Fixing tool for machining hub and rim

Abstract

The fixing tool for machining the hub rim comprises an installation table, a plurality of backers are installed on one side of the installation table, an installation frame is further installed on the side, provided with the backers, of the installation table, a plurality of positioning blocks are connected to the side, away from the installation table, of the installation frame, and a positioning face is arranged on the outer side of the end, away from the installation frame, of each positioning block. A pull arm is arranged at the position, corresponding to the backer, of the mounting table, and a pressing block is mounted at the end, located on the side, provided with the backer, of the mounting table, of the pull arm. Positioning of the inner side of the rim is adopted, errors are reduced, and machining fluctuation of the wall thickness of the rim is small.

Description

Technical Field

[0001] The utility model relates to the technical field of processing tooling, and more specifically, to a fixing tooling for processing a wheel rim of a wheel hub. Background Art

[0002] When machining the wheel rim of a wheel hub, it is usually positioned at the drum part of the wheel hub. The calibration tolerance of the drum part is ±0.2 mm. When this is magnified to the wheel edge, it will cause the error to increase further, resulting in a large fluctuation in the wall thickness after the wheel rim is machined, which affects the quality of the product. Therefore, it is necessary to improve the existing fixing tooling and change the positioning method to reduce the machining error. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the above-mentioned deficiencies of the prior art and provide a fixing tooling for processing a wheel rim of a wheel hub.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The utility model discloses a fixing tooling for processing a wheel rim of a wheel hub, which includes an installation table. A plurality of backstops are installed on one side of the installation table. An installation frame is also installed on the side of the installation table where the backstops are installed. A plurality of positioning blocks are connected to the side of the installation frame away from the installation table. A positioning surface is provided on the outer side of the end of the positioning block away from the installation frame. A pull arm is arranged at a position corresponding to the backstop on the installation table. A pressing block is installed at the end of the pull arm on the side of the installation table where the backstops are installed.

[0006] Further, a notch is provided at the position on the installation table where the backstop is installed. A guiding column is installed in the notch. A guiding hole is provided on the pull arm. The pull arm is located in the notch, and the guiding column passes through the guiding hole.

[0007] Further, a moving plate is arranged on the side of the installation table away from the backstop. A rotating shaft is provided on the moving plate. The end of the pull arm away from the pressing block is rotatably arranged on the rotating shaft.

[0008] Further, the number of backstops is at least three.

[0009] Further, the plurality of backstops are evenly distributed on the installation table.

[0010] Further, a positioning sleeve is installed at the middle position of the installation table. A through hole is provided inside the positioning sleeve. The through hole is arranged along the axial direction of the positioning sleeve and penetrates through the positioning sleeve. A moving cylinder is installed in the through hole. The two ends of the moving cylinder extend beyond the two ends of the positioning sleeve. The installation frame is installed at the end of the moving cylinder. A blind hole is provided at the end of the moving cylinder away from the installation frame. A spring is installed in the blind hole, and the other end of the spring is connected to the moving plate.

[0011] Furthermore, one end of the moving cylinder close to the moving plate is connected to a limiting ring, and the diameter of the limiting ring is larger than the diameter of the through hole close to the moving plate.

[0012] Furthermore, a mounting groove is provided on one side of the positioning sleeve close to the mounting frame, an anti-collision pad is provided inside the mounting groove, and a boss is provided on one side of the mounting frame close to the positioning sleeve.

[0013] The utility model has the beneficial effect that the positioning surface on the positioning block can abut against the inner side of the rim, and the inner side of the rim is used for positioning, thereby reducing the fluctuation of the rim wall thickness during processing and ensuring that the rim wall thickness difference after processing is in a better state. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the structure of a fixed tooling for machining a wheel hub rim in this embodiment;

[0015] Figure 2 for Figure 1 A magnified schematic diagram of center A.

[0016] Figure numerals: 1. mounting table; 2. mounting frame; 3. positioning block; 4. positioning surface; 5. movable plate; 6. pulling arm; 7. pressing block; 8. rotating shaft; 9. guide column; 10. guide hole; 11. backrest; 12. positioning sleeve; 13. through hole; 14. movable cylinder; 15. boss; 16. mounting groove; 17. anti-collision pad; 18. limiting ring; 19. spring. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] like Figure 1As shown in the figure, a fixing tooling for machining a wheel rim includes an installation table 1. On one side of the installation table 1, several backstops 11 are installed. On the side of the installation table 1 where the backstops 11 are installed, an installation frame 2 is also installed. On the side of the installation frame 2 away from the installation table 1, several positioning blocks 3 are connected. On the outer side of one end of the positioning block 3 away from the installation frame 2, a positioning surface 4 is provided. At a position on the installation table 1 corresponding to the backstop 11, a pull arm 6 is provided. At the end of the pull arm 6 on the side of the installation table 1 where the backstop 11 is installed, a pressing block 7 is installed. The positioning block 3 and the backstop 11 are arranged in a staggered manner to prevent interference between the positioning block 3 and the backstop 11, and between the tooling and the product. The shape of the positioning surface 4 is set according to the inner side surface of the wheel rim to be machined, so that the positioning surface 4 can abut against the inner side surface of the wheel rim to form a positioning. The pull arm 6 moves to make the pressing block 7 approach the backstop 11, and the pressing block 7 and the backstop 11 clamp the wheel rim from both sides to fix it. Compared with the original positioning of the hub drum part, due to the tolerance of the drum part being enlarged to the wheel rim, wall thickness fluctuations occur during the machining of the wheel rim. By using the method of positioning on the inner side of the wheel rim, the influence of the eccentricity of the drum part caused by the calibration tolerance on the wheel rim is reduced, ensuring that the wall thickness difference of the wheel rim is in a better state.

[0019] At the position on the installation table 1 where the backstop 11 is installed, a notch is provided. Inside the notch, a guide post 9 is installed. On the pull arm 6, a guide hole 10 is provided. The pull arm 6 is located inside the notch, and the guide post 9 passes through the guide hole 10. The pull arm 6 moves through the cooperation of the guide hole 10 and the guide post 9, so that the pressing block 7 can approach or move away from the backstop 11, thereby cooperating with the backstop 11 to realize the clamping of the wheel rim.

[0020] On the side of the installation table 1 away from the backstop 11, a moving plate 5 is provided. On the moving plate 5, a rotating shaft 8 is provided. One end of the pull arm 6 away from the pressing block 7 is rotatably arranged on the rotating shaft 8. The moving plate 5 is connected to a driving mechanism to realize movement. Under the action of the driving mechanism, the moving plate 5 can approach or move away from the installation table 1. Then, the moving plate 5 drives the pull arm 6 to move.

[0021] The number of backstops 11 is at least three. The several backstops 11 are evenly distributed circumferentially on the installation table 1.

[0022] As Figure 2As shown in the figure, a positioning sleeve 12 is installed at the middle position of the installation table 1. A through hole 13 is provided inside the positioning sleeve 12. The through hole 13 is arranged along the axial direction of the positioning sleeve 12 and penetrates through the positioning sleeve 12. A moving cylinder 14 is installed in the through hole 13. Both ends of the moving cylinder 14 extend beyond both ends of the positioning sleeve 12. The mounting bracket 2 is installed at the end of the moving cylinder 14. A blind hole is provided at one end of the moving cylinder 14 away from the mounting bracket 2, and a spring 19 is installed in the blind hole. The other end of the spring 19 is connected to the moving plate 5. Under the action of the spring 19, in the initial state, the mounting bracket 2 is at a certain distance from the installation table 1, so that the end of the positioning block 3 extends beyond the end of the backstop 11, and the hub will first contact the positioning block 3. The positioning surface 4 on the positioning block 3 abuts against the inner side of the rim of the hub for positioning. Then the hub is moved towards the installation table 1, and the moving cylinder 14 squeezes the spring 19, enabling the moving cylinder 14 to move within the positioning sleeve 12, and the mounting bracket 2 moves towards the installation table 1, also enabling the rim to contact the backstop 11. Finally, the hub is fixed by the cooperation of the pressing block 7 and the backstop 11.

[0023] A limiting ring 18 is connected to one end of the moving cylinder 14 close to the moving plate 5. The diameter of the limiting ring 18 is larger than the diameter of one end of the through hole 13 close to the moving plate 5. The movement of the moving cylinder 14 is limited by the limiting ring 18 to prevent the moving cylinder 14 from disengaging from the limiting ring 18.

[0024] An installation groove 16 is provided on one side of the positioning sleeve 12 close to the mounting bracket 2. An anti-collision pad 17 is arranged inside the installation groove 16. A boss 15 is provided on one side of the mounting bracket 2 close to the positioning sleeve 12. When the mounting bracket 2 moves towards the installation table 1, the boss 15 contacts the anti-collision pad 17, and the anti-collision pad 17 is used to reduce the damage when the mounting bracket 2 collides with the positioning sleeve 12, protecting the mounting bracket 2 and the positioning sleeve 12.

[0025] The above is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and retouches should also be regarded as within the protection scope of the present invention.

Claims

1. A fixing tooling for machining a wheel rim of a wheel hub, characterized in that, It includes an installation table (1). On one side of the installation table (1), several backstops (11) are installed. On the side of the installation table (1) where the backstops (11) are installed, an installation frame (2) is also installed. On the side of the installation frame (2) away from the installation table (1), several positioning blocks (3) are connected. On the outer side of the end of the positioning block (3) away from the installation frame (2), a positioning surface (4) is provided. At a position on the installation table (1) corresponding to the backstop (11), a pulling arm (6) is provided. At the end of the pulling arm (6) on the side of the installation table (1) where the backstop (11) is installed, a pressing block (7) is installed.

2. The fixed tooling for machining the wheel rim of a wheel hub according to claim 1, wherein, At the position on the installation table (1) where the backstop (11) is installed, a notch is provided. Inside the notch, a guiding column (9) is installed. A guiding hole (10) is provided on the pulling arm (6). The pulling arm (6) is located inside the notch, and the guiding column (9) passes through the guiding hole (10).

3. The fixing tooling for machining a wheel rim according to claim 2, characterized in that, On the side of the installation table (1) away from the backstop (11), a moving plate (5) is provided. On the moving plate (5), a rotating shaft (8) is provided. The end of the pulling arm (6) away from the pressing block (7) is rotatably arranged on the rotating shaft (8).

4. The fixed tooling for machining a wheel rim according to claim 1, wherein, The number of the backstops (11) is at least three.

5. The fixed tooling for machining a wheel rim according to claim 4, characterized in that, The several backstops (11) are evenly distributed on the installation table (1).

6. The fixture for fixing the machining of the wheel rim according to claim 3, characterized in that, At the middle position of the installation table (1), a positioning sleeve (12) is installed. Inside the positioning sleeve (12), a through hole (13) is provided. The through hole (13) is arranged along the axial direction of the positioning sleeve (12), and the through hole (13) penetrates through the positioning sleeve (12). Inside the through hole (13), a moving cylinder (14) is installed. The two ends of the moving cylinder (14) extend beyond the two ends of the positioning sleeve (12). The installation frame (2) is installed at the end of the moving cylinder (14). At the end of the moving cylinder (14) away from the installation frame (2), a blind hole is provided. Inside the blind hole, a spring (19) is installed. The other end of the spring (19) is connected to the moving plate (5).

7. The fixing tooling for machining a wheel rim according to claim 6, wherein, At the end of the moving cylinder (14) close to the moving plate (5), a limiting ring (18) is connected. The diameter of the limiting ring (18) is larger than the diameter of the end of the through hole (13) close to the moving plate (5).

8. The fixed tooling for machining the wheel rim of a wheel hub according to claim 7, characterized in that, On the side of the positioning sleeve (12) close to the installation frame (2), an installation groove (16) is provided. Inside the installation groove (16), an anti-collision pad (17) is provided. On the side of the installation frame (2) close to the positioning sleeve (12), a boss (15) is provided.

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