On the Performance Tests of Single-Point Sintered Carbide Tools : On the Determination Method of Tool Life in Test of Facing Type

Abstract

Turning type of tool life tests, which is commonly used for this purpose, requires much time and materials, and is so expensive. I showed in this article the simple but useful method for tool lift tests by means of facing type of tests. This method contains two ways, one is D-type facing cutting test of which the diameter of disk is varied keeping the turning speed constant, another is N-type facing cutting test of which the turning speed of disk is varied keeping the diameter constant. The relation between these variable and the wear is linear on the log-log paper, so the linear regression analysis is very useful in both D-and N-type tests. Many samples of P-20 sintered carbide tools were tested, and it was assured that estimation of tool life equation by this method is exactly coincide with that of turning type of tests.