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A kind of processing method of cubic boron nitride cutting tool

A technology of cubic boron nitride and processing method, applied in the field of tool processing, can solve the problems of solder overflowing on the substrate, difficult to ensure consistency, poor firmness, etc., and achieve the effect of small change in strength, accurate precision, and increased firmness.

Active Publication Date: 2022-01-21
深圳市鑫金泉精密技术有限公司
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Problems solved by technology

[0005] The purpose of the present invention is to provide a processing method for cubic boron nitride cutting tools, which is used to solve the problem that the existing cubic boron nitride cutting tools adopt high-frequency welding, which easily causes solder to overflow on the substrate, which is difficult to ensure consistency and poor firmness. The problem of difficult displacement and poor firmness by vacuum welding

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  • A kind of processing method of cubic boron nitride cutting tool
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  • A kind of processing method of cubic boron nitride cutting tool

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Embodiment Construction

[0038] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0039] Please refer to the attached figure 1 , a method for processing a cubic boron nitride cutting tool in an embodiment of the present invention.

[0040] The processing method of the cubic boron nitride cutter comprises the steps:

[0041] A. Pretreat the tool substrate and the polycrystalline cubic boron nitride sheet, wherein the diameter of the polycrystalline cubic boron nitride sheet is 2-8mm, and the material of the tool substrate is tungsten with a cobalt content of 6%-8%. steel material.

[0042] B, adopt bamboo chip to evenly coat the silver flux on the welding surface of the tool substrate, and place the polycrystalline cubic boron nitride sheet on the flux; wherein, the smearing area of ​​the flux is smaller than the welding surface of the tool substrate;

[0043] C. Gently press the polycrystalline cubic boron nitride sheet to make th...

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Abstract

The invention provides a processing method of a cubic boron nitride cutting tool, comprising the steps of: pretreating a cutting tool substrate and a polycrystalline cubic boron nitride sheet, wherein the diameter of the polycrystalline cubic boron nitride sheet is 2 ‑8mm, the material of the tool base is tungsten steel with a cobalt content of 6%‑8%; the silver solder is evenly coated on the welding surface of the tool base with bamboo sheets, and the polycrystalline cubic boron nitride sheet is placed on the flux; wherein, the smearing area of ​​the flux is smaller than the welding surface of the tool base; press the polycrystalline cubic boron nitride sheet, and move the polycrystalline cubic boron nitride sheet with a bamboo sheet, and the polycrystalline cubic boron nitride sheet The concentricity error between the material and the tool base is kept within 0.02mm to form an intermediate, and then baked; the baked intermediate is put into a vacuum welding machine for welding to form a cubic boron nitride tool. In this way, the accuracy of the cubic boron nitride tool can be improved, and the firmness of the polycrystalline cubic boron nitride sheet and the tool matrix can be increased.

Description

【Technical field】 [0001] The invention relates to a cutting tool processing method, in particular to a processing method of a cubic boron nitride cutting tool. 【Background technique】 [0002] Cubic boron nitride (CBN) is a pure synthetic material, another new type of superhard material synthesized by high temperature and ultrahigh pressure equipment, its hardness is second only to artificial diamond. Among them, the cubic boron nitride cutting tool is sintered by cubic boron nitride micropowder and a small amount of binder. Its heat resistance can reach 1400-1500 ℃, and it has strong wear resistance and corrosion resistance. Ferrous metals and their alloys. The use of cubic boron nitride cutting tools can greatly reduce tool wear and tool change times, thereby improving efficiency and reducing costs. [0003] At present, the existing cubic boron nitride cutting tools are generally made of polycrystalline cubic boron nitride sheet (PCBN sheet ) It is formed by flux welding...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K1/00B23K1/20
CPCB23K1/0008B23K1/20B23K1/203
Inventor 陈朋跃窦明乾陈德炯
Owner 深圳市鑫金泉精密技术有限公司
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