Abstract
In order to get a foundation for scientific understanding of high precision and high productivity grinding of fine ceramics with metal bond diamond wheel, cylindrical plunge grinding processes of normally sintered silicon nitride, alumina, partially stabilized zirconia and reaction bonded silicon nitride are experimentally analyzed with bronze bond diamond wheels. Main results obtained in this paper are as follows : (1) There are three distinct grinding states in a plunge grinding cycle of normally sintered fine ceramics just as in grinding steels. (2) The ratio of tangential force to normal one is remarkably smaller in grinding fine ceramics than that in grinding steels. (3) The wheel wear in grinding reaction bonded silicon nitride is larger than that in other normally sintered fine ceramics. (4) Grinding ratio becomes lower in the order of partially stabilized zirconia, alumina, silicon nitride, and that of reaction bonded silicon nitride is the smallest of all work materials used in this study.
