MEASUREMENT OF TOOTH FLANKS BY GEAR MEASURING INSTRUMENTS AND EVALUATION OF ITS SURFACE TEXTURE

(EFFECT OF DIFFERENT PROVE PROFILES ON MEASUREMENT RESULTS)

Abstract

In this study, a measurement method of surface texture of tooth flanks with CNC gear measuring instruments is validated. Especially, in order to inspect the effect of probe profiles of the measuring instruments on the evaluation of surface texture, this paper proposes a numerical calculation method simulating contacts between the probe of the CNC gear measuring instruments or the surface roughness instruments and tooth flanks of interest. The profile curves of the surface measured by the different probes are calculated with this method. In the simulation, scanned data of roughness standard test pieces are used as the height of tooth flanks, and ideal models of probe based on design drawings are used to calculate the probe motion. Finally, the statistical characteristic quantities of the simulated profile curves are evaluated to show the effect of the prove profile difference on the measurement results.