Outer ring positioning clamp for assembling hub bearing unit

Abstract

The utility model discloses an outer ring positioning clamp for assembling a hub bearing unit. The outer ring positioning clamp comprises a base disc, an assembling seat and a positioning disc which are concentrically arranged, the assembling base is provided with a positioning through opening and an assembling cavity, the positioning ring base is fixed to the top, and the positioning disc is in nested fit with the positioning ring base through the assembling through opening. The clamping jaws slide in the radial direction of the assembling cavity, and the bottoms of the clamping jaws are matched with arc-shaped guide grooves of the driving disc through guide pin shafts to achieve synchronous folding and unfolding. The positioning plate is provided with a positioning pin shaft which is used for being matched with different flange plate mounting holes, and accurate positioning is ensured. The base disc is provided with an inner sleeve, the driving disc is provided with a receding through hole, and it is guaranteed that the outer ring is coaxially and stably clamped. According to the fixture, modular design is adopted, rapid remodeling can be achieved, self-locking clamping is achieved through worm and gear driving, the assembling precision, efficiency and stability are remarkably improved, and the high-precision assembling requirements of various hub bearings are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to hub bearing assembly technical field, specifically is a kind of hub bearing unit assembly with outer ring positioning fixture. BACKGROUND

[0002] Hub bearing unit is one of the core components of automobile suspension system, and its assembly precision directly affects the stability and safety of vehicle driving.Hub bearing is usually composed of inner ring, outer ring, rolling body and retainer, wherein the outer ring is connected with automobile suspension system through flange plate.In the assembly process, the outer ring needs to be accurately positioned and fixed to ensure the coaxiality and fitting precision with inner ring, rolling body and other components.However, due to the difference in installation hole position and size on the flange plate of hub bearing outer ring of different models, traditional fixture is difficult to realize quick adaptation and accurate positioning, resulting in low assembly efficiency and poor consistency.

[0003] At present, common hub bearing outer ring positioning fixture mostly adopts mechanical clamping or hydraulic driving mode, and the outer ring is fixed by rigid clamping jaw.However, such fixture usually has the following problems:

[0004] 1. Poor universality: traditional fixture is usually designed for specific model of outer ring, and the fixture structure needs to be adjusted or replaced when changing products, which is complicated and high in cost.

[0005] 2. Insufficient positioning accuracy: the installation hole position of outer ring flange plate directly affects the connection accuracy with suspension system, but the existing fixture lacks quick adaptation mechanism for different hole positions, which is easy to cause assembly deviation.

[0006] 3. Insufficient clamping stability: some fixtures use simple threads or air cylinder to drive clamping jaw, and the clamping force is difficult to accurately control, and it is easy to loosen in vibration environment, affecting the assembly quality.

[0007] 4. Complex operation: some hydraulic or pneumatic fixtures need additional power source, and the structure is complex and high in maintenance cost, which is not suitable for high-efficiency production line. INVENTION CONTENTS

[0008] In view of the above deficiencies in the prior art, the utility model aims to provide a hub bearing unit assembly outer ring positioning fixture, which can significantly improve the assembly precision, efficiency and stability of hub bearing outer ring, suitable for multi-variety, high-precision automobile bearing production demand, with high practical value and market prospect.

[0009] The utility model discloses a technical scheme adopted for realizing the above-mentioned purpose is: a kind of outer ring positioning fixture for hub bearing unit assembly, including the concentric arrangement of keeping from bottom to top base disc, assembly seat, positioning disc, the assembly seat is equipped with the positioning through opening of keeping intercommunication arrangement, assembly cavity, the assembly seat top is fixedly connected with positioning ring seat, the positioning disc axle center is equipped with the assembly through opening of embedding kiss with positioning ring seat, the assembly seat is fixedly installed to the upper of base disc.

[0010] It also includes a jaw, a driving disc, the jaw includes multiple groups in annular array distribution, each group of the jaw is slidably installed in the assembly cavity and slides radially, the driving disc is rotatably installed in the assembly cavity and arranged below the jaw, a plurality of arc-shaped guide grooves in annular array distribution are formed on the driving disc, each group of the jaw is fixedly connected with a guide pin shaft at the bottom, and the guide pin shaft is matched with the arc-shaped guide groove at the corresponding position.

[0011] A plurality of positioning pin shafts are fixedly connected to the upper surface of the positioning disc, an inner sleeve is fixedly connected to the axle center of the base disc, the inner sleeve is arranged in the assembly cavity and abuts against the driving disc, and a clearance hole is formed in the axle center of the driving disc.

[0012] On the basis of the above technical scheme, in order to ensure that the positioning disc can be quickly and stably installed on the top of the assembly seat, the following technical scheme is provided.

[0013] A plurality of positioning clamping grooves in annular array distribution are formed on the outer wall of the positioning ring seat, a positioning clamping block that is matched with the positioning clamping groove is fixedly connected to the inner wall of the assembly through opening, and the outer edge of the positioning disc is fixedly installed on the assembly seat through a bolt assembly.

[0014] On the basis of the above technical scheme, in order to ensure that the jaw can be stably assembled in the assembly cavity in a relatively sliding posture, the following technical scheme is provided.

[0015] A plurality of radial guide grooves in annular array distribution are formed in the assembly cavity, a radial guide rail is fixedly connected in the radial guide groove, the jaw is slidably installed in the radial guide groove, and a guide through groove that is matched with the radial guide rail is formed on the upper surface of the jaw.

[0016] On the basis of the above technical scheme, in order to ensure that the driving disc can be stably installed in the assembly cavity in a relatively rotating posture, the following technical scheme is provided.

[0017] An assembly ring seat is fixedly connected in the assembly cavity, and the driving disc is rotatably installed between the assembly ring seat and the jaw.

[0018] On the basis of the above technical scheme, in order to facilitate the stable operation of the driving disc and effectively lock the outer ring, the following technical scheme is provided.

[0019] The adjusting assembly comprises a driving bevel gear, a transmission bevel gear and a matched combination of a worm wheel and a worm, the transmission bevel gear is fixed to the driving disc, the driving bevel gear is rotatably installed in the assembly cavity and is in engagement with the transmission bevel gear, the worm wheel is coaxially fixed with the driving bevel gear and is arranged outside the assembly seat, and the worm is rotatably installed outside the assembly seat and is fixed with an operation knob at the shaft center.

[0020] On the basis of the above technical scheme, in order to realize stable installation of the positioning clamp on the assembly device and complete the whole step of hub bearing assembly, a connecting opening is formed in the outer edge of the base disc.

[0021] The utility model discloses the beneficial effect that:

[0022] 1. high universality and quick change, through the modular design positioning disc, can change according to the flange plate mounting hole position of different hub bearing outer rings, only need to change the corresponding specification positioning disc can realize quick change, greatly improve the universality of clamp, reduce the equipment cost when producing multiple models, positioning disc adopts standardization assembly opening (positioning card slot and positioning card block nest cooperation), ensure that different models positioning disc can be installed accurately, avoid artificial adjustment error.

[0023] 2. high-precision positioning, adopt the way of positioning pin shaft and flange plate mounting hole insertion cooperation, ensure that the outer ring always keeps accurate centering during the assembly process, avoid the problem of bearing assembly failure caused by deviation.

[0024] 3. Stable and reliable clamping mechanism, adopt multiple radial synchronous clamping jaws, cooperate with the arc-shaped guide groove and guide pin shaft of the driving disc, realize the synchronous retraction of the clamping jaw, ensure that the outer ring is uniformly stressed, avoid deformation or deviation caused by single-sided clamping, the driving disc is driven by worm and worm gear, has self-locking function, can automatically keep locking state after clamping, prevent loosening caused by vibration or external interference, improve assembly reliability.

[0025] 4. Convenient operation, labor-saving and high efficiency, realize the rotation of the driving disc through the manual knob and worm and worm gear reduction mechanism, labor-saving and accurate control of clamping force, avoid affecting assembly quality due to too tight or too loose.

[0026] 5. Compact structure, strong adaptability, the clamp as a whole adopts layered design (base disc, assembly seat, positioning disc), compact structure, can be flexibly integrated into automatic assembly line or manual tooling table, meet the needs of different production scenes. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a structure schematic view when the utility model clamps hub bearing outer ring;

[0028] Figure 2It is a structural schematic view of the outer ring of the hub bearing;

[0029] Figure 3 It is a schematic view of internal structure of the utility model;

[0030] Figure 4 It is a structural schematic view of the matched combination of the clamping jaw, the driving disc and the adjusting assembly;

[0031] Figure 5 It is a structural schematic view of the positioning disc;

[0032] Figure 6 It is a structural schematic view of the assembly seat;

[0033] Figure 7 It is Figure 6 It is a structural schematic view from another perspective;

[0034] Figure 8 It is a structural schematic view of the clamping jaw.

[0035] In the figure: 1 base disc, 11 inner sleeve, 12 connecting opening, 2 assembly seat, 21 positioning opening, 22 assembly cavity, 23 positioning ring seat, 24 positioning clamping groove, 25 radial guide groove, 26 radial guide rail, 27 assembly ring seat, 28 ear seat, 3 positioning disc, 31 assembly opening, 32 positioning pin shaft, 33 positioning clamping block, 34 bolt assembly, 4 clamping jaw, 41 guide pin shaft, 42 guide slot, 43 collet, 5 driving disc, 51 arc-shaped guide groove, 52 accommodation through hole, 61 driving bevel gear, 62 transmission bevel gear, 63 worm wheel, 64 worm, 65 operation knob, 7 outer ring, 71 flange plate, 72 mounting hole. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.

[0037] Please refer to Figures 1-8 A hub bearing unit assembly outer ring positioning clamp, including the base disc 1, the assembly seat 2, the positioning disc 3 that keep from below to above concentric arrangement, the positioning opening 21, the assembly cavity 22 that keep intercommunication arrangement are set up on the assembly seat 2, the positioning ring seat 23 is fixedly connected on the top of assembly seat 2, the assembly opening 31 that is nested with the positioning ring seat 23 is set up in the axle center of positioning disc 3, and the assembly seat 2 is fixedly installed to the base disc 1.

[0038] Also included are the clamping jaws 4, which include multiple groups arranged in a ring array, each group of clamping jaws 4 being slidingly mounted into the assembly cavity 22 and sliding in the radial direction, and the driving disc 5, which is rotatably mounted into the assembly cavity 22 and arranged below the clamping jaws 4, the driving disc 5 being provided with multiple groups of arc-shaped guide grooves 51 arranged in a ring array, and each group of clamping jaws 4 being provided with a guide pin 41 fixed at the bottom, the guide pin 41 being in matched combination with the arc-shaped guide groove 51 at the corresponding position.

[0039] The upper surface of the positioning disc 3 is provided with multiple groups of positioning pins 32, the inner sleeve 11 is fixed at the shaft center of the base disc 1, the inner sleeve 11 is arranged in the assembly cavity 22 and abuts against the driving disc 5, and the shaft center of the driving disc 5 is provided with a let-out through hole 52.

[0040] The positioning through hole 21, the inner sleeve 11 and the let-out through hole 52 have the same inner diameter, so as to stably arrange the outer ring 7 of the hub bearing thereinto, the flange plate 71 provided on the outer ring 7 of the hub bearing is used for connecting the suspension system of the automobile, and therefore the position and size of the mounting hole 72 provided on the flange plate 71 of the outer ring 7 of different models are different.

[0041] Therefore, the positioning disc 3 can be adaptively designed according to different flange plates 71, and when assembling a specific hub bearing, the corresponding positioning disc 3 is selected for assembly, the positioning pin 32 provided at the specific position thereof is nested and inserted into the mounting hole 72 on the flange plate 71, and the outer ring 7 is accurately positioned.

[0042] When the driving disc 5 is controlled to rotate, the arc-shaped guide groove 51 thereon cooperates with the guide pin 41 to synchronously push and retract each group of clamping jaws 4 in the radial direction, so as to realize the clamping or loosening adjustment of the outer ring 7.

[0043] The assembly seat 2 and the base disc 1 are fixedly combined in a detachable manner, for example, by bolts.

[0044] In order to ensure that the positioning disc 3 can be quickly and stably mounted on the top of the assembly seat 2, the following technical solutions are provided.

[0045] The outer wall of the positioning ring seat 23 is provided with multiple groups of positioning clamping grooves 24 arranged in a ring array, the inner wall of the assembly through hole 31 is fixedly connected with the positioning clamping block 33 in nested and consistent fit with the positioning clamping groove 24, and the outer edge of the positioning disc 3 is fixedly mounted onto the assembly seat 2 by the bolt assembly 34.

[0046] The assembly through hole 31 and the positioning clamping block 33 provided on different positioning discs 3 are standardized designed, and the difference lies in the size and position of the guide pin 41, the nested cooperation of the positioning clamping groove 24 and the positioning clamping block 33 can ensure that the positioning disc 3 of a specific model is accurately assembled on the top of the assembly seat 2, and the fixed combination of the two is realized by the bolt assembly 34.

[0047] To ensure that the clamping jaw 4 can be stably assembled in the assembly cavity 22 in a relative sliding posture, the following technical solutions are provided.

[0048] A plurality of radial guide grooves 25 arranged in a ring array are formed in the assembly cavity 22, a radial guide rail 26 is fixedly connected in the radial guide groove 25, the clamping jaw 4 is slidingly installed in the radial guide groove 25, and a guide through groove 42 adapted to the radial guide rail 26 is formed on the upper surface of the clamping jaw 4.

[0049] The radial guide groove 25 and the radial guide rail 26 provide stable guiding, so that the clamping jaw 4 can stably slide in the radial direction in the assembly cavity 22. A chuck 43 is arranged at the inner side end of the clamping jaw 4, and the chuck 43 can effectively abut against the outer ring 7 of the hub bearing, thereby stably clamping the outer ring 7.

[0050] To ensure that the driving disc 5 can be stably installed in the assembly cavity 22 in a relative rotating posture, the following technical solutions are provided.

[0051] A mounting ring seat 27 is fixedly connected in the assembly cavity 22, and the driving disc 5 is rotatably installed between the mounting ring seat 27 and the clamping jaw 4.

[0052] The mounting ring seat 27 can effectively position the driving disc 5, so as to ensure that the driving disc 5 is stably installed in a relative rotating posture.

[0053] To facilitate the stable operation of the driving disc 5 and control the effective locking of the outer ring 7, the following technical solutions are provided.

[0054] Further comprising an adjusting assembly, the adjusting assembly comprises a driving bevel gear 61, a transmission bevel gear 62, and a matched combination of a worm wheel 63 and a worm 64. The transmission bevel gear 62 is fixedly connected to the driving disc 5. The driving bevel gear 61 is rotatably installed in the assembly cavity 22 and is in meshing engagement with the transmission bevel gear 62. The worm wheel 63 is coaxially fixedly connected with the driving bevel gear 61 and is arranged outside the assembly seat 2. The worm 64 is rotatably installed outside the assembly seat 2 and has an operation knob 65 fixedly connected at the shaft center.

[0055] An ear seat 28 is fixedly connected to the outer wall of the assembly seat 2, so that the worm 64 can be rotatably installed on the ear seat 28. When the operation knob 65 drives the worm 64 to rotate, the worm wheel 63, the driving bevel gear 61, the transmission bevel gear 62, and the driving disc 5 can be stably operated.

[0056] Since the combination of the worm 64 and the worm wheel 63 has the characteristics of speed reduction and torque increase, the driving disc 5 can be stably operated in a relatively labor-saving manner, and the outer ring 7 is effectively locked by the clamping jaw 4. In the locked state of the outer ring 7, due to the structural characteristics of the worm 64, the worm wheel 63 is one-way self-locked, so that the driving disc 5 and the clamping jaw 4 are always in a locked state, thereby ensuring the stability of clamping the outer ring 7.

[0057] In order to realize the stable installation of the positioning fixture on the assembling machine, the connecting through hole 12 is arranged on the outer edge of the base disc 1, and the connecting through hole 12 is fixed to a specific position of the assembling machine through bolt fixation, so that the use requirement of the positioning fixture is realized.

[0058] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0059] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be properly combined to form other embodiments that those skilled in the art can understand.

Claims

1. A positioning jig for an outer ring of a hub bearing unit assembly, characterized by: The assembly includes a base plate (1), an assembly seat (2), and a positioning plate (3) arranged concentrically from bottom to top. The assembly seat (2) has a positioning port (21) and an assembly cavity (22) arranged in a continuous manner. A positioning ring seat (23) is fixedly connected to the top of the assembly seat (2). The positioning plate (3) has an assembly port (31) at its axis that is nested and matched with the positioning ring seat (23). The assembly seat (2) is fixedly installed on the base plate (1). It also includes grippers (4) and a drive disk (5). The grippers (4) include multiple sets arranged in a ring array. Each set of grippers (4) is slidably installed in the assembly cavity (22) and slides radially. The drive disk (5) is rotatably installed in the assembly cavity (22) and arranged below the grippers (4). The drive disk (5) has multiple sets of arc-shaped guide grooves (51) arranged in a ring array. Each set of grippers (4) has a guide pin (41) fixedly connected to the bottom. The guide pin (41) and the arc-shaped guide groove (51) at the corresponding position are matched and combined. The upper surface of the positioning disk (3) is fixed with multiple sets of positioning pins (32), and the base disk (1) is fixed with an inner sleeve (11) at the shaft center. The inner sleeve (11) is arranged in the assembly cavity (22) and abuts against the drive disk (5). The drive disk (5) has a clearance through hole (52) at the shaft center.

2. The outer ring positioning jig for assembling a hub bearing unit according to claim 1, characterized in that: The outer wall of the positioning ring seat (23) has multiple sets of positioning slots (24) arranged in a ring array. The inner wall of the assembly port (31) is fixed with a positioning block (33) that is nested and matched with the positioning slot (24). The outer edge of the positioning disk (3) is fixedly installed on the assembly seat (2) by bolt assembly (34).

3. The outer ring positioning jig for assembling a hub bearing unit according to claim 1, characterized in that: The assembly cavity (22) has multiple sets of radial guide grooves (25) arranged in a ring array. A radial guide rail (26) is fixed in the radial guide groove (25). The gripper (4) is slidably installed in the radial guide groove (25), and a guide groove (42) adapted to the radial guide rail (26) is provided on the upper surface of the gripper (4).

4. The outer ring positioning jig for assembling a hub bearing unit according to claim 1, characterized in that: An assembly ring seat (27) is fixedly connected in the assembly cavity (22), and the drive disk (5) is rotatably installed between the assembly ring seat (27) and the gripper (4).

5. The outer race positioning jig for assembling a hub bearing unit according to claim 1, characterized in that: It also includes an adjustment assembly, which includes a drive bevel gear (61), a transmission bevel gear (62), and a matching combination of a worm gear (63) and a worm (64). The transmission bevel gear (62) is fixed to the drive disk (5). The drive bevel gear (61) is rotatably installed in the assembly cavity (22) and meshes with the transmission bevel gear (62). The worm gear (63) is coaxially fixed to the drive bevel gear (61) and arranged on the outside of the assembly base (2). The worm (64) is rotatably installed on the outside of the assembly base (2) and an operating knob (65) is fixed at the center of the shaft.

6. The outer race positioning fixture for hub bearing unit assembly of claim 1, wherein: The outer edge of the base plate (1) is provided with a connection port (12).

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