Paper Title
Optimization Of Surface Roughness Using Taguchi Method In End Milling Of Steel Grade En19 With Tin Coated Carbide Tool

In this paper, the Taguchi method has been applied to optimize the machining performance in terms of surface quality of the product, with EN 19 grade steel of cross section 100mm×100mm×20mm as the work piece. Tin-coated carbide cutting tool having four flute 8mm diameter, shank length 30mm and cutter length 35mm is used for experiment on a vertical milling machine SV-2E. Taguchi’s L9 orthogonal array is employed for the experimentation. The factors considered for experimentation and analysis were cutting speed, feed rate and depth of cut. Signal-to-noise (S/N) ratio and analysis of variance (ANOVA) were employed to analyze the effect of these milling parameters. The analysis results revealed that the spindle speed was the dominant factor affecting surface roughness. Confirmation test results showed that the Taguchi method was very successful in the optimization of machining parameters for minimum surface roughness. Keywords— Analysis of variance (ANOVA), milling, surface roughness, Taguchi method