Coated and uncoated tool inserts offers certain degrees of control on desired rate of Tool Wear and surface roughness to an extent. Significant input parameters are selected in order to get influence on the response variables. Experiments were conducted on specimens of EN8 alloy steel material with the help of PVD coated TiALN insert and uncoated carbide insert. The experimental analysis is based on Taguchi method. Taguchi method has become increasingly popular in recent years. It involves both

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... experimental design and analysis aspects. Taguchi methods employ special fractional experiment design called orthogonal array. Notation of orthogonal array is La where " L" is symbol for orthogonal array, "a" stands for the number of experiments required for this array. Taguchi methods (For the data analysis, Statistical Techniques of ANOVA was used) are performed find out significant parameters. Optimization of process parameters is carried out by Grey Relational Analysis method. GRA method is powerful and most versatile tool which can manipulate the input data as per requirement and comes with results that can be used to have best multi performance in response concerns.