Method for confirming grinding crystal orientation of diamond

Abstract

The invention relates to a method for conforming grinding crystal orientation of a diamond, belonging to the technical field of ultra-precise machining. The method comprises the steps of (1) grinding a single crystal diamond so as to obtain an abrasive surface, wherein the abrasive surface and a crystal face to be ground intersect so as to form a ridge; (2) measuring the index of the crystal surface of the obtained abrasive surface; (3) measuring the index of the crystal surface of the surface to be ground; (4) measuring the included angle between a groove left in the surface to be processed due to processing and the ridge formed in step (1); (5) calculating according to the data measured from step (2) to step (4) so as to obtain the specific crystal orientation index or direction in the grinding direction. According to the method, the abrasive surface provided in advance and the surface to be ground form the ridge which is taken as the reference crystal orientation, in subsequent abrasive machining, characterization parameters of the specific grinding direction can be measured by a laser scanning confocal microscope only by marking initial crystal orientation on the crystal surface, and the space placing position and placing gesture of the diamond workpiece do not need to be recorded, so that the method is convenient and rapid.

Description

technical field [0001] The invention belongs to the technical field of ultra-precision machining, and relates to a method for determining the crystal direction of diamond grinding. Background technique [0002] Due to its unique physical and mechanical properties, especially its extremely high hardness, diamond has irreplaceable applications in the fields of industrial manufacturing and scientific and technological research. In the late 1950s, the United States developed SPDT (Single Point Diamond Turning) technology to meet the development requirements of ultra-precision cutting technology. In this technology, diamond is used as a cutting tool manufacturing material, which also makes diamond tool manufacturing technology a key technology in the field of ultra-precision machining. [0003] Diamond itself has strong anisotropy. This property is manifested in the friction characteristics. The most typical example is that the material removal efficiency of different crystal p...

AI Technical Summary

Problems solved by technology

In practice, when grinding a certain crystal face of diamond, in order to improve the efficiency, it is always necessary to gradually adjust to find the grinding direction with high material removal rate, but it is difficult to obtain the specific parameter value of the grinding direction.

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