Analysis of surface roughness and material removal rate in turning using Taguchi´s technique

This paper deals with the experimental investigation of effects of geometrical parameters of cutting tool insert and analysis of output responses such as surface roughness and Material Removal Rate (MRR) during machining AISI 1045 steel. This analysis is essential, since the wear, occurring at the cutting edge of the insert favors the surface roughness at the machined surface. Taguchi´s Design of Experiment (DoE) is used to design the experimental array, based on which experiments were conducted. For 3 parameters and 3 levels of each parameter, L₉ Orthogonal array is selected. To evaluate the output quality characteristics Taguchi´s technique Signal-to-Noise ratio is used, based on which the optimum conditions are determined. An interaction effect of one input parameter over another parameter is studied to understand their influences on output performance characteristics. Analysis of Variance (ANOVA) is also performed to study the contribution of individual parameter on the output quality characteristics.