An Experimental and Statistical Investigation on Shape Error in Interrupted Grinding

Abstract

In this paper, the effect of grinding parameters (grain size, depth of cut, table speed and cutting width) on the shape error in the interrupted
surface of GS-C25 material were experimentally and statistically investigated by using Taguchi method. A square geometry was cut into and
removed from block samples by wire electrical discharge machine to provide an interrupted grinding material. After interrupted surface grinding
experiments, shape error was measured by means of 3-dimensional optical measuring system with a strong light source. The Taguchi optimization
approach, the analysis of variance, and linear regression analyses were employed to analyze the effect of grinding parameters. The statistical
analysis of experimental data was performed using the Minitab 15 software. The optimization results show that the optimal combination for
less shape error to use fine grinding wheel, lower depth of cut and width of cut and middle table speed have been given the best results. A linear
mathematical model for the shape error was established between grain size of wheel, depth of cut, table speed and width of cut.