Measurement of tooth flanks with a gear measuring instrument and evaluation of its surface texture (Effect of different probe profiles on measurement results)

Abstract

In this study, a measurement method of surface texture of tooth flanks with a CNC gear measuring instrument is validated. Especially, in order to inspect effect of probe profiles on the evaluation of surface texture, this paper proposes a numerical calculation method that simulates displacement of the probe contacting with tooth flanks of interest. The proposed method uncovers properties of profile curves of tooth flanks measured with different probes, which are installed on the gear measuring or surface roughness instruments. In the simulation, scanned data of a roughness standard test piece is used as tooth flanks, and ideal geometrical models of the different probes 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 probe profile difference on the measurement results.