Comparative Performance Analysis of Insert Geometry for Turning Operation on CNC Turning Centre

In this research work the effect and optimization of machining parameters on surface roughness and material removal rate (MRR) in a turning operation are investigated by using the Taguchi method. The experimental studies are conducted under varying cutting parameters including cutting speed, feed rate, depth of cut and cutting nose radius of insert. An L9 orthogonal array, the signal-to-noise (S/N) ratio are employed to the study the performance characteristics in the turning of AISI 1045 Mild steel using WNMG331RP, WNMG332RP and WNMG333RP carbide inserts on CNC turning center. The conclusions revealed that the feed rate and nose radius were the most influential factors on the surface roughness and Material Removal Rate (MRR) in CNC turning process is greatly influenced by depth of cut followed by cutting speed. For simultaneous optimization of Surface roughness (Ra) and material removal rate (MRR) depth of cut is the most significant parameter affecting the performance followed by the nose radius.