Optimization of Tangential Force, Feed Force and Surface Roughness Using Taguchi Technique in Turning Operation

Abstract

The objective of this paper is to obtain optimal turning process parameters (cutting speed, feed rate and depth of cut) resulting in an optimal value of feed force, tangential force and surface roughness for machining EN-19 steel with an coated carbide tool insert. The effects of the process parameters on the various responses have been arrived at using Taguchi's design of experiments approach. The results indicate that the selected process parameters significantly affect the mean and variance of feed force, tangential force and surface roughness. The contributions of parameters from the ANOVA table for measured feed force, the depth of cut (78.3%) has a major contribution than that of feed rate (8.0%) and cutting speed (5.1%). Similarly for a measured tangential force (Fy) the depth of cut (70.6%) has a major contribution than that of feed rate (24.4%) and cutting speed (1.6%). In case of measured surface roughness (Ra), the feed rate (67.8%) has a major contribution, the cutting speed (14.4%) and depth of cut (12.5%). The predicted optimum feed force, tangential force and the surface roughness are 124N, 187N, and 2.36μm respectively are very much near the experimentally obtained values.