Abstract
Machinable ceramics can be machined to tight tolerance with conventional metalworking equipment and tools. These machinable ceramics have been widely applied to electronic parts, medical appliances, etc.
The purpose of this paper is to study roles of chip shapes and to investigate the cutting mechanism to the chip shape in high efficient cutting. The main results obtained are as follows: (1) Using the cutting tool with large nose radius, high efficient cutting can be performed and the tool life becomes long. (2) Decrease in cross-sectional area of uncut chip or the mean grain size of chip, makes the specific cutting force larger. (3) A few consideration of the chip formation mechanism can be obtained from the study of chip shapes.
