Patent ID: 6089750
Filing Date: 2000-07-18
Classification: B23Q,G01J,Y10T

Abstract:
A noncontact temperature distribution measuring apparatus for measuring a two-dimensional temperature distribution of a cutting tool during a cutting process, said apparatus comprising:cutting state setting means for setting, during said cutting process, a substantial cutting period for bringing said cutting tool and a material to be cut in contact with each other and a substantial noncutting period for separating said cutting tool and said material to be cut from each other;imaging means for capturing said cutting tool a plurality of times at an interval of a predetermined delay time;changing characteristic computing means for relating a plurality of image information items obtained upon a plurality of capturing operations effected by said imaging means, for each information item corresponding to an identical location of said cutting tool, to an exposure time which has elapsed from a switching point of time from said cutting period to said noncutting period, so as to determine a tendency of change in the image information with respect to said exposure time; andtemperature distribution computing means for computing the two-dimensional temperature distribution of said cutting tool at said switching point of time according to said tendency of change determined by said changing characteristic computing means,wherein said imaging means has an imaging optical system which is set such as to effect imaging at a focal length not shorter than 50 mm and a resolving power finer than 30 .mu.m.