Optimization of Cutting Parameters in Turning-A Doe Approach

The cutting tool life has significant importance in metal turning operation. So the cutting tool life for the maximum permissible value o f flank wear (0.2 mm) is analyzed in this study, in this paper, the Taguchi methodology of optimization is applied to optimize the cutting parameters in turning when machining engine crank pin material with CBN cutting tool inserts. The turning parameters evaluated are, cutting speed, feed rate and depth of cut. The objectives of this study are maximization o f tool life and minimization of specific energy. An orthogonal array, signal-to-noise (S/N) ratio and the S/N charts are employed in order to analyze the individual and interactive effects of the selected turning parameters on the objectives. This result o f the analysis shows the optimal combination of parameters for higher tool life, lower specific energy and good surface finish. By using Taguchi's Design of Experiments (DOE), the other significant effects such as the interaction among the various turning parameters are also analyzed. The Taguchi method is more suitable to optimize the turning parameters as compared with a full factorial design.