Inner ring directional positioning structure for hub bearing machining

Abstract

The utility model discloses an inner ring directional positioning structure for hub bearing processing, which belongs to the technical field of hub bearing inner ring directional positioning, and comprises a processing table, the top of the processing table is fixedly connected with a hub bearing main body, the bottom of the processing table is fixedly connected with a positioning mechanism, and the hub bearing main body is fixedly connected with the positioning mechanism. The top of the machining table is fixedly connected with a limiting mechanism. The positioning mechanism comprises a hydraulic cylinder, a mounting rod, a mounting ring, a connecting rod, a limiting ring, an expansion ring and an inner cavity, through the synergistic effect of the hydraulic cylinder, the mounting rod, the connecting rod, the limiting ring, the expansion ring and other parts in the positioning mechanism, when the hydraulic cylinder pushes the mounting rod to ascend, the mounting ring drives the connecting rod to ascend, then the limiting ring ascends, and the expansion ring expands; and compared with a traditional disc positioning mode, the hub bearing body can be taken down more conveniently, only the hydraulic cylinder needs to be controlled to descend, and operation is easy and rapid.

Description

Technical Field

[0001] This utility model relates to the field of inner ring orientation and positioning technology for wheel hub bearings, and particularly to an inner ring orientation and positioning structure for wheel hub bearing processing. Background Technology

[0002] The inner ring orientation and positioning structure used for wheel hub bearing machining is a device that ensures that the inner ring of the wheel hub bearing is in a precise position and orientation during machining. Its function is to ensure machining accuracy, improve production efficiency and product quality, and reduce machining costs. Usually, the wheel hub bearing needs to be limited in various ways before machining operations can be carried out.

[0003] Currently, the end face runout of third-generation automotive wheel hub bearing units is generally required to be 0.050mm, with some requiring as much as 0.035mm. Under normal process conditions, the runout can be well controlled within this range with existing technology. However, some customers have higher precision requirements for the end face runout of third-generation wheel hub bearing units, that is, to control the end face runout value within the range of 0.020mm or even 0.010mm. To meet this requirement for the currently manufactured products, further processing is required, but this processing is difficult and cannot currently meet the usage requirements well.

[0004] Existing patent (publication number: CN218503907U) discloses a positioning fixture for machining the end face of a wheel hub bearing, comprising a base, a connecting member, and a fastening sleeve for connecting to the inner ring of the bearing. The base has a fastening hole along its circumference for fastening to the tailstock of a lathe, and an installation step for fastening to the outer ring of the bearing to be machined. The fastening sleeve has a cut-out, and connecting platforms are respectively provided at both ends of the fastening sleeve. Threaded holes are provided on the two connecting platforms, and fastening screws are threaded into the threaded holes. The connecting member has a connecting port for connecting to the soft jaws of the lathe spindle. A transmission component is provided between the connecting member and the fastening sleeve for rotating the fastening sleeve when the connecting member rotates. Its structure is simple, effectively connecting the wheel hub bearing to the lathe for end face machining, and is easy to operate, with good performance.

[0005] To address the aforementioned issues, existing patents offer solutions. However, the existing inner ring orientation and positioning structures for wheel bearings all involve directly using a disc of the same size as the inner ring of the wheel bearing, placing the wheel bearing on the surface of the disc, and positioning the inner ring of the wheel bearing. While this method can position the inner ring of the wheel bearing, it is quite troublesome when the wheel bearing needs to be removed, and the wheel bearing itself cannot guarantee stability when positioning the inner ring, resulting in insufficient practicality.

[0006] Therefore, an inner ring orientation positioning structure for wheel hub bearing machining is proposed. Utility Model Content

[0007] The purpose of this invention is to provide an inner ring orientation and positioning structure for wheel hub bearing processing. This structure solves the problems of existing inner ring orientation and positioning structures for wheel hub bearing processing, which directly use a disc equal in size to the inner ring of the wheel hub bearing, and then place the wheel hub bearing on the surface of the disc to position the inner ring of the wheel hub bearing. Although this method can position the inner ring of the wheel hub bearing, it is cumbersome when the wheel hub bearing needs to be removed, and the wheel hub bearing itself cannot guarantee stability when positioning the inner ring, resulting in insufficient practicality.

[0008] To achieve the above objectives, this utility model provides the following technical solution: an inner ring orientation and positioning structure for machining wheel hub bearings, comprising a machining table, a wheel hub bearing body fixedly connected to the top of the machining table, a positioning mechanism fixedly connected to the bottom of the machining table, and a limit mechanism fixedly connected to the top of the machining table;

[0009] The positioning mechanism includes a hydraulic cylinder, a mounting rod, a mounting ring, a connecting rod, a limiting ring, an expansion ring, and an inner cavity. The hydraulic cylinder is fixedly connected to the bottom of the processing table, the mounting rod is fixedly connected to the telescopic end of the hydraulic cylinder, the mounting ring is fixedly sleeved on the surface of the mounting rod, the connecting rod is movably connected to the top of the mounting ring, the limiting ring is movably connected to the top of the connecting rod, the expansion ring is sleeved on the surface of the limiting ring, and the inner cavity is formed in the inner wall of the wheel hub bearing body.

[0010] Preferably, the limiting mechanism includes an electric push rod, a clamp, and a threaded rod. The electric push rod is fixedly connected to both sides of the top of the processing table, the clamp is fixedly connected to the telescopic end of the electric push rod, and threaded holes are opened on the inner wall of the wheel hub bearing body and the inner wall of the processing table. The threaded rod is threadedly connected to the inner wall of the threaded hole.

[0011] Preferably, a mounting bracket is fixedly connected to the bottom of the processing table, and the hydraulic cylinder is fixedly connected to the inner wall of the mounting bracket.

[0012] Preferably, the inner wall of the processing table is provided with a groove, and the size of the groove is adapted to the size of the limiting ring.

[0013] Preferably, a limiting plate is fixedly connected to the bottom of the processing table, and the mounting rod passes through the inner wall of the limiting plate.

[0014] Preferably, the top of the limiting plate is provided with a placement groove, and the size of the mounting ring is adapted to the size of the placement groove.

[0015] Preferably, a limiting frame is fixedly connected to the top of the processing table, and the electric push rod is fixedly connected to the inner wall of the limiting frame.

[0016] Preferably, a PLC controller is fixedly connected to the front side of the processing table, and the size of the fixture is adapted to the size of the wheel hub bearing body.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This application utilizes the coordinated action of components such as the hydraulic cylinder, mounting rod, connecting rod, limiting ring, and expansion ring in the positioning mechanism. When the hydraulic cylinder pushes the mounting rod upward, the mounting ring drives the connecting rod upward, which in turn causes the limiting ring to rise and the expansion ring to expand. This allows for internal positioning of the wheel hub bearing body. Compared to the traditional disc positioning method, this method is more convenient for removing the wheel hub bearing body, requiring only the control of the hydraulic cylinder to descend. The operation is simple and quick.

[0019] 2. This application uses an electric push rod and clamp in the limiting mechanism to clamp and limit the wheel hub bearing body from the outside. In conjunction with the positioning mechanism, it further ensures the stability of the wheel hub bearing body during the processing, and improves the processing accuracy and practicality. Attached Figure Description

[0020] Figure 1 This is an overall structural diagram of the inner ring orientation and positioning of the hub bearing body of this utility model;

[0021] Figure 2 This is a schematic cross-sectional view of the inner cavity of the hub bearing body of this utility model;

[0022] Figure 3 This utility model Figure 2 A magnified structural diagram of point A;

[0023] Figure 4 This is a schematic diagram of the structure of the bottom of the processing table of this utility model;

[0024] Figure 5 This is a partial structural schematic diagram of the limiting mechanism of this utility model.

[0025] In the diagram, 1. Positioning mechanism; 11. Hydraulic cylinder; 12. Mounting bracket; 13. Mounting rod; 14. Mounting ring; 15. Connecting rod; 16. Limiting ring; 17. Expansion ring; 18. Placement groove; 19. Inner cavity; 2. Limiting mechanism; 21. Electric push rod; 22. Limiting bracket; 23. Fixture; 24. Threaded rod; 3. Wheel hub bearing body; 4. Machining table; 5. PLC controller; 6. Groove; 7. Limiting plate. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-5 The present invention provides the following technical solution:

[0028] An inner ring orientation and positioning structure for machining wheel hub bearings includes a machining table 4, a wheel hub bearing body 3 fixedly connected to the top of the machining table 4, a positioning mechanism 1 fixedly connected to the bottom of the machining table 4, and a limit mechanism 2 fixedly connected to the top of the machining table 4.

[0029] The positioning mechanism 1 includes a hydraulic cylinder 11, a mounting rod 13, a mounting ring 14, a connecting rod 15, a limiting ring 16, an expansion ring 17, and an inner cavity 19. The hydraulic cylinder 11 is fixedly connected to the bottom of the processing table 4. The mounting rod 13 is fixedly connected to the telescopic end of the hydraulic cylinder 11. The mounting ring 14 is fixedly sleeved on the surface of the mounting rod 13. The connecting rod 15 is movably connected to the top of the mounting ring 14. The limiting ring 16 is movably connected to the top of the connecting rod 15. The expansion ring 17 is sleeved on the surface of the limiting ring 16. The inner cavity 19 is opened in the inner wall of the wheel hub bearing body 3.

[0030] In this embodiment: the wheel hub bearing body 3 can be processed by setting up a processing table 4; the mounting rod 13 can be moved up and down by setting up a hydraulic cylinder 11; the mounting ring 14 can be installed by setting up the mounting rod 13; the limiting ring 16 and the mounting ring 14 can be connected by setting up a connecting rod 15; the expansion ring 17 can be installed by setting up the limiting ring 16; the expansion ring 17 can be used to orient and position the inner cavity 19 of the wheel hub bearing body 3; and the expansion ring 17 can be moved by opening the inner cavity 19.

[0031] Specifically, such as Figure 4 , Figure 5 As shown, the limiting mechanism 2 includes an electric push rod 21, a clamp 23 and a threaded rod 24. The electric push rod 21 is fixedly connected to both sides of the top of the processing table 4, and the clamp 23 is fixedly connected to the telescopic end of the electric push rod 21. Threaded holes are opened on the inner wall of the wheel hub bearing body 3 and the inner wall of the processing table 4, and the threaded rod 24 is threadedly connected to the inner wall of the threaded hole.

[0032] Specifically, such as Figure 4 As shown, a mounting bracket 12 is fixedly connected to the bottom of the processing table 4, and a hydraulic cylinder 11 is fixedly connected to the inner wall of the mounting bracket 12.

[0033] Specifically, such as Figure 3 As shown, the inner wall of the processing table 4 is provided with a groove 6, and the size of the groove 6 is adapted to the size of the limiting ring 16.

[0034] In this embodiment: the electric push rod 21 can drive the clamp 23 to move, the clamp 23 can limit the outer side of the wheel hub bearing body 3, the threaded rod 24 can limit the wheel hub bearing body 3 as needed, the threaded hole can install the threaded rod 24, the mounting bracket 12 can limit the hydraulic cylinder 11 and improve the stability of the hydraulic cylinder 11, and the groove 6 can be inserted into the inner wall of the groove 6 when the limiting ring 16 moves downward.

[0035] Specifically, such as Figure 3 , Figure 4 As shown, the bottom of the processing table 4 is fixedly connected to the limiting plate 7, and the mounting rod 13 passes through the inner wall of the limiting plate 7.

[0036] Specifically, such as Figure 3 As shown, the top of the limiting plate 7 is provided with a placement groove 18, and the size of the mounting ring 14 is adapted to the size of the placement groove 18.

[0037] In this embodiment: the position of the mounting rod 13 can be limited by setting the limiting plate 7, and the mounting ring 14 can be inserted into the inner wall of the mounting groove 18 when it moves downward by opening the placement groove 18.

[0038] Specifically, such as Figure 5 As shown, a limit frame 22 is fixedly connected to the top of the processing table 4, and an electric push rod 21 is fixedly connected to the inner wall of the limit frame 22.

[0039] Specifically, such as Figure 1 , Figure 5 As shown, a PLC controller 5 is fixedly connected to the front side of the processing table 4, and the size of the fixture 23 is adapted to the size of the wheel hub bearing body 3.

[0040] In this embodiment: the electric push rod 21 can be limited by setting the limit frame 22, thereby improving the stability of the electric push rod 21; the hydraulic cylinder 11 can be controlled by setting the PLC controller 5.

[0041] Working principle: When the user needs to process and position the wheel hub bearing body 3, first place the wheel hub bearing body 3 on the processing table 4. The PLC controller 5 controls the hydraulic cylinder 11 to start. The telescopic end of the hydraulic cylinder 11 drives the mounting rod 13 to rise. The mounting rod 13 drives the mounting ring 14 to rise. The mounting ring 14 drives the connecting rod 15 to rise. The connecting rod 15 drives the limiting ring 16 to rise. During the rise of the limiting ring 16, the expansion ring 17 expands and contacts the inner wall of the wheel hub bearing body 3, positioning the wheel hub bearing body 3 from the inside. Then, the PLC controller 5 controls the electric push rod 21 to start. The telescopic end of the electric push rod 21 pushes the clamp 23 to move towards the wheel hub bearing body 3, externally clamping and limiting the wheel hub bearing body 3. At the same time, the threaded rod 24 can be tightened for further fixation, completing the entire positioning process. After processing, the PLC controller 5 controls the hydraulic cylinder 11 to descend, causing the expansion ring 17 to contract and descend. At the same time, the electric push rod 21 is controlled to drive the clamp 23 to release. Finally, the wheel hub bearing body 3 can be removed.

[0042] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An inner ring orientation and positioning structure for machining wheel hub bearings, comprising a machining table (4), wherein a wheel hub bearing body (3) is fixedly connected to the top of the machining table (4), characterized in that: The bottom of the processing table (4) is fixedly connected to a positioning mechanism (1), and the top of the processing table (4) is fixedly connected to a limiting mechanism (2). The positioning mechanism (1) includes a hydraulic cylinder (11), a mounting rod (13), a mounting ring (14), a connecting rod (15), a limiting ring (16), an expansion ring (17), and an inner cavity (19). The hydraulic cylinder (11) is fixedly connected to the bottom of the processing table (4). The mounting rod (13) is fixedly connected to the telescopic end of the hydraulic cylinder (11). The mounting ring (14) is fixedly sleeved on the surface of the mounting rod (13). The connecting rod (15) is movably connected to the top of the mounting ring (14). The limiting ring (16) is movably connected to the top of the connecting rod (15). The expansion ring (17) is sleeved on the surface of the limiting ring (16). The inner cavity (19) is opened on the inner wall of the hub bearing body (3).

2. The inner ring orientation and positioning structure for wheel hub bearing machining according to claim 1, characterized in that: The limiting mechanism (2) includes an electric push rod (21), a clamp (23) and a threaded rod (24). The electric push rod (21) is fixedly connected to both sides of the top of the processing table (4). The clamp (23) is fixedly connected to the telescopic end of the electric push rod (21). The inner wall of the wheel hub bearing body (3) and the inner wall of the processing table (4) are provided with threaded holes. The threaded rod (24) is threadedly connected to the inner wall of the threaded hole.

3. The inner ring orientation and positioning structure for wheel hub bearing machining according to claim 1, characterized in that: The bottom of the processing table (4) is fixedly connected to a mounting frame (12), and the hydraulic cylinder (11) is fixedly connected to the inner wall of the mounting frame (12).

4. The inner ring orientation and positioning structure for wheel hub bearing machining according to claim 1, characterized in that: The inner wall of the processing table (4) is provided with a groove (6), and the size of the groove (6) is adapted to the size of the limiting ring (16).

5. The inner ring orientation and positioning structure for wheel hub bearing machining according to claim 1, characterized in that: The bottom of the processing table (4) is fixedly connected to a limiting plate (7), and the mounting rod (13) passes through the inner wall of the limiting plate (7).

6. The inner ring orientation and positioning structure for wheel hub bearing machining according to claim 5, characterized in that: The top of the limiting plate (7) is provided with a placement groove (18), and the size of the mounting ring (14) is adapted to the size of the placement groove (18).

7. The inner ring orientation and positioning structure for wheel hub bearing machining according to claim 2, characterized in that: The top of the processing table (4) is fixedly connected to a limiting frame (22), and the electric push rod (21) is fixedly connected to the inner wall of the limiting frame (22).

8. The inner ring orientation and positioning structure for wheel hub bearing machining according to claim 2, characterized in that: A PLC controller (5) is fixedly connected to the front side of the processing table (4), and the size of the fixture (23) is adapted to the size of the wheel hub bearing body (3).

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