A positioning structure for machining an inner hole of a wheel hub

Abstract

The utility model relates to vehicle parts processing equipment technical field, concretely relates to a wheel hub inner hole processing positioning structure, in the base of setting up with the fixed platform transmission connection's rotating electrical machine, makes fixed platform still rotatable after fixing wheel hub, plays the rotatable processing wheel hub's function. Meanwhile, the fixed circular platform central arrangement has the positioning protrusion, and the positioning protrusion is movably connected with the fixed circular platform, and the positioning protrusion includes several different sizes positioning protrusions, still be provided with several fixed clamps on the fixed circular platform. When using, can replace different wheel hub according to the size difference of wheel hub inner hole, makes this positioning structure to be able to be applicable to more model wheel hub inner hole processing demand, improves the applicability.

Description

Technical Field

[0001] This utility model relates to the technical field of vehicle parts processing equipment, specifically to a positioning structure for machining the inner hole of a wheel hub. Background Technology

[0002] In the automotive manufacturing industry, wheel hub production is a crucial step. The wheel hub is the metal component that supports the tire's inner diameter. Wheel hubs are generally quite heavy and come in various sizes. The manufacturing process involves different machining techniques, including cutting, welding, drilling, and grinding. Each machining step requires positioning the wheel hub. However, existing positioning devices have a single positioning direction and cannot rotate arbitrarily, failing to meet the rotational machining requirements of the perfectly circular wheel hub. Furthermore, existing positioning devices are limited in size, primarily designed for wheel hubs of the same model, and can only fix the inner bore of a single size, not accommodate the machining needs of multiple wheel models. Therefore, it is necessary to design a positioning device that can adapt to the rotational machining characteristics of wheel hubs and simultaneously accommodate the positioning structure for machining the inner bore of wheel hubs of different sizes. Utility Model Content

[0003] To address the shortcomings of the existing technology, the present invention aims to provide a positioning structure for machining the inner hole of a wheel hub. By setting a rotatable fixed platform and replaceable positioning protrusions, the structure enables the wheel hub to be rotated for machining and is applicable to the machining needs of inner holes of more wheel hub models.

[0004] This utility model discloses a positioning structure for machining the inner hole of a wheel hub through an embodiment, including a base and a fixed truncated cone mounted on the base. The fixed truncated cone is mounted on the base via a turntable bearing; a rotary motor is mounted on the base, and a rack is provided on the side surface of the fixed truncated cone. The rotary motor is connected to the fixed truncated cone via gears and the rack; a positioning protrusion is provided in the center of the fixed truncated cone, and the positioning protrusion includes several positioning protrusions of different sizes; several fixing clamps are also provided on the fixed truncated cone.

[0005] Furthermore, rotary motors include servo motors or stepper motors with locking functions. Servo motors offer higher precision and are suitable for machining hubs with high precision requirements; stepper motors have slightly lower precision than servo motors but are less expensive. The choice can be made based on specific needs.

[0006] Furthermore, a permanent magnet is fixedly installed on the fixed circular platform, and the positioning protrusion is made of magnetic material. The positioning protrusion is fixed to the fixed circular platform by the permanent magnet.

[0007] Furthermore, the permanent magnet is prism-shaped, and the positioning protrusion is provided with a groove that matches the permanent magnet. The positioning protrusion is fixedly connected to the permanent magnet through the groove.

[0008] Furthermore, the fixing clamp includes a telescopic device and a limiting block fixed on the telescopic end of the telescopic device; one end of the limiting block is fixedly connected to the telescopic end of the telescopic device, and the other end points to the center of the positioning protrusion.

[0009] Furthermore, the telescopic device includes a rotary electric cylinder, the fixed end of which is fixed on a fixed circular platform, and a limit block is fixedly installed on the telescopic end of the rotary electric cylinder.

[0010] Beneficial effects: The positioning structure for machining the inner hole of a wheel hub provided by this utility model has a rotary motor installed on the base to drive the fixed table to rotate after the wheel hub is fixed, so as to make the wheel hub rotatable for machining. At the same time, the positioning protrusion used to position the wheel hub being machined is movably connected to the fixed table. Different wheel hubs can be replaced according to the size of the inner hole of the wheel hub, so that this positioning structure can be applied to the machining needs of more models of wheel hub inner holes.

[0011] It should be noted that the terms "first," "second," "left," "right," and similar terms used in this article are merely for describing the constituent elements of the technical solution and do not constitute a limitation on the technical solution, nor should they be interpreted as an indication or implication of the importance of the corresponding elements; elements with terms such as "first," "second," "left," "right," etc., indicate that the corresponding technical solution contains at least one of these elements. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the positioning structure for machining the inner hole of the wheel hub in an embodiment of this utility model;

[0013] The markings in the diagram are: 1-base, 2-positioning frustum, 21-rack, 22-permanent magnet, 3-turntable bearing, 4-rotary motor, 41-gear, 5-positioning protrusion, 51-groove, 6-fixing clamp, 61-telescopic device, 62-limiting block. Detailed Implementation

[0014] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Of course, the specific embodiments described below are only for explaining the technical solutions of the present invention, and not for limiting the present invention. Furthermore, the parts described in the embodiments or drawings are merely illustrative examples of relevant parts of the present invention, and not the entirety of the present invention. At the same time, all other embodiments obtained by those skilled in the art based on the embodiments of the present invention should naturally fall within the protection scope of the present invention.

[0015] like Figure 1As shown in the figure, the hub inner hole machining positioning structure disclosed in this utility model embodiment includes a base 1 and a fixed truncated cone 2 mounted on the base 1. The fixed truncated cone 2 is mounted on the base 1 via a turntable bearing 3; a rotary motor 4 is mounted on the base 1, and a rack 21 is mounted on the side surface of the fixed truncated cone 2. The rotary motor 4 is connected to the fixed truncated cone 2 via a gear 41 and the rack 21; a positioning protrusion 5 is provided in the center of the fixed truncated cone 2, and the positioning protrusion 5 is movably connected to the fixed truncated cone 2; two fixing clamps 6 are also provided on the fixed truncated cone 2.

[0016] In this embodiment, the rotary motor 4 includes a servo motor with a locking function. The servo motor has higher precision and can be used for wheel hubs with high machining precision requirements.

[0017] In this embodiment, a permanent magnet 22 is also fixedly disposed on the fixed truncated cone 2, and the positioning protrusion 5 is made of magnetic material. The positioning protrusion 5 is fixed to the fixed truncated cone 2 by the permanent magnet 22. The magnet has the advantages of being simple to use, but also being able to provide good positioning and flexible fixation of the positioning protrusion 5.

[0018] In this embodiment, the permanent magnet 22 is prism-shaped, and the positioning protrusion 5 is provided with a groove 51 that matches the permanent magnet 22. The positioning protrusion 5 is fixedly connected to the permanent magnet 22 through the groove 51. The prism-shaped permanent magnet 22 can prevent the fixed frustum 2 and the positioning protrusion 5 from rotating relative to each other.

[0019] In this embodiment, the fixing clamp 6 includes a telescopic device 61 and a limiting block 62 fixed on the telescopic end of the telescopic device 61; one end of the limiting block 62 is fixedly connected to the telescopic end of the telescopic device 61, and the other end points to the center of the positioning protrusion 5.

[0020] In this embodiment, the telescopic device 61 is a rotary electric cylinder. The fixed end of the rotary electric cylinder is fixed on the fixed truncated cone 2, and a limiting block 62 is fixedly provided at the telescopic end of the rotary electric cylinder.

[0021] Working principle: When using this device, select a positioning protrusion 5 of appropriate size according to the size of the inner hole of the wheel hub to be processed, and then fix it on the fixed truncated cone 2 by permanent magnet 22; align the inner hole of the wheel hub to be processed with the positioning protrusion 5 and put the wheel hub over the positioning protrusion 5, then control the telescopic device 61, which is a fixed clamp 6, to retract, so that the limiting block 62 fixes the wheel hub; then use a cutting tool to process the wheel hub. When it is necessary to process the wheel hub from different directions, control the rotary motor 4 to rotate, so as to drive the fixed truncated cone 2 to rotate and change the processing angle.

[0022] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] It should be noted that the above embodiments are only for more clearly illustrating the technical solution of this utility model. Those skilled in the art will understand that the implementation of this utility model is not limited to the above content. Any obvious changes, substitutions or replacements made based on the above content do not exceed the scope of the technical solution of this utility model. Other implementations will also fall within the scope of this utility model without departing from the concept of this utility model.

Claims

1. A positioning structure for machining the inner hole of a wheel hub, comprising a base and a fixed frustum mounted on the base, characterized in that: The fixed truncated cone is mounted on the base via a turntable bearing; a rotary motor is mounted on the base, and a rack is mounted on the side surface of the fixed truncated cone. The rotary motor is connected to the fixed truncated cone via gears and the rack; a positioning protrusion is mounted in the center of the fixed truncated cone, and the positioning protrusion is movably connected to the fixed truncated cone. The positioning protrusion includes several positioning protrusions of different sizes; several fixing clamps are also mounted on the fixed truncated cone.

2. The hub inner hole machining positioning structure according to claim 1, characterized in that: The rotary motor includes a servo motor or a stepper motor with a locking function.

3. The hub inner hole machining positioning structure according to claim 1, characterized in that: A permanent magnet is also fixedly mounted on the fixed circular platform. The positioning protrusion is made of magnetic material and is fixed on the fixed circular platform by the permanent magnet.

4. The hub inner hole machining positioning structure according to claim 3, characterized in that: The permanent magnet is prism-shaped, and the positioning protrusion is provided with a groove that matches the permanent magnet. The positioning protrusion is fixedly connected to the permanent magnet through the groove.

5. The hub inner hole machining positioning structure according to claim 1, characterized in that: The fixing clamp includes a telescopic device and a limiting block fixed on the telescopic end of the telescopic device; one end of the limiting block is fixedly connected to the telescopic end of the telescopic device, and the other end points to the center of the positioning protrusion.

6. The hub inner hole machining positioning structure according to claim 5, characterized in that: The telescopic device includes a rotary electric cylinder, the fixed end of which is fixed to the fixed circular platform, and the telescopic end of which is fixedly provided with the limiting block.

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