Machining of diamond by using tool wear during cutting of carbon steel: (Investigation into machining rate of diamond)

This study deals with the development of a method to machine a diamond. This method utilizes tool wear of a diamond during cutting process of carbon steel. A three dimensional shape of diamond has been successfully obtained by the present method in less than one minute. The study in this paper is concerned with the machining rate of a diamond when the crystallographic orientation of a diamond is (1, 0, 0), (1, 1, 0) and (1, 1, 1). The machining rate is best in the case of (1, 1, 0) plane, next in the case of (1, 0, 0) plane, and less in the case of (1, 1, 1) plane. The removal rate of a diamond by the present method is much larger than that by friction between diamond and carbon steel. Some samples of machined diamond by the present method are shown in the end of this paper.