Abstract
Polycrystalline diamond (PCD) has been widely used for various cutting tools and die components making use of its hardness and wear resistance properties. The polishing method of single diamond substrate and PCD using ultraviolet irradiation was newly developed to obtain mirror-finished surfaces. Due to the long polishing time in this method, a better pre-machined surface is required to shorten the total processing time. In this study, constant-pressure dry grinding of PCD was performed using a cup type metal-bonded diamond wheel and a constant pressure unit. The grinding was conducted by the dry grinding method and the mist grinding method. These experiments indicated that the dry grinding was more suitable than mist grinding. In addition, it was shown that the flat parts of grains with the same protrusion height on a diamond wheel could produce a good quality grinding surface in the constant-pressure dry grinding of PCD.
