Optimisation of machining parameters in interrupted cylindrical grinding using the Grey-based Taguchi method

Selection of machining parameters is very important to obtain desired accuracy with good surface quality in cylindrical grinding. The present study focused on the optimisation of the continuous and interrupted cylindrical grinding of AISI 4140 steel. The effects of three machining parameters, such as workpiece speed, depth of cut and the number of slot, on multiple performance characteristics (MPC), surface roughness and roundness error (RE), were investigated using Grey-based Taguchi method. The optimum parameter settings and the most influential factor are determined by both the Grey analysis and the analysis of variance. Both the surface roughness and the RE decrease with the decreasing of depth of cut and number of slot.