Motorcycle boss type spoke hub and hub finish turning spoke tool

Abstract

The utility model relates to the technical field of hub machining, in particular to a boss type spoke hub of a motorcycle and a hub finish turning spoke tool. Comprising a bottom plate and an auxiliary device, the auxiliary device comprises a positioning plate, a positioning table, a stepped mandrel, a T-shaped screw rod, a fastening assembly and an anti-rotation assembly, during machining, a hub is vertically and downwards placed on the stepped mandrel, the size and the structure of the stepped mandrel are directly set according to an inner hole of the hub, and when the hub is placed, the T-shaped screw rod is rotated; when the hub is machined, the six positioning holes in the bottom of the hub are matched with the anti-rotation assembly for initial positioning, then the T-shaped screw rod is installed for pressing, finally turning machining can be conducted through the vertical turning center, during machining, due to the effect of the stepped mandrel, the center hole of the hub is subjected to radial force, and the machining face is evenly stressed during machining; the surface smoothness of the machined hub is uniform, the product quality can be improved, and therefore the product machining quality can be effectively improved when the hub is subjected to finish turning of spokes.

Description

Technical Field

[0001] This utility model relates to the field of wheel hub processing technology, and in particular to a motorcycle boss-type spoked wheel hub and a wheel hub precision spoke turning tooling. Background Technology

[0002] Motorcycles are a common means of transportation, and the motorcycle wheel hub is one of its important components. The wheel hub is the intermediate part that fixes the tire and connects the tire to the axle. It is an important component of the motorcycle and is responsible for bearing the weight of the vehicle, transmitting power, and supporting the tire. As a rotating moving part, the wheel hub has high requirements for comprehensive performance.

[0003] When machining traditional wheel spokes, clamping plates are often used to hold the bottom of the workpiece or the outer side of the workpiece for clamping and fixing, leaving the center hole area suspended. During machining, the tool's feed process can cause vibration, leading to tool vibration on the machined surface and making it difficult to meet product quality requirements. Utility Model Content

[0004] The purpose of this utility model is to provide a tooling for precision machining spokes of wheel hubs, which aims to effectively improve the product processing quality during the precision machining of spokes of wheel hubs.

[0005] To achieve the above objectives, this utility model provides a wheel hub precision machining spoke tooling, including a base plate and auxiliary devices;

[0006] The auxiliary device includes a positioning plate, a positioning platform, a stepped mandrel, a T-shaped screw, a fastening assembly, and an anti-rotation assembly. The positioning plate is detachably connected to the base plate and is located on the base plate. The positioning platform is integrally formed with the positioning plate and is located on top of the positioning plate. The stepped mandrel is fixedly connected to the positioning platform and is located on top of the positioning platform. The T-shaped screw is threadedly connected to the stepped mandrel and is located on top of the stepped mandrel. The fastening assembly is located on the side of the positioning plate near the base plate, and the anti-rotation assembly is located on the positioning platform.

[0007] The fastening assembly includes a positioning pin and a locking bolt. The positioning pin is slidably connected to the base plate and the positioning plate respectively, and passes through the positioning plate. The locking bolt is detachably connected to the positioning plate and threadedly connected to the base plate, and is located on the side of the positioning plate closer to the base plate.

[0008] The anti-rotation component includes positioning posts and fastening bolts. The positioning posts are detachably connected to the positioning platform and are evenly spaced in a ring on the positioning platform. There are six positioning posts in total. The fastening bolts are detachably connected to the positioning posts and are threadedly connected to the positioning platform. They are located on the side of the positioning posts closer to the positioning platform.

[0009] The locating pin has a threaded hole at its top.

[0010] The outer surface of the stepped mandrel is coated with a wear-resistant coating.

[0011] One type of motorcycle hub with a raised spoke can be machined by fixing the spokes with a hub precision machining fixture.

[0012] This utility model discloses a wheel hub spoke precision machining fixture. A base plate is used to fix the fixture on the worktable of a vertical turning center. A positioning plate is mounted on the base plate via a fastening assembly. The positioning table and positioning plate are integrally formed to ensure good strength. A stepped mandrel is fixedly mounted on the positioning table, and a T-screw is threadedly connected to the stepped mandrel. The fastening assembly is located on the side of the positioning plate near the base plate, and an anti-rotation assembly is located on the positioning table. During machining, the wheel hub is first slid vertically downwards onto the stepped mandrel. The dimensions and structure of the stepped mandrel are directly referenced to the inner hole of the wheel hub. Upon insertion, the six positioning holes on the bottom of the wheel hub will engage with the anti-rotation assembly for initial positioning.

[0013] Then, the T-screw is installed for clamping, and finally, it can be machined by a vertical turning center. During machining, the center hole of the hub is subjected to radial force due to the action of the stepped mandrel. The machining surface is subjected to uniform force during machining, and the surface finish of the wheel hub after machining is more uniform, which can improve the product quality. In this way, the product processing quality can be effectively improved when machining spokes in the wheel hub. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0015] Figure 1 This is a schematic diagram of the overall structure of the wheel hub precision machining spoke tooling according to the first embodiment of this utility model.

[0016] Figure 2 This is a schematic diagram of the stepped mandrel according to the first embodiment of this utility model.

[0017] Figure 3 This is a schematic diagram of the overall structure of the wheel hub precision machining spoke tooling according to the second embodiment of this utility model.

[0018] In the diagram: 101-base plate, 102-positioning plate, 103-positioning platform, 104-stepped mandrel, 105-T-shaped screw, 106-positioning pin, 107-locking bolt, 108-positioning post, 109-fastening bolt, 201-wear-resistant coating. Detailed Implementation

[0019] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0020] Example 1:

[0021] like Figure 1 and Figure 2 As shown, where Figure 1 This is a schematic diagram of the overall structure of the wheel hub precision machining spoke tooling. Figure 2 This is a schematic diagram of the stepped mandrel 104. This utility model provides a tooling for precision machining spokes on a wheel hub: it includes a base plate 101 and auxiliary devices. The auxiliary devices include a positioning plate 102, a positioning table 103, a stepped mandrel 104, a T-screw 105, a fastening assembly, and an anti-rotation assembly. The fastening assembly includes a positioning pin 106 and a locking bolt 107, and the anti-rotation assembly includes a positioning post 108 and a fastening bolt 109. This solution effectively improves the product processing quality during the precision machining of spokes on a wheel hub. It is understood that this solution can improve the processing quality of precision-machined spokes on a wheel hub.

[0022] In this embodiment, the base plate 101 is provided with a through hole in an annular shape, which facilitates fixing it to the worktable of the vertical turning center by bolts.

[0023] The positioning plate 102 is detachably connected to the base plate 101 and is located on the base plate 101. The positioning platform 103 is integrally formed with the positioning plate 102 and is located on top of the positioning plate 102. The stepped mandrel 104 is fixedly connected to the positioning platform 103 and is located on top of the positioning platform 103. The T-shaped screw 105 is threadedly connected to the stepped mandrel 104 and is located on top of the stepped mandrel 104. The fastening assembly is located on the side of the positioning plate 102 near the base plate 101. The anti-rotation assembly is located on the positioning platform 103. The positioning plate 102 is mounted on the base plate 101 via the fastening assembly. The positioning platform 103 is integrally formed with the positioning plate 102 to ensure strength. Through cavities are provided on the bottom end faces of the base plate 101 and the positioning plate 102. Multiple bolt holes and positioning holes are provided in a ring at intervals on the bottom end face of the positioning platform 103 to facilitate the fixing of the stepped mandrel 104 to the positioning platform 103 by fixing pins and bolts. The size and structure of the stepped mandrel 104 are set according to the inner hole size of the wheel hub to facilitate direct fitting of the wheel hub. Threaded holes are provided on the top end face of the stepped mandrel 104 to facilitate direct installation of the external threaded end of the bottom of the T-shaped screw 105. The top of the T-shaped screw 105 is provided with an internal hexagonal cavity to facilitate rotation of the internal hexagonal wrench. The anti-rotation assembly is used to prevent the workpiece from rotating during processing.

[0024] Secondly, the positioning pin 106 is slidably connected to the base plate 101 and the positioning plate 102 respectively, and passes through the positioning plate 102; the locking bolt 107 is detachably connected to the positioning plate 102 and threadedly connected to the base plate 101, and is located on the side of the positioning plate 102 closer to the base plate 101. The positioning plate 102 is provided with a through pin hole, the base plate 101 is provided with a non-through fitting pin hole, and the base plate 101 is provided with a mounting thread hole, so that the positioning plate 102 can be fixed to the base plate 101 by the positioning pin 106 and the locking bolt 107.

[0025] Then, the positioning posts 108 are detached from the positioning platform 103 and evenly spaced in a ring on the positioning platform 103, with six positioning posts 108 in total. The fastening bolts 109 are detached from the positioning posts 108 and threadedly connected to the positioning platform 103, located on the side of the positioning posts 108 closest to the positioning platform 103. The positioning posts 108 have through stepped holes from top to bottom, and the positioning platform 103 has threaded mounting holes to facilitate the fixing of the positioning posts 108 to the positioning platform 103 by the fastening bolts 109.

[0026] Finally, the top of the positioning pin 106 is provided with a mating threaded hole. The purpose of providing a mating threaded hole on the top of the positioning pin 106 is to allow the threaded pin to be directly installed on the top of the positioning pin 106, and finally the positioning pin 106 can be quickly pulled out by a pin puller.

[0027] When using this invention to effectively improve the processing quality of spokes in precision turning of wheel hubs, the wheel hub is first slid vertically downwards onto the stepped mandrel 104. The dimensions and structure of the stepped mandrel 104 are directly set according to the inner hole of the wheel hub, thereby achieving a stable contact fit. When placed, the six positioning holes on the bottom of the wheel hub will slide directly into the positioning post 108 for initial positioning and anti-rotation. Then, the T-shaped screw 105 is installed for clamping. At this time, with the cooperation of the positioning table 103, the workpiece can be stably limited. Finally, turning can be performed through a vertical turning center. During processing, the center hole of the wheel hub is subjected to radial force by the stepped mandrel 104. The processing surface is subjected to uniform force during processing, and the surface finish of the wheel hub after processing is more uniform, thus improving the product quality. Therefore, it is possible to effectively improve the processing quality of spokes in precision turning of wheel hubs.

[0028] Example 2:

[0029] like Figure 3 As shown, where Figure 3This is a schematic diagram of the overall structure of a wheel hub spoke machining fixture. Based on the first embodiment, this utility model provides a wheel hub spoke machining fixture, wherein the outer surface of the stepped mandrel 104 is coated with a wear-resistant coating 201.

[0030] In this embodiment, by spraying the wear-resistant coating 201 onto the outer surface of the stepped mandrel 104, the service life of the stepped mandrel 104 can be improved, the replacement time can be extended, and the cost of use can be reduced.

[0031] Finally, a motorcycle boss-type spoked wheel hub can be machined by fixing the spokes with a wheel hub precision machining fixture.

[0032] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A tooling for precision machining spokes on a wheel hub, comprising a base plate, characterized in that, It also includes auxiliary devices; The auxiliary device includes a positioning plate, a positioning platform, a stepped mandrel, a T-shaped screw, a fastening assembly, and an anti-rotation assembly. The positioning plate is detachably connected to the base plate and is located on the base plate. The positioning platform is integrally formed with the positioning plate and is located on top of the positioning plate. The stepped mandrel is fixedly connected to the positioning platform and is located on top of the positioning platform. The T-shaped screw is threadedly connected to the stepped mandrel and is located on top of the stepped mandrel. The fastening assembly is located on the side of the positioning plate near the base plate, and the anti-rotation assembly is located on the positioning platform.

2. The wheel hub precision machining spoke tooling as described in claim 1, characterized in that, The fastening assembly includes a positioning pin and a locking bolt. The positioning pin is slidably connected to the base plate and the positioning plate respectively, and passes through the positioning plate. The locking bolt is detachably connected to the positioning plate and threadedly connected to the base plate, and is located on the side of the positioning plate closer to the base plate.

3. The wheel hub precision machining spoke tooling as described in claim 1, characterized in that, The anti-rotation component includes positioning posts and fastening bolts. The positioning posts are detachably connected to the positioning platform and are evenly spaced in a ring on the positioning platform. There are six positioning posts in total. The fastening bolts are detachably connected to the positioning posts and are threadedly connected to the positioning platform. They are located on the side of the positioning posts closer to the positioning platform.

4. The wheel hub precision machining spoke tooling as described in claim 2, characterized in that, The locating pin has a mating threaded hole at its top.

5. The wheel hub precision machining spoke tooling as described in claim 1, characterized in that, The outer surface of the stepped mandrel is coated with a wear-resistant coating.

6. A motorcycle hub with a raised spoke design, characterized in that, The spokes can be fixed by the wheel hub precision machining fixture as described in any one of claims 1 to 5 and then machined.

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