Inner ring positioning device for hub bearing machining

Abstract

The utility model discloses a hub bearing processing inner ring positioning device, which comprises a device cylinder frame, a positioning disc, an electric telescopic cylinder and clamping jaw tables, one end of the device cylinder frame is fixedly connected with the positioning disc, the positioning disc is slidably connected with a plurality of groups of motion tables in an annular array, each group of motion tables is fixedly connected with the clamping jaw tables, and the clamping jaw tables are fixedly connected with the electric telescopic cylinder. A clamping groove A is formed in one face of the clamping jaw table, a clamping groove B is formed in the other face of the clamping jaw table, the clamping groove A is matched with the inner wall outline of the bearing inner ring, and the clamping groove B is matched with the outer wall outline of the bearing inner ring. One end of each traction arm is rotationally connected to the corresponding movement table, an electric telescopic cylinder is fixedly connected into the device barrel frame, and the piston end of the electric telescopic cylinder is fixedly connected with the traction table. The utility model relates to the technical field of hub bearing machining equipment, and has the characteristics that the clamping is accurate, the machining efficiency can be improved, and the use flexibility is good.

Description

Technical Field

[0001] This utility model relates to the technical field of wheel hub bearing processing equipment, specifically a wheel hub bearing inner ring positioning device. Background Technology

[0002] Wheel hub bearings are the core components of automotive transmission systems. Their machining accuracy directly affects the bearing's load-bearing capacity, rotational accuracy, and service life. In the manufacturing process of wheel hub bearings, the machining of the bearing inner ring is particularly critical, usually involving multiple processes such as inner hole, outer circle, and end face. The precise positioning and stable clamping of the inner ring are the foundation for ensuring machining accuracy.

[0003] In existing technologies, the bearing inner ring is fixed by radial expansion from the inner hole of the bearing inner ring using a clamp. However, the contact area between the clamping claws and the inner hole wall of traditional internal support clamps is limited, and the clamping force is unevenly distributed, which can easily lead to deformation of the inner ring or insecure clamping. This is especially prone to loosening during high-speed cutting, affecting machining accuracy. Alternatively, the bearing inner ring can be clamped from the outside using a clamp. Although this method can provide a larger clamping force, since the outer wall of the bearing inner ring is usually arc-shaped or has grooves, ordinary flat claws cannot fit tightly, resulting in mismatch of clamping contact surfaces. This can easily cause local stress concentration and even damage to the workpiece surface. Utility Model Content

[0004] In view of the above-mentioned shortcomings in the existing technology, the purpose of this utility model is to provide a positioning device that can provide precise clamping, improve processing efficiency, and has good flexibility of use.

[0005] The technical solution adopted by this utility model to achieve the above-mentioned objective is as follows: a positioning device for inner ring machining of wheel hub bearings, comprising a device frame, a positioning disk, an electric telescopic cylinder, and a clamping claw platform. The positioning disk is fixedly connected to one end of the device frame. Multiple sets of motion platforms are slidably connected in a circular array on the positioning disk. Each set of motion platforms is fixedly connected to the clamping claw platform. One side of the clamping claw platform is provided with a clamping groove A, and the other side is provided with a clamping groove B. The clamping groove A matches the inner wall contour of the bearing inner ring, and the clamping groove B matches the outer wall contour of the bearing inner ring. A traction platform is slidably connected inside the device frame. A traction arm is rotatably connected to each set of motion platforms on the traction platform. One end of the traction arm is rotatably connected to the corresponding motion platform. The electric telescopic cylinder is fixedly connected inside the device frame, and the piston end of the electric telescopic cylinder is fixedly connected to the traction platform.

[0006] In the above technical solution, the positioning disk is provided with multiple sets of sliding slots in a circular array, and the motion table is slidably connected in each set of sliding slots.

[0007] In the above technical solution, multiple sets of sliding columns are fixedly connected inside the device frame, and the traction table is slidably connected to the sliding columns.

[0008] In the above technical solution, a rotating platform A is fixedly connected to one side of the motion platform near the device frame, a rotating platform B is fixedly connected to the traction platform corresponding to the rotating platform A, and rotating shafts are fixedly connected to both ends of the traction arm. One set of rotating shafts is rotatably connected to the rotating platform A, and the other set of rotating shafts is rotatably connected to the rotating platform B.

[0009] In the above technical solution, the motion table is provided with a plug groove on the side away from the device frame, and a screw hole is provided on the side of the motion table located at the plug groove. A plug block is fixedly connected to the clamping claw table. Each set of screw holes on the clamping claw table is provided with an installation hole. The plug block is fitted into the plug groove. The installation hole corresponds one-to-one with the screw hole. A bolt is provided in the installation hole, and the bolt is threaded into the screw hole.

[0010] In the above technical solution, rubber pads are fixedly connected to the inner walls of both clamping groove A and clamping groove B.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. The electric telescopic cylinder drives the traction table to move linearly. Then, under the action of the traction arm, multiple sets of moving tables, together with the clamping jaws, can move radially linearly synchronously. This allows the clamping jaws to fix the inner ring of the bearing, providing excellent automatic centering and preventing the inner ring from misaligning. When machining the inner ring, the clamping jaws are located inside the inner hole of the bearing. The electric telescopic cylinder drives multiple sets of clamping jaws to move away from each other, so that the clamping grooves A of the multiple sets of clamping jaws provide internal support and fixation to the inner wall of the bearing inner ring. This allows machining of the outer wall of the bearing inner ring. When machining the inner ring, the clamping jaws are located outside the bearing inner ring. The electric telescopic cylinder drives multiple sets of clamping jaws to move closer together, so that the clamping grooves B of the multiple sets of clamping jaws can clamp and fix the inner ring. This allows machining of the inner wall of the bearing inner ring without changing the fixture, significantly improving machining efficiency.

[0013] 2. The clamping jaw stage is equipped with a clamping groove A that matches the inner wall of the bearing inner ring and a clamping groove B that matches the outer wall of the bearing inner ring. This increases the contact area when the clamping jaw stage fixes the bearing inner ring, thereby improving the fixing effect and ensuring the stability of the bearing inner ring during processing. Furthermore, the clamping groove A and clamping groove B are matched with the contour of the bearing inner ring, which can further improve the clamping accuracy.

[0014] 3. The clamping jaws and the moving table are fixedly connected by bolts, which allows for quick replacement of clamping jaws of different specifications (such as to accommodate different bearing sizes), making it more flexible to use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a structural schematic diagram of another state of the present invention;

[0017] Figure 3 This is a schematic diagram of the internal structure of the device frame in this utility model;

[0018] Figure 4 This is an exploded view of the motion platform and clamping claw platform in this utility model.

[0019] In the diagram: 100 Device frame, 200 Positioning plate, 201 Sliding through groove, 300 Electric telescopic cylinder, 400 Clamping claw platform, 401 Clamping groove A, 402 Clamping groove B, 403 Insertion block, 404 Mounting hole, 500 Moving table, 501 Rotating table A, 502 Insertion groove, 503 Screw hole, 600 Sliding column, 700 Traction table, 701 Rotating table B, 800 Traction arm, 900 Bolt. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] Please see Figure 1-4 A positioning device for inner ring machining of wheel hub bearings includes a device frame 100, a positioning disk 200, an electric telescopic cylinder 300, and a clamping claw stage 400. First, the positioning disk 200 is fixedly connected to one end of the device frame 100. The positioning disk 200 is provided with multiple sets of sliding through grooves 201 arranged in a ring. Each set of sliding through grooves 201 is slidably connected to a moving table 500. Each set of moving tables 500 is fixedly connected to a set of clamping claw stages 400. The clamping claw stage 400 is provided with a clamping groove A401 on one side facing inward and a clamping groove B402 on the other side. The clamping groove A401 matches the inner wall contour of the bearing inner ring, while the clamping groove B402 matches the outer wall contour of the bearing inner ring.

[0022] Furthermore, multiple sets of sliding columns 600 are fixedly connected inside the device frame 100. A traction platform 700 is slidably connected to the sliding column 600. A traction arm 800 is rotatably connected to each set of motion platform 500 on the traction platform 700. One end of the traction arm 800 is rotatably connected to the corresponding motion platform 500. Specifically, a rotating platform A501 is fixedly connected to the side of the motion platform 500 closest to the device frame 100. A rotating platform B701 is fixedly connected to the traction platform 700 corresponding to the rotating platform A501. Rotating shafts are fixedly connected to both ends of the traction arm 800. One set of rotating shafts is rotatably connected to the rotating platform A501, and the other set of rotating shafts is rotatably connected to the rotating platform B701.

[0023] In addition, an electric telescopic cylinder 300 is fixedly connected inside the device frame 100. The piston end of the electric telescopic cylinder 300 is fixedly connected to the traction table 700. The electric telescopic cylinder 300 can be replaced by a hydraulic telescopic cylinder or any component that can provide axial movement force to the traction table 700. When it is necessary to fix the inner ring of the bearing, the electric telescopic cylinder 300 can drive the traction table 700 to move linearly. Then, under the action of the traction arm 800, multiple sets of moving tables 500 together with the clamping claw table 400 can move radially linearly in sync, thereby fixing the inner ring of the bearing through the clamping claw table 400. This automatic centering effect is excellent and avoids the inner ring of the bearing from being misaligned.

[0024] When the outer wall of the bearing inner ring needs to be machined, the clamping claw stage 400 is located in the inner hole of the bearing inner ring. The electric telescopic cylinder 300 drives multiple sets of clamping claw stages 400 to move away from each other, so that the clamping grooves A401 of the multiple sets of clamping claw stages 400 support the inner wall of the bearing inner ring, thereby achieving fixation.

[0025] When the inner wall of the bearing inner ring needs to be machined, the clamping claw stage 400 is located outside the bearing inner ring. The electric telescopic cylinder 300 drives the multiple sets of clamping claw stages 400 to move closer to each other, so that the clamping grooves B402 of the multiple sets of clamping claw stages 400 can clamp and fix the bearing inner ring.

[0026] With the above structure, when machining the outer and inner walls of the bearing inner ring, there is no need to change the fixture, which significantly improves the machining efficiency. Furthermore, rubber pads are fixedly connected to the inner walls of the clamping groove A401 and the clamping groove B402. The rubber pads increase the friction force to improve the clamping stability and also prevent wear between the clamping claw stage 400 and the bearing inner ring.

[0027] In a further optimized configuration, the motion table 500 has a slot 502 on the side away from the device frame 100, and a screw hole 503 is provided on the side of the motion table 500 located in the slot 502. A plug block 403 is fixedly connected to the clamping claw table 400. Each set of screw holes 503 on the clamping claw table 400 has a mounting hole 404. The plug block 403 is fitted into the slot 502. The mounting hole 404 corresponds one-to-one with the screw hole 503. A bolt 900 is provided in the mounting hole 404 and threaded into the screw hole 503. This allows the clamping claw table 400 to be quickly replaced with different specifications (such as to adapt to different bearing sizes), making it more flexible to use. The cooperation between the plug block 403 and the slot 502 can achieve pre-fixation between the motion table 500 and the clamping claw table 400, which facilitates the subsequent installation of the bolt 900.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A positioning device for machining the inner ring of a wheel hub bearing, comprising a device frame (100), a positioning disc (200), an electric telescopic cylinder (300), and a clamping jaw table (400), characterized in that: One end of the device frame (100) is fixedly connected to the positioning disk (200). Multiple sets of motion tables (500) are slidably connected in a circular array on the positioning disk (200). Each set of motion tables (500) is fixedly connected to a clamping jaw platform (400). One side of the clamping jaw platform (400) has a clamping groove A (401), and the other side has a clamping groove B (402). The clamping groove A (401) matches the inner wall contour of the bearing inner ring, and the clamping groove B (402) matches the bearing inner ring contour. The outer wall contour of the inner ring is matched. A traction table (700) is slidably connected inside the device frame (100). A traction arm (800) is rotatably connected to each set of motion tables (500) on the traction table (700). One end of the traction arm (800) is rotatably connected to the corresponding motion table (500). An electric telescopic cylinder (300) is fixedly connected inside the device frame (100). The piston end of the electric telescopic cylinder (300) is fixedly connected to the traction table (700).

2. The inner ring positioning device for wheel hub bearing machining according to claim 1, characterized in that: The positioning disk (200) is provided with multiple sets of sliding slots (201) arranged in a ring array, and the motion table (500) is slidably connected in each set of sliding slots (201).

3. The inner ring positioning device for wheel hub bearing machining according to claim 1, characterized in that: The device frame (100) has multiple sets of sliding columns (600) fixedly connected inside, and the traction table (700) is slidably connected to the sliding columns (600).

4. The inner ring positioning device for wheel hub bearing machining according to claim 1, characterized in that: A rotating platform A (501) is fixedly connected to the side of the motion platform (500) near the device frame (100). A rotating platform B (701) is fixedly connected to the traction platform (700) corresponding to the rotating platform A (501). Both ends of the traction arm (800) are fixedly connected to rotating shafts. One set of rotating shafts is rotatably connected to the rotating platform A (501), and the other set of rotating shafts is rotatably connected to the rotating platform B (701).

5. The inner ring positioning device for wheel hub bearing machining according to claim 1, characterized in that: The motion table (500) has a insertion groove (502) on the side away from the device frame (100). The motion table (500) has a screw hole (503) on the side of the insertion groove (502). The clamping claw table (400) is fixedly connected to the insertion block (403). The clamping claw table (400) has a mounting hole (404) for each set of screw holes (503). The insertion block (403) is fitted into the insertion groove (502). The mounting hole (404) corresponds one-to-one with the screw hole (503). The mounting hole (404) is provided with a bolt (900) and the bolt (900) is threaded into the screw hole (503).

6. The inner ring positioning device for wheel hub bearing machining according to claim 1, characterized in that: Rubber pads are fixedly connected to the inner walls of both clamping groove A (401) and clamping groove B (402).

Images