Self-centering wheel end radial runout testing fixture

Abstract

The utility model provides a self-centering wheel end radial runout testing fixture. The self-centering wheel end radial runout testing fixture comprises a base, a wheel bearing module and a wheel detection module, the wheel bearing module comprises a core shaft and a rotating module; the core shaft is vertically arranged and fixed on the base; the rotating module is rotatably assembled on the core shaft; the rotating module comprises a core mold fixing disc, an elastic supporting piece, a guide column and a core mold. The mandrel fixing disc is provided with a containing groove with an upward opening, the guide column is vertically arranged in the containing groove, and the center axis of the guide column coincides with the center axis of the mandrel. The core mold is assembled in the containing groove in a lifting mode through an elastic supporting piece and is in guide fit with the guide column. A conical surface with a narrow upper part and a wide lower part is formed on the peripheral surface of the core mold; rapid positioning and assembling of wheels are achieved, and efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wheel inspection tools, and particularly relates to a self-centering wheel end run-out inspection tool. Background Art

[0002] A wheel is composed of a wheel spoke and a rim welded together. The wheel is an important component of an automobile, and its end run-out can affect the driving texture of the vehicle. It undergoes multiple rounds of inspections before leaving the factory to ensure that it meets the quality standards.

[0003] Traditional end run-out inspection is to place the wheel on the inspection tool and conduct multi-point inspections. After passing, it enters the next process. During the inspection, the three-jaw chuck is manually locked to perform rotational inspection. Due to the need for multi-point inspections, manually locking and loosening the chuck is inefficient, and it is easy to scratch the wheel center hole. Summary of the Utility Model

[0004] Therefore, to solve the above problems, the utility model provides a self-centering wheel end run-out inspection tool.

[0005] To achieve the above object, the technical solution provided by the utility model is as follows:

[0006] A self-centering wheel end run-out inspection tool includes a base, a wheel bearing module, and a wheel detection module disposed on the base; the wheel bearing module includes a mandrel and a rotation module; the mandrel is vertically disposed and fixed on the base; the rotation module is rotatably assembled on the mandrel; the rotation module includes a core mold fixing plate, an elastic support member, a guide post, and a core mold; the core mold fixing plate has a receiving groove with an upward opening, the guide post is vertically disposed in the receiving groove, and the central axes of the guide post and the mandrel coincide; the core mold is vertically movably assembled in the receiving groove through the elastic support member and forms a guiding fit with the guide post; a tapered surface that is narrower at the top and wider at the bottom is formed on the outer peripheral surface of the core mold.

[0007] Further, the core mold is provided with a central guiding hole, and the central guiding hole of the core mold is sleeved on the guide post with a gap to form a vertically movable guiding fit with the guide post.

[0008] Further, the elastic support member is a spring, and a plurality of springs are provided and evenly distributed along the periphery of the guide post to jointly support the core mold.

[0009] Further, an installation blind hole is provided at the bottom of the receiving groove, and the spring is positioned and assembled in the installation blind hole.

[0010] Further, the core mold fixing plate is provided with a guide post fixing hole at the central position of the receiving groove, and the guide post is press-fitted in the guide post fixing hole.

[0011] Further, the wheel bearing module further includes a bearing, a bearing housing, and a connecting plate. The bearing housing is sleeved on the mandrel; the bearing is assembled between the mandrel and the bearing housing so that the bearing housing can rotate relative to the mandrel. The connecting plate is fixed on the bearing housing, and the mandrel fixing plate is installed on the connecting plate.

[0012] Further, a radial adjusting member is further provided between the connecting plate and the mandrel fixing plate to adjust the radial runout error of the mandrel fixing plate.

[0013] Further, the connecting plate has a mounting groove with an upward opening. The bottom of the mandrel fixing plate is provided with a downward protruding mounting boss. The mounting boss of the mandrel fixing plate is assembled in the mounting groove, and the radial adjusting member is assembled on the groove wall of the mounting groove and acts on the mounting boss of the mandrel fixing plate.

[0014] Further, the radial adjusting member is an adjusting screw.

[0015] Further, a fastening nut is also screwed onto the top of the mandrel, and the fastening nut locks the bearing to the mandrel.

[0016] Through the technical solution provided by the present utility model, the following beneficial effects are achieved:

[0017] During detection, the wheel is placed on the wheel bearing module. The conical surface of the mandrel can automatically guide and align the wheel, realizing automatic centering of the wheel. After the mandrel bears the gravity of the wheel, it moves downward against the elastic force of the elastic support member until the wheel abuts against the mandrel fixing plate for support; in this way, rapid positioning and assembly of the wheel are realized, improving efficiency, and the inspection work can be quickly carried out without the cumbersome method of locking and loosening in the past; moreover, this automatic centering of the wheel can effectively avoid abnormalities such as scratches on the wheel during the operation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Shown is a partial structural schematic diagram of the self-centering wheel end runout inspection tool in the embodiment;

[0019] Figure 2 Shown is a structural schematic diagram of the self-centering wheel end runout inspection tool during detection in the embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] To further illustrate the embodiments, the present utility model provides drawings. These drawings are a part of the disclosure of the present utility model, which are mainly used to illustrate the embodiments and can be used to explain the operating principle of the embodiments in conjunction with the relevant descriptions in the specification. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the present utility model. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0021] In the description of the present invention, the orientation or positional relationships such as "upper", "lower", "left", "right", "front", "rear", etc. are based on the orientation or positional relationship shown in the drawings. These are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0022] The present utility model will be further described below in conjunction with the drawings and specific embodiments.

[0023] Refer to Figure 1 and Figure 2 As shown, a self - centering wheel end run - out inspection tool provided in this embodiment includes a base 10, a wheel loading module 20 and a wheel detection module 30 disposed on the base 10. Specifically, the wheel loading module 20 is used to load the wheel 1 to be detected, and the wheel detection module 30 detects the end run - out of the wheel 1 on the wheel loading module 20. Further, the wheel detection module 30 adopts an existing structure, such as a dial indicator, a micrometer, etc. In this specific embodiment, a support frame 11 is fixed on the base 10, and the wheel detection module 30 is disposed on the support frame 11.

[0024] The wheel loading module 30 includes a mandrel 21 and a rotation module. The mandrel 21 is vertically disposed and fixed on the base 10. The rotation module is rotatably assembled on the mandrel 21, that is, it rotates around the central axis of the mandrel 21.

[0025] The rotation module includes a core mold fixing disk 22, an elastic support member 24, a guide post 25 and a core mold 23. The core mold fixing disk 22 has a receiving groove 221 with an upward - opening. The guide post 25 is vertically disposed in the receiving groove 221, and the central axes of the guide post 25 and the mandrel 21 coincide to achieve coaxial setting. The core mold 23 is vertically and liftably assembled in the receiving groove 221 through the elastic support member 24 and forms a guiding fit with the guide post 25. The setting of the guide post 25 can well guide the core mold 23 in the vertical direction and prevent the core mold 23 from being eccentric. The outer peripheral surface of the core mold 23 forms a conical surface 231 that is narrower at the top and wider at the bottom.

[0026] When using the self - centering wheel end run - out inspection tool of the present application for inspection, first place the wheel 1 on the wheel bearing module 20. Specifically, the central hole of the wheel 1 is aligned with the core mold 23 and sleeved. The conical surface 231 on the outer periphery of the core mold 23 can automatically guide and align the wheel 1, achieving automatic centering of the wheel 1. After the core mold 23 bears the gravity of the wheel, it moves downward against the elastic force of the elastic support member 24 until the wheel 1 abuts against the core mold fixing plate 22 for support. In this way, rapid positioning and assembly of the wheel 1 are realized, and the inspection work can be quickly carried out without the cumbersome method of locking and loosening in the past. Moreover, this automatic centering of the wheel 1 can effectively avoid abnormalities such as scratches on the wheel 1 during the operation process.

[0027] Specifically, in the inspection stage, a dial indicator or a micrometer of the wheel inspection module 30 abuts against the outer peripheral surface of the wheel 1 together, and the wheel 1 is driven to rotate by rotating the rotation module, thereby realizing the detection of the end run - out.

[0028] Specifically, the guiding and matching method between the core mold 23 and the guide post 25 is as follows: The core mold 23 is provided with a central guiding hole 232, and the central guiding hole 232 of the core mold 23 is sleeved on the guide post 25 with a clearance to form a liftable guiding and matching with the guide post 25. In this way, while the core mold 23 floats up and down, it can also maintain a certain coaxial accuracy.

[0029] Furthermore, the elastic support member 24 is a spring 241. There are multiple springs 241, four in this embodiment, and they are evenly distributed along the periphery of the guide post 25 to jointly support the core mold 23. Without external force, the core mold 23 is propped up by the spring 241 and protrudes from the upper surface of the core mold fixing plate 22. When the wheel 1 is placed, the gravity exerted by the wheel 1 forces the spring 241 to compress, enabling the wheel 1 to buffer and descend while automatically centering and aligning until it abuts against the upper surface of the core mold fixing plate 22. More specifically, an installation blind hole 222 is opened at the bottom of the accommodation groove 221, and the spring 241 is positioned and assembled in the installation blind hole 222 to realize the limitation of the spring 241, making the support more stable. The structure of using the spring 241 is simple and easy to implement. Of course, in other embodiments, the elastic support member 24 can also adopt other structures that can provide elastic buffering.

[0030] Furthermore, in this embodiment, the core mold fixing plate 22 is provided with a guide post fixing hole at the central position of the accommodation groove 221, and the guide post 25 is press - fitted in the guide post fixing hole, thus realizing the stable assembly of the guide post 25.

[0031] In this embodiment, the wheel bearing module further specifically includes a bearing 28, a bearing housing 29, and a connecting plate 26. The bearing housing 29 is sleeved on the mandrel 21; the bearing 28 is assembled between the mandrel 21 and the bearing housing 29 so that the bearing housing 29 can rotate relative to the mandrel 21. Specifically, in this embodiment, both the upper and lower ends of the bearing housing 29 and the mandrel 21 are connected by bearings 28, which is more stable. At the same time, a fastening nut 291 is screwed onto the top of the mandrel 21. The fastening nut 291 locks the bearing 28 to the mandrel 21, that is, by tightening the fastening nut 291, the bearing 28 can be fixed to ensure that the bearing 28 does not loosen.

[0032] The connecting plate 26 is fixed to the bearing housing 29, and the core mold fixing plate 22 is installed on the connecting plate 26; specifically, a radial adjusting member 27 is further provided between the connecting plate 26 and the core mold fixing plate 22 to adjust the radial runout error of the core mold fixing plate 22. That is, when there is a deviation between the central axes of the guide post 25 and the mandrel 21, the radial adjusting member 27 can drive the core mold fixing plate 22 to move radially relative to the connecting plate 26, so as to adjust until the guide post 25 and the mandrel 21 are coaxial.

[0033] Specifically, the connecting plate 26 has a mounting groove with an upward opening. The bottom of the core mold fixing plate 22 is provided with a downward protruding mounting boss 223. The mounting boss 223 of the core mold fixing plate 22 is assembled in the mounting groove. The radial adjusting member 27 is assembled on the groove wall of the mounting groove and acts on the mounting boss 223 of the core mold fixing plate 22; in this embodiment, the radial adjusting member 27 is an adjusting screw, and the number is multiple, which are distributed on the outer periphery of the mounting boss 223; the adjusting screw is screwed on the groove wall of the mounting groove. When the core mold fixing plate 22 and the guide post 25 deviate to one side (such as to the right), the adjusting screw on the right rotates in and the adjusting screw on the left rotates out to adjust the core mold fixing plate 22 to the left until the guide post 25 and the mandrel 21 are coaxial; with such a setting, the adjustment is convenient and the structure is simple.

[0034] The above discloses one of the more preferred solutions of the wheel bearing module 20. Of course, in other embodiments, the structure of the wheel bearing module 20 is not limited to this.

[0035] Although the present invention has been specifically shown and described in combination with the preferred embodiments, those skilled in the art should understand that various changes can be made to the present invention in terms of form and details without departing from the spirit and scope of the present invention defined by the appended claims, and all of them are within the protection scope of the present invention.

Claims

1. A self-centering wheel end runout inspection tool, comprising a base and a wheel bearing module and a wheel detection module provided on the base; characterized in that: The wheel bearing module includes a mandrel and a rotating module. The mandrel is vertically arranged and fixed on the base. The rotating module is rotatably assembled on the mandrel. The rotating module includes a core mold fixing plate, an elastic support member, a guide post, and a core mold. The core mold fixing plate has a receiving groove with an upward opening. The guide post is vertically arranged in the receiving groove, and the central axes of the guide post and the mandrel coincide. The core mold is vertically and movably assembled in the receiving groove through the elastic support member and forms a guiding fit with the guide post. The outer peripheral surface of the core mold forms a conical surface that is narrower at the top and wider at the bottom.

2. The self - centering wheel end run - out inspection tool according to claim 1, wherein: The core mold is provided with a central guiding hole, and the central guiding hole of the core mold is sleeved on the guide post with a clearance to form a vertically movable guiding fit with the guide post.

3. The self-centering wheel end runout inspection tool according to claim 1, characterized in that: The elastic support member is a spring. A plurality of springs are provided and evenly distributed along the periphery of the guide post to jointly support the core mold.

4. The self-centering wheel end runout inspection tool according to claim 3, characterized in that: A mounting blind hole is formed at the bottom of the receiving groove, and the spring is positioned and assembled in the mounting blind hole.

5. The self-centering wheel end runout inspection tool according to claim 1, characterized in that: The core mold fixing plate is provided with a guide post fixing hole at the central position of the receiving groove, and the guide post is press-fitted in the guide post fixing hole.

6. The self-centering wheel end runout inspection tool according to claim 1, characterized in that: The wheel bearing module further includes a bearing, a bearing seat, and a connecting plate. The bearing seat is sleeved on the mandrel. The bearing is assembled between the mandrel and the bearing seat to enable the bearing seat to rotate relative to the mandrel. The connecting plate is fixed on the bearing seat, and the core mold fixing plate is mounted on the connecting plate.

7. The self-centering wheel end runout inspection tool according to claim 6, characterized in that: A radial adjusting member is further provided between the connecting plate and the core mold fixing plate to adjust the radial runout error of the core mold fixing plate.

8. The self-centering wheel end runout inspection tool according to claim 7, wherein: The connecting plate has a mounting groove with an upward opening. The bottom of the core mold fixing plate is provided with a downward protruding mounting boss. The mounting boss of the core mold fixing plate is assembled in the mounting groove. The radial adjusting member is assembled on the groove wall of the mounting groove and acts on the mounting boss of the core mold fixing plate.

9. The self-centering wheel end runout inspection tool according to claim 7 or 8, characterized in that: The radial adjusting member is an adjusting screw.

10. The self-centering wheel end runout inspection tool according to claim 6, characterized in that: A fastening nut is also screwed on the top of the mandrel, and the fastening nut locks the bearing to the mandrel.

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