Optimization of Turning Process for Surface Quality Improvement of Hard AISI M7 Tool Steel

Abstract

In this study, the Taguchi technique is used to examine the impact of changing an insert's geometric parameter, such as its nose radius, on surface roughness during a CNC turning operation for AISI(M7). The process parameters that are varied throughout the experimental trials include cutting speed, feed rate, cut depth, and insert nose radius. The performance characteristics in the CNC turning of AISI(M7) employing TNMG160404, TNMG160408, and TNMG160412 Tin coated carbide inserts on CNC turning centre are studied using a L9 orthogonal array and the signal-to-noise (S/N) ratio. The feed rate and nose radius were shown to have the greatest effects on surface roughness during the CNC turning process.