Study on Influence of Process Parameters and Insert Nose Radius on Surface Roughness in Turning Operation

In engineering manufacturing, contribution of machine tools is a vital deciding factor in fulfilling the dynamic requirements of an industry. In this context, an effort has been made to determine the most significant factor on surface roughness on mild steel material in plane turning operation. In the current study, an experimental work is carried out to determine the effect on surface roughness while machining under various machining factors, cutting tool insert nose radius and process parameters. The experimental trials were designed with Taguchi L9 orthogonal array and carried out for each insert nose radius with different levels of process parameters, spindle speed, depth of cut and feed rate. The surface roughness of the machined part was measured for each trial. The effect and significance of process parameters and insert tool nose radius on surface roughness was analysed using Analysis of variance (ANOVA). The investigation reveals that the spindle speed is the most significant factor on surface finish during plane turning operation.