Application of optical cutting method to measurements of tooth-profile error of minute module gears (1st report) -examination of the method by means of bright field observation-

摘要

This paper introduces a new method to measure tooth profile error of minute module gears. In this method, regarding the surface of a gear as a sort of surface roughness, the optical cutting method is applied. because the tooth depth of the gear here aimed to measure is very low, this method can be expected to be applied availably. To ensure the ability of this method, a measuring apparatus which employs a CCD camera as an observing device was constructed. The optical cutting image of the tooth observed by the CCD camera is led to a computer and the tooth profile is presented with a fine line image processing.