down and fix the wheel hub. Then, the position of the hob 4 is adjusted by the moving component 3, and finally the rotating component 2 drives the wheel hub to rotate, so that the hob 4 can process the wheel hub.

[0043] Reference Figure 1 , Figure 7 , Figure 8 and Figure 9 In a preferred embodiment, the locking mechanism includes a circular support block 25 fixedly installed on the top outer wall of the top plate 26. The circular support block 25 has a telescopic rod 27 inside. The top end of the telescopic rod 27 is fixedly connected to a stop block 28. The outer wall of the piston rod of the telescopic rod 27 is sleeved with a first return spring 30 and a sleeve block 29. The outer wall of the sleeve block 29 is provided with three first folding frames 31 at equal intervals. The outer wall of the telescopic rod 27 near the bottom end is provided with three second folding frames 33 corresponding to the positions of the first folding frames 31. Movable locking blocks 32 are movably connected between the three first folding frames 31 and the three second folding frames 33. A protrusion 35 is fixedly installed at the center of the bottom outer wall of the pressure block 34. The top end of the first return spring 30 is fixedly connected to the bottom outer wall of the sleeve block 29.

[0044] The movable latch 32 is designed with an arc shape and tilted on both sides. Therefore, it is restricted by the circular support block 25. When the first folding frame 31 and the second folding frame 33 are folded under force, it prevents them from folding inward. At the same time, the arc shape can better overlap the inner wall of the middle hole of the wheel hub, improving the fixing effect. The protrusion 35 is designed with a cone shape with the top facing down. As the size of the hole changes with the wheel hub model, the protrusion 35 can pass through the hole to different degrees and press against the top of the wheel hub for limiting. Compared with a column with the same size at the top and bottom, it can maintain a certain limiting effect as the wheel hub model changes.

[0045] Furthermore, the outer diameter of the stop block 28 is the same as the inner diameter of the circular support block 25, and the protrusion 35 corresponds to the position of the stop block 28. The protrusion 35 presses against the baffle, and the stop block 28 can be inserted into the circular support block 25, thereby obtaining a larger adjustment range for the movable locking block 32.

[0046] Specifically, the hydraulic component 5 drives the pressure block 34 to press down, and the protrusion 35 at the center of the pressure block 34 presses against the stop block 28, causing the telescopic rod 27 to retract. The sleeve block 29 moves down accordingly, causing the first folding frame 31 and the second folding frame 33 to fold. This causes the movable locking block 32 to extend outward, finally locking the hole at the center of the wheel hub, limiting the wheel hub and ensuring that the wheel hub will not easily shift. Finally, the pressure block 34 fixes the entire wheel hub in place. This ensures the stability of the wheel hub when dealing with various wheel hub models, thereby ensuring improved wheel hub processing quality.

[0047] Reference Figure 2 , Figure 3 and Figure 4 In a preferred embodiment, the locking mechanism includes a gear 16 and a slot 10 fixedly mounted on the bottom outer wall of the first mounting block 19. The bottom outer wall of the slot 10 has a sliding groove, and a slider 13 is movably connected inside the sliding groove. Limiting blocks 12 are fixedly mounted on the circumferential outer wall of the rotating rod 11 near the bottom end. The top outer wall of the base 6 has an adapter hole 18, a limiting toothed belt 22, and a circular groove 17 sequentially opened from the inside to the outside. A second return spring 14 is provided inside the circular groove 17. The gear 16 and the limiting toothed belt 22 are corresponding in position and size. The slot 10 and the circular groove 17 are corresponding in position. The gear 16 is sleeved on the circumferential outer wall of the rotating rod 11. The top end of the second return spring 14 is connected to the slider 13, and the bottom end of the second return spring 14 is connected to the bottom inner wall of the circular groove 17.

[0048] The width of the circular groove 17 is greater than the width of the groove block 10, so that the groove block 10 is submerged inside the circular groove 17.

[0049] Specifically, when not in use, the first mounting block 19 is slightly lifted by the second return spring 14, and the gear 16 is disengaged from the limiting toothed belt 22. At this time, the position of the combination module 8 can be adjusted by rotating the combination module 8. During processing, the hydraulic component 5 drives the pressure block 34 to press down, and the gear 16 is submerged in the limiting toothed belt 22. At this time, the first mounting block 19 cannot be rotated, which can prevent the combination module 8 from moving outward under the action of centrifugal force during processing and improve the stability of the wheel hub.

[0050] Working principle: In use, the seven combined modules 8 form a mold base on which the wheel hub is placed. The hydraulic component 5 drives the pressure block 34 to press down. The protrusion 35 in the center of the pressure block 34 presses against the stop block 28, causing the telescopic rod 27 to retract. The sleeve block 29 moves down accordingly, causing the first folding frame 31 and the second folding frame 33 to fold. This causes the movable locking block 32 to extend outward, finally locking the hole in the center of the wheel hub and limiting the wheel hub. At the same time, the gear 16 is inserted into the limiting toothed belt 22. At this time, the first mounting block 19 and others cannot rotate. Then, the position of the hob 4 is adjusted by the moving component 3, and the wheel hub is rotated. Component 2 drives the hub to rotate, and the hob 4 can process the hub. When not in use, the first mounting block 19 is slightly lifted by the second return spring 14, and the gear 16 disengages from the limiting toothed belt 22. At this time, the movable connecting rod 24 can be moved inside the arc groove 23 by rotating the combination module 8. As the position of the movable connecting rod 24 away from the center of the fixed block 20 changes, the movable blocks 21 on the first mounting block 19 and the second mounting block 7 can be synchronously extended and retracted inside the telescopic groove 15. The movable blocks 21 push the combination module 8 to change position synchronously. After the change, the combination module 8 forms a new mold base.

[0051] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made to the technical solutions and inventive concepts of the present invention should all be covered within the scope of protection of the present invention.

Claims

1. A spinning machine for producing wheel hubs, comprising a housing (1), wherein a rotating assembly (2) is mounted on the bottom inner wall of the housing (1), a base (6) is connected to the top outer wall of the rotating assembly (2), and a rotating rod (11) is inserted into the center of the top outer wall of the base (6), characterized in that, Also includes: Spinning mechanism: The spinning mechanism is located on the inner walls of both sides of the housing (1). The spinning mechanism is used to apply pressure to the wheel hub. The spinning mechanism includes a movable component (3) installed on the inner walls of both sides of the housing (1). A hob (4) is connected to the bottom outer wall of the movable component (3). Adjustment mechanism: The outer circumference of the rotating rod (11) is connected to a first mounting block (19) and a second mounting block (7) via bearings. A fixing block (20) is fixedly connected to the outer circumference of the rotating rod (11). Seven telescopic grooves (15) are opened on the top outer wall of the first mounting block (19) and the bottom outer wall of the second mounting block (7). Movable blocks (21) are inserted into the inside of each telescopic groove (15). One end of the movable block (21) located at the top and the movable block (21) located at the bottom are connected. There is a common connecting block (9), and a combination module (8) is installed on one side of the outer wall of each of the seven connecting blocks (9). The top outer wall of the fixed block (20) has seven arc-shaped grooves (23). The inside of the arc-shaped grooves (23) is provided with movable connecting rods (24). The top and bottom ends of the movable connecting rods (24) are respectively connected to the bottom outer wall of the movable block (21) located at the top and the top outer wall of the movable block (21) located at the bottom. The top outer wall of the second mounting block (7) is connected to a top plate (26). Locking mechanism: The locking mechanism is disposed on the base (6) and the rotating rod (11). The locking mechanism includes a gear (16) and a groove block (10) installed on the bottom outer wall of the first mounting block (19). The bottom outer wall of the groove block (10) has a sliding groove, and a slider (13) is installed inside the sliding groove. The rotating rod (11) has equidistantly distributed limiting blocks (12) installed on the circumferential outer wall near the bottom end. The top outer wall of the base (6) has matching holes adapted to the rotating rod (11) from the inside to the outside. 18) Limiting toothed belt (22) and circular groove (17), the gear (16) corresponds to the position and size of the limiting toothed belt (22), the groove block (10) corresponds to the position of the circular groove (17), and the width of the circular groove (17) is greater than the width of the groove block (10). The inside of the circular groove (17) is provided with a second return spring (14), the top end of the second return spring (14) is connected to the slider (13), and the bottom end of the second return spring (14) is connected to the bottom inner wall of the circular groove (17). Pressing mechanism: The pressing mechanism is located on the top inner wall of the chassis (1). The pressing mechanism is used for the processing and fixing of the wheel hub. The pressing mechanism includes a hydraulic component (5) set on the top inner wall of the chassis (1). A pressure block (34) is connected to the bottom outer wall of the hydraulic component (5). The hob (4) and the pressure block (34) are both corresponding to the position of the combined module (8). Positioning mechanism: The positioning mechanism is installed on the top outer wall of the top plate (26). The positioning mechanism includes a circular support block (25) installed on the top outer wall of the top plate (26). The circular support block (25) is provided with a telescopic rod (27) inside. The top end of the telescopic rod (27) is connected to a stop block (28). The outer wall of the piston rod of the telescopic rod (27) is sleeved with a first return spring (30) and a sleeve block (29). The outer wall of the sleeve block (29) is provided with three first folding frames (31) at equal intervals. The telescopic rod (27) Near the bottom, the outer wall is provided with three second folding frames (33) corresponding to the positions of the first folding frame (31). Movable blocks (32) are connected between the three first folding frames (31) and the three second folding frames (33). A protrusion (35) is installed at the center of the bottom outer wall of the pressure block (34). The seven combined modules (8) form a mold base and place the wheel hub on the mold base. The hydraulic component (5) drives the pressure block (34) to press down. The protrusion (35) at the center of the pressure block (34) squeezes the stop block (28), so that the telescopic mechanism can extend. The rod (27) retracts, and the sleeve (29) moves down, causing the first folding frame (31) and the second folding frame (33) to fold. This causes the movable locking block (32) to extend outward, eventually locking the hole in the center of the hub and limiting the hub. At the same time, the gear (16) is inserted into the limiting toothed belt (22) to prevent the combined module (8) from moving outward under the centrifugal force during processing. Then, the position of the hob (4) is adjusted by the moving component (3), and the rotating component (2) drives the hub to rotate. The hob (4) can then process the hub. At this time, due to the action of the second reset spring (14), the gear (16) disengages from the limiting toothed belt (22). At this time, the movable link (24) can be moved inside the arc groove (23) by rotating the combination module (8). As the position of the movable link (24) away from the center of the fixed block (20) changes, the movable block (21) on the first mounting block (19) and the second mounting block (7) can be synchronously extended and retracted inside the telescopic groove (15). The movable block (21) pushes the combination module (8) to change its position synchronously. After the change, the combination module (8) forms a new mold base.

2. The spinning machine for wheel hub production according to claim 1, characterized in that, The first mounting block (19) and the second mounting block (7) are symmetrically located at the bottom and top of the fixing block (20).

3. The spinning machine for wheel hub production according to claim 1, characterized in that, The active card block (32) is configured as an arc-shaped structure, and the protrusion (35) is configured as a cone-shaped structure with the top facing down.

4. A spinning machine for producing wheel hubs according to claim 3, characterized in that, The top end of the first reset spring (30) is connected to the bottom outer wall of the sleeve (29).

5. A spinning machine for producing wheel hubs according to claim 1, characterized in that, The outer diameter of the stop (28) is the same as the inner diameter of the circular support block (25), and the position of the protrusion (35) corresponds to that of the stop (28).

6. A spinning machine for wheel hub production according to claim 5, characterized in that, The gear (16) is sleeved on the outer circumferential wall of the rotating rod (11).

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