Abstract
A new machining method for single crystal diamonds has been investigated, as a result of the considerable need of three-dimensional shapes of diamond. This method utilizes tool wear of diamond during cutting of carbon steel. A three-dimensional shape of diamond has been successfully obtained by this machining method. The study in this paper is concerned with the machining removal rate for each crystallographic orientation of diamond. Indeed, the fastest machining rate occurs with (1, 1, 0) plane, followed by (1, 0, 0) plane, and it is less in the case of (1, 1, 1) plane. Nevertheless, this machining method can be applied for all orientations and diamonds can be quickly machined. The removal rate of diamond by present machining method is much larger than that by rubbing between diamond and ferrous material. Some samples of the machined diamonds by present machining method are shown in the end of this paper.
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