HIGH HARDNESS MATERIAL WORKING METHOD AND WORKING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a high hardness material working method eliminating the problems of heat resistance and clogging of a grindstone.SOLUTION: A working method making a high hardness material touch a rotating polishing tool while rotating the high hardness material comprises the steps of: heating the high hardness material to a temperature higher than a predetermined working temperature at a position different from a machined part so as to become the working temperature at that machined part and thereby forming a softened layer with a hardness lower than a surface layer of the high hardness material; working the high hardness material by making the polishing tool rotate at a speed such that the temperature of the polishing tool which rises due to heat input from the high hardness material at machined part to the polishing tool becomes no more than a heat resistance temperature of the polishing tool while making the high hardness material touch the polishing tool; cooling the polishing tool at a position which is different from the machined part; and washing the polishing tool at a position which is different from the machined part.