Abstract
In recent years, many machinable ceramics with various kinds of properties have appeared in the market. These ceramics are used for a few mechanical and electronic parts. Machinable ceramics consisting of fluor-phlogopite can be machined with tight tolerance using conventional metal cutting equipment and tools.
The purpose of this paper is to study the shape of cutting edge for machining of ceramics with smooth finish. The lapping of the cutting edge is carried out on a newly developed lapping device. The roughness of machined surface and the tool are both improved by lapping the edge of the tool. The main results obtained are as follows : (1) The cutting edge of the insert tool is sharpened and smoothed by lapping with diamond compound. (2) The tool having the lapped edge performs the long tool life and the smooth finish of the work. (3) The flank surface in the lapped cutting edge provides a much smaller amplitude in the cutting force.
