METHOD FOR MEASURING SURFACE ROUGHNESS OF ROTOR, METHOD FOR MEASURING PROJECTION AMOUNT OF ABRASIVE GRAIN IN GRINDING WHEEL, AND GRINDING MACHINE

摘要

PROBLEM TO BE SOLVED: To provide a method for measuring a projection amount of abrasive grains in a grinding wheel, more easily measuring the projection amount of the abrasive grains of the grinding wheel without grinding a workpiece, and also to provide a grinding machine performing dressing at appropriate timing based on the projection amount of the abrasive grains obtained, and a method for measuring the surface roughness of a rotor more easily without being limited by the projection amount of the abrasive grains of the grinding wheel.;SOLUTION: In the method for measuring the surface roughness of the rotor by obtaining the surface roughness of the rotor, based on a physical amount of fluid detected by using a fluid detection means for measuring the physical amount of the fluid rotating with the rotor surface, a surface roughness-fluid physical amount characteristic which is obtained by measuring in advance at least either one of the fluid speed and pressure of the fluid corresponding to the surface roughness, is memorized, and the surface roughness of the rotor is obtained based on at least either one of the fluid speed or pressure of the fluid measured using the fluid detection means in a position departing from the surface of the rotor by a predetermined distance, and the surface roughness-fluid physical amount characteristic.;COPYRIGHT: (C)2011,JPO&INPIT