A hub spoke hole processing positioning structure

Abstract

The utility model relates to vehicle parts processing equipment technical field, concretely relates to a wheel hub spoke hole processing positioning structure. In the utility model, through setting up rotatory disc that can rotate on horizontal plane on base, setting up horizontal rotatory electric cylinder on rotatory disc, setting up clamping jaw on the rotatory end of horizontal electric cylinder. When using, the wheel hub face and punch tool that should be perpendicular to each other change through the rotation of rotatory disc, make punch tool oblique and drill to wheel hub, thereby increase the length of wheel hub spoke hole, further make the contact area of wheel hub spoke and wheel hub spoke hole become big, increased the reliability of contact surface, simultaneously do not change wheel hub manufacturing cost or increase the weight of motorcycle.

Description

Technical Field

[0001] This utility model relates to the field of vehicle parts processing equipment technology, specifically to a positioning structure for machining spoke holes in a wheel hub. Background Technology

[0002] In the motorcycle manufacturing industry, wheel hub production is a crucial step. Motorcycle wheels include those with detachable spokes and those with non-detachable spokes. Non-detachable spoke wheels are typically manufactured as a single piece through casting, while detachable spoke wheels are assembled from three parts: the outer hub, the spokes, and the inner hub. Manufacturing detachable spoke wheels requires drilling holes in the hub area.

[0003] Currently, the drilling direction for spoke holes on wheel hubs is perpendicular to the drilling surface, minimizing the spoke hole length. After drilling, spokes are passed through the spoke holes to connect the outer and inner hubs, forming the complete motorcycle wheel hub. The spokes ultimately support most of the motorcycle's weight. However, due to the thin material of motorcycle wheels, the contact area between the spokes and the spoke holes is small, resulting in high pressure. This makes the spoke holes prone to deformation under heavy loads on bumpy roads, potentially damaging the wheel hub. For example, the spoke hole processing device disclosed in patent publication number "CN205703365U" ("Motorcycle Wheel Hub Spoke Hole Processing Fixture") directly drills holes perpendicular to the drilling surface. While this method is convenient and fast, it produces wheels with the aforementioned defects. To address the aforementioned shortcomings, increasing the wheel hub thickness could increase the contact area between the hub spokes and the spoke holes. However, increasing the hub thickness would increase manufacturing costs and motorcycle weight, which is not the optimal approach. Inspired by this, however, a drilling device with a certain angle between the drilling direction and the drilling surface could be developed. This angled drilling would lengthen the spoke holes, increasing the contact area between the hub spokes and the spoke holes, thus improving the reliability of the contact surface. Utility Model Content

[0004] To address the shortcomings of the existing technology, the purpose of this utility model is to provide a wheel hub spoke hole processing and positioning structure. By drilling at an angle to increase the length of the wheel hub spoke hole, the contact area between the wheel hub spoke and the wheel hub spoke hole can be increased, thereby increasing the reliability of the contact surface.

[0005] This utility model discloses a positioning structure for machining spoke holes in a wheel hub through an embodiment, including a base, a rotating disk and a rotary motor mounted on the base, a support device vertically mounted on the rotating disk, a rotary electric cylinder with its rotating shaft horizontally mounted on the support device, and a gripper mounted on the rotating end of the rotary electric cylinder; the rotary motor is used to drive the rotating disk to rotate; the gripper includes a positioning disk and several limiting blocks, the center of the positioning disk coincides with the rotating shaft of the rotary electric cylinder, and the limiting blocks are distributed symmetrically on the positioning disk with the center of the positioning disk as the center.

[0006] Furthermore, the rotating disk is fixed to the base by a turntable bearing, and a rack is provided on the outer side of the rotating disk. The rotating motor meshes with the rack through a transmission gear.

[0007] Furthermore, the rotary motor includes a servo motor or a stepper motor with a locking function.

[0008] Furthermore, the gripper also includes several telescopic devices, which are distributed symmetrically on the positioning disk with the center of the positioning disk as the center, and the extension line of the telescopic direction passes through the center of the positioning disk; the limiting block is fixed on the telescopic end of the telescopic device.

[0009] Furthermore, the telescopic device includes a cylinder, a hydraulic rod, or an electric cylinder.

[0010] Furthermore, the support device includes an electric cylinder or a fixed support plate.

[0011] Beneficial Effects: This utility model provides a positioning structure for machining spoke holes in a wheel hub. A rotating disk rotatable on a horizontal plane is mounted on a base, a horizontal rotary cylinder is mounted on the rotating disk, and a gripper is mounted on the rotating end of the cylinder. In use, the wheel hub surface and the drilling tool, which should be perpendicular, are altered by the rotation of the rotating disk. This causes the drilling tool to drill at an angle towards the wheel hub, increasing the length of the spoke holes and further enlarging the contact area between the spokes and the spoke holes. This increases the reliability of the contact surface without changing the manufacturing cost of the wheel hub or increasing the weight of the motorcycle.

[0012] 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

[0013] Figure 1 This is a front view of a hub spoke hole machining positioning structure according to an embodiment of the present invention;

[0014] Figure 2 This is a top view of a wheel hub spoke hole machining positioning structure according to an embodiment of the present invention;

[0015] Figure 3 This is a right view of a wheel hub spoke hole machining positioning structure according to an embodiment of the present invention;

[0016] The markings in the diagram are: 1-base, 11-rotating disc, 12-rotating motor, 13-disc bearing, 14-rack, 15-transmission gear, 2-support device, 3-rotating electric cylinder, 4-gripper, 41-positioning disc, 42-limiting block, 43-telescopic device. Detailed Implementation

[0017] 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.

[0018] like Figure 1-3 As shown in the figure, this utility model embodiment discloses a positioning structure for machining spoke holes in a wheel hub, including a base 1, a rotating disk 11 and a rotary motor 12 mounted on the base 1, a support device 2 vertically mounted on the rotating disk 12, a rotary electric cylinder 3 with its rotating shaft horizontally mounted on the support device, and a gripper 4 mounted on the rotating end of the rotary electric cylinder 3. The rotary motor 12 drives the rotating disk 11 to rotate. The gripper 4 includes a positioning disk 41 and several limiting blocks 42. The center of the positioning disk 41 coincides with the rotating shaft of the rotary electric cylinder 3, and the limiting blocks 42 are distributed on the positioning disk 41 with the center of the positioning disk 41 as the center of symmetry. This device constructs a three-dimensionally adjustable (rotation around a vertical axis + swing around a horizontal axis + radial clamping) composite positioning system, which can flexibly adapt to the machining requirements of spoke holes in different models of wheel hubs, improving the versatility and automation of machining.

[0019] In this embodiment, the rotating disk 11 is rotatably fixed to the base via a turntable bearing 13. A rack 14 is provided on the outer side of the rotating disk 11, and the rotating motor 12 meshes with the rack 14 via a transmission gear 15. The turntable bearing 13 provides high load-bearing capacity and smooth rotation; the rack-gear transmission structure has high transmission accuracy, fast response, and long service life, which facilitates precise indexing of the hub circumferential angle and meets the machining requirements of spoke holes with different tilt angles.

[0020] In this embodiment, the rotary motor 12 includes a servo motor with a locking function, which can automatically lock after completing the angle positioning to prevent position deviation caused by vibration or external force during the processing, thereby improving processing stability and safety, and supporting high-precision closed-loop control.

[0021] like Figure 3 As shown in the diagram, in this embodiment, the gripper 4 further includes several telescopic devices 43. These telescopic devices 43 are symmetrically distributed on the positioning disk 41 with the center of the positioning disk 41 as the center, and the extension line of the telescopic direction passes through the center of the positioning disk 41. A limiting block 42 is fixed to the telescopic end of the telescopic device 43. The symmetrical layout ensures uniform distribution of clamping force, preventing wheel hub deformation. The positioning disk serves as a reference surface, and the limiting block provides radial limiting, jointly ensuring high coaxiality of the wheel hub installation and improving the machining accuracy of the holes. Simultaneously, the limiting block fixed by the telescopic device is compatible with wheel hub center holes of different inner diameters, expanding the applicability of the equipment. Radial synchronous telescopic extension ensures automatic centering during the clamping process, reducing manual adjustment time and improving clamping efficiency and repeatability.

[0022] In this embodiment, the telescopic device 43 is an electric cylinder. Electric cylinders are particularly suitable for high-precision, programmable control scenarios.

[0023] In this embodiment, the support device 2 adopts a fixed support plate, which has a simple structure, high rigidity, is suitable for standardized products, and takes into account both flexibility and stability.

[0024] Working principle: When using this device, the wheel hub to be processed is placed on the positioning disc 41 of the gripper 4, with its center hole roughly aligned with the center of the positioning disc 41; the telescopic device 43 is activated to drive the limiting block 42 to retract radially and synchronously, clamping the inner wall of the center hole of the wheel hub, achieving automatic centering and stable clamping; the rotating disc 11 is driven by the rotary motor 12 to rotate the wheel hub precisely around the vertical axis to the required spoke hole processing angle, and the position is automatically locked by the locking function of the motor; under the stable clamping of the gripper 4 and the precise angle positioning, the spoke holes of the wheel hub are processed by external processing equipment; after processing one hole, the rotary electric cylinder 3 is activated to rotate a certain angle before processing the next hole; after processing all the spoke holes on the entire wheel hub, the telescopic device 43 retracts, the limiting block 42 is released, the wheel hub is removed, and the next cycle begins. This wheel hub spoke hole machining positioning structure integrates high-precision angle indexing, automatic centering and clamping, multi-degree-of-freedom adjustment and reliable locking functions, which significantly improves the positioning accuracy, production efficiency and equipment versatility of wheel hub spoke hole machining. It is suitable for automated production lines, reduces manual intervention and ensures consistent product quality.

[0025] 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.

[0026] 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 spoke holes in a wheel hub, characterized in that: The device includes a base, a rotating disk and a rotary motor mounted on the base, a support device vertically mounted on the rotating disk, a rotary electric cylinder with its rotating shaft horizontally mounted on the support device, and grippers mounted on the rotating end of the rotary electric cylinder. The rotary motor drives the rotating disk to rotate. The grippers include a positioning disk and several limiting blocks. The center of the positioning disk coincides with the rotating shaft of the rotary electric cylinder, and the limiting blocks are distributed on the positioning disk with the center of the positioning disk as the center of symmetry.

2. The hub spoke hole machining positioning structure according to claim 1, characterized in that: The rotating disk is rotatably fixed on the base via a turntable bearing. A rack is provided on the outer side of the rotating disk, and the rotating motor meshes with the rack via a transmission gear.

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

4. The hub spoke hole machining positioning structure according to claim 1, characterized in that: The gripper also includes several telescopic devices, which are distributed on the positioning disk with the center of the positioning disk as the center of symmetry, and the extension line of the telescopic direction passes through the center of the positioning disk; the limiting block is fixed on the telescopic end of the telescopic device.

5. The hub spoke hole machining positioning structure according to claim 4, characterized in that: The telescopic device includes a cylinder, a hydraulic rod, or an electric cylinder.

6. The hub spoke hole machining positioning structure according to claim 1, characterized in that: The support device includes an electric cylinder or a fixed support plate.

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