Monocrystal diamond tool processing method and monocrystal diamond tool

Abstract

The invention discloses a monocrystal diamond tool processing method and a monocrystal diamond tool. The monocrystal diamond tool processing method includes the following steps that firstly, a monocrystal diamond material is prepared; secondly, a hard alloy matrix end is processed so that positioning and welding of the monocrystal diamond material can be convenient; thirdly, the monocrystal diamond material is welded to the hard alloy matrix end, and the monocrystal diamond tool is formed; fourthly, according to the appearance and contour design requirement of the tool, a laser cutting method is adopted for processing the monocrystal diamond tool; and fifthly, a thermo-chemical polishing method is adopted for grinding a tool cutting edge of the monocrystal diamond tool. According to the monocrystal diamond tool processing method, the monocrystal diamond tool is processed through laser, and surface impacting groove marks caused by a machining method are avoided; the thermo-chemical polishing method is used for grinding the tool cutting edge of the monocrystal diamond tool, and the high-quality tool cutting edge can be obtained easily in a grinding manner; and during laser processing, the surface of the monocrystal diamond tool is coated with a coating, transmission and reflection of the laser are effectively prevented, and the processing efficiency and quality of the tool are improved.

Description

technical field [0001] The invention belongs to the field of superhard material processing, and in particular relates to a single crystal diamond tool processing method and a single crystal diamond tool. Background technique [0002] Diamond is a crystal of a single carbon atom, and its crystal structure has the highest density of equiaxed face-centered cubic crystals. The bond between carbon atoms in diamond crystals is SP 3 Hybrid covalent bonds have strong binding force, stability and directionality. The unique crystal structure of diamond makes it have the highest hardness, rigidity, refractive index and thermal conductivity in nature, as well as extremely high wear resistance and chemical stability. [0003] The excellent characteristics of single crystal diamond can meet most of the requirements of precision and ultra-precision cutting tool materials, and it is an ideal precision cutting tool material. The uniform crystal structure of diamond without internal grain ...

AI Technical Summary

Problems solved by technology

[0004] When the traditional mechanical grinding method is used to manufacture diamond tools, due to the high grinding line speed and high local pressure, the impact on the surface and cutting edge of the tool is severe, which will inevitably lead to micro grooves and thicker processing deterioration layer on the surface of the tool, and The blade sawtooth is relatively large, which limits the further improvement of the quality of the tool. With the continuous development of ultra-precision machining technology and the continuous improvement of machining accuracy, the precision and quality requirements of diamond tools are also more stringent, and the thickness of the metamorphic layer on the surface of the tool will increase. It directly affects the life of the tool and the processing quality of the parts. Therefore, the development of a new diamond tool processing method is undoubtedly the best way to break through the limitation of the mechanical grinding method on the quality of the tool.

[0005] In addition, due to the relatively high size and precision requirements of diamond forming tools, the traditional mechanical grinding method not only has very high processing costs, but also has low processing accuracy and often does not meet the requirements. Therefore, it is also urgent to develop new diamond tool processing methods

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