A pcd tool for machining wheel bolt holes

By combining PCD material with alloy steel in the tool design, the problems of insufficient rigidity and lifespan in wheel bolt hole machining were solved, achieving efficient and low-cost machining results.

CN224333455UActive Publication Date: 2026-06-09CITIC DICASTAL CO LTD +1

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CITIC DICASTAL CO LTD
Filing Date
2025-08-12
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

The existing wheel bolt hole machining tools have insufficient rigidity and lifespan, making it impossible to reliably guarantee the installation dimensions and appearance quality of the bolt holes.

Method used

The tool head and base insert are made of PCD material, combined with the tool holder and tool head made of low-cost alloy steel, and formed into a single structure through welding. The inverted conical chip groove is designed to improve machining capacity and service life.

Benefits of technology

It achieves high-performance wheel bolt hole machining, reduces costs, improves machining efficiency, and has a simple structure that is easy to promote.

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Abstract

This utility model belongs to the field of wheel machining, specifically relating to a PCD tool for machining wheel bolt holes, including a tool holder, a tool head, and a cemented carbide substrate; the tool holder and tool head are integrally formed of alloy, and the cemented carbide substrate is welded to the tool head; both the tool head and the cemented carbide substrate are provided with PCD material inserts. Chip grooves are formed on the cemented carbide substrate through grinding, and the tool head has an inverted conical design with chip removal grooves. This utility model achieves high-performance PCD material machining through the combination of low-cost alloy steel and PCD material. It ensures the tool's machining capability and lifespan, effectively reduces machining costs, and improves machining efficiency. It also features a simple structure and is easy to promote.
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Description

Technical Field

[0001] This utility model belongs to the field of wheel processing, and specifically relates to a PCD tool for processing wheel bolt holes. Background Technology

[0002] As a crucial component of automobiles, wheels require increasingly higher dimensional precision in their machining. The bolt holes are a critical assembly point, and the accuracy of their dimensions is essential for ensuring vehicle safety. Traditional machining of bolt holes utilizes low-cost welding tools, which have low tool rigidity and limited machining life, making it impossible to consistently guarantee the dimensional and aesthetic quality of the bolt hole installation. Utility Model Content

[0003] This invention proposes a PCD tool for machining wheel bolt holes to solve the problems of low tool rigidity and low machining life in the prior art.

[0004] To achieve the above objectives, the present invention proposes the following technical solution:

[0005] A PCD tool for machining wheel bolt holes includes a tool holder, a tool head, and a cemented carbide substrate;

[0006] The handle and the blade are made of a single alloy, and the cemented carbide substrate is welded to the blade.

[0007] The cutting head is provided with a cutting head blade, and the cemented carbide substrate is provided with a substrate blade;

[0008] The cutting head blade and the base blade are made of PCD material.

[0009] Preferably, the cemented carbide substrate has a chip groove formed by grinding.

[0010] Preferably, the cutter head has an inverted conical design and a chip removal groove on it.

[0011] The advantages of this utility model are:

[0012] This paper proposes a PCD (Polycarbonate Die) tool for machining wheel bolt holes. By combining low-cost alloy steel with PCD material, high-performance PCD machining is achieved. This ensures the tool's machining capability and lifespan, effectively reducing machining costs and improving machining efficiency. It also features a simple structure and is easy to implement. Attached Figure Description

[0013] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments and descriptions of this utility model are used to explain this utility model and do not constitute an undue limitation thereof. In the drawings:

[0014] Figure 1A schematic diagram of a PCD tool for machining wheel bolt holes;

[0015] Figure 2 This is a schematic diagram of a cemented carbide substrate;

[0016] Figure 3 This is a schematic diagram of the cutter head;

[0017] Figure 4 This is a schematic diagram of a PCD tool used for machining wheel bolt holes. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0019] The following detailed description is exemplary and intended to provide further detailed explanation of the present invention. Unless otherwise specified, all technical terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this invention.

[0020] Please see Figure 1 As shown, this utility model provides a PCD tool for machining wheel bolt holes, including a tool holder 101, a tool head 201, and a cemented carbide substrate 601.

[0021] The handle 101 and the cutter head 201 are made of integral alloy steel, and the cemented carbide substrate 601 is welded onto the cutter head 201.

[0022] like Figure 2 , 3 As shown, the cutting head 201 is provided with a pair of cutting head blades 401, and the cemented carbide substrate 601 is provided with a pair of substrate blades 501. The cutting head blades 401 and the substrate blades 501 are made of PCD material.

[0023] The cutter head 201 has an inverted conical design and a chip removal groove 301 is provided on the cutter head 201.

[0024] The cemented carbide substrate 601 has a melt groove 701.

[0025] In one specific embodiment, a chip groove 701 is formed on the cemented carbide substrate 601 by grinding.

[0026] In one specific embodiment, the cutting head 201 is provided with a cutting head positioning groove 202, and the cutting head blade 401 is disposed on the cutting head positioning groove 202; the cemented carbide substrate 601 is provided with a substrate positioning groove 602, and the substrate blade 501 is disposed on the substrate positioning groove 602.

[0027] This invention achieves the combination of low-cost alloy steel and PCD material through material combination, enabling the machining of high-performance PCD material. This ensures the machining capability and lifespan of the cutting tool, effectively reducing machining costs and improving machining efficiency. It also features a simple structure and is easy to promote. Example

[0028] In this embodiment, the PCD tool for machining wheel bolt holes includes a tool holder 101 and a tool head 201 made of integral alloy steel. The tool holder 101, the tool head 201, and the cemented carbide substrate 601 are axially connected. The cutting insert 401 is installed in the tool head 201 by welding. The cemented carbide substrate 601 is pre-embedded in the tool body of the tool head 201 by welding. The substrate cutting insert 501 is installed in the cemented carbide substrate 601 by welding.

[0029] During operation, the wheel is clamped onto a CNC machine tool using a fixture. The motor drives the machine spindle to rotate, causing the wheel to turn counter-clockwise at a certain speed. The cutting tool is mounted on the turret, and a pre-programmed machining program processes the wheel bolt holes at a specific feed rate. Figure 4 As shown.

[0030] As is known from common technical knowledge, this utility model can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not the only ones. All modifications within the scope of this utility model or its equivalents are included in this utility model.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of this utility model. Any modifications or equivalent substitutions that do not depart from the spirit and scope of this utility model should be covered within the protection scope of the claims of this utility model.

Claims

1. A PCD cutting tool for machining wheel bolt holes, characterized in that, Includes the handle, the cutting tip, and the carbide substrate; The handle and the blade are made of a single alloy, and the cemented carbide substrate is welded to the blade. The cutting head is provided with a cutting head blade, and the cemented carbide substrate is provided with a substrate blade; The cutting head blade and the base blade are made of PCD material.

2. The PCD tool for machining wheel bolt holes as described in claim 1, characterized in that, Chip grooves are formed on the cemented carbide substrate by grinding.

3. The PCD tool for machining wheel bolt holes as described in claim 1, characterized in that, The cutter head has an inverted conical design and a chip removal groove on its surface.