Graph of correlation function between helix form deviations of helical gears

Abstract

In this research, we measure the tooth helix error of the helical gear and determine the correlation coefficient by calculating the inner product.We visualize the relation between each tooth helix error by creating graph with correlation coefficients expressed as numbers from -1 to 1 as sides represented by grayscale and with each tooth as a vertex.We examine a new evaluation method of the geometrical error of the gear.