SIZING DEVICE FOR MACHINE TOOL AND RECORDING MEDIUM READABLE WITH COMPUTER, WHICH IS RECORDED WITH CONTROL PROGRAM FOR THE DEVICE IS RECORDED

摘要

PROBLEM TO BE SOLVED: To enable accurate dimension of a diameter of a workpiece to be measured by compensating measurement error due to thermal displacement generated with machining the workpiece.;SOLUTION: The sizing device for machine tool is provided with a sizing head (11) which measures dimension of a workpiece by putting a stylus (10) into contact with the workpiece, a stylus thermal sensor (20) which measures stylus temperature, machine thermal sensors (21 and 22) which measure machine temperature as an index of the temperature of a machine tool itself, a surrounding thermal sensor (23) which measure surrounding temperature or ambient temperature of the machine tool, and a calculating means for thermal displacement compensation. The calculating means for thermal displacement compensation calculates and outputs the thermal displacement compensation data for dimensions measured with the sizing head, by operating at least a plurality of thermal variable obtained on the basis of temperatures measured with the stylus thermal sensor, the machine thermal sensors and the surrounding thermal sensor, regarding as input data and using the neural network.;COPYRIGHT: (C)2002,JPO