Abstract
Machinable ceramics have low density, excellent oxidation and corrosion resistance compared to other structural materials. These machinable ceramics have to be machined by turning and milling.
The purpose of this paper is to investigate the size of chipping on the corners of works in milling of machinable ceramics. The milling was carried out by single point WC sintered carbide tool. The chipping size on the work material is clarified by the relation between the angles of work corner and disengagement angle in cutting.
The main results obtained are as follows: (1) The wear rate of the tool in milling was nearly twice that of the turning. (2) Chipping sizes on the corners of works were very affected by the disengagement angle and depth of cut. (3) These chipping sizes were estimated from transverse rupture strength of the ceramics and cutting conditions.
