The grinding of ceramic knife-edge

摘要

The purpose of this paper is to obtain machining characteristics of the ZrO{sub}2 ceramic. The surface grinding was carried out with diamond wheels by traverse method under specified grinding condition. The main results are as follows. Accordingto increase removal rate of the work and feed rate, chipping of the edge and crack of ground surface grow. Also, plastic flow zone increases simultaneously. Plastic flow zone was not recognized in Si{sub}3N{sub}4, SiC and Al{sub}2O{sub}3 except forZrO{sub}2. It is desirable to increase wheel speed in order to increase the plastic flow zone. In the method, chipping of the edge and cracks of the ground surface downs. Chipping at the edge produced by up-cut grinding way is smaller than that obtainedby down-cut. As the influence of the shape of the edge, chipping size of the edge downs conversely for increasing of the edge angle. However, it is not influenced so much for edge angle larger than 45 degree.