Selection of an Optimal Parametric Combination of Tool Geometry and Work Piece for the Requirement of Better Surface Finish for Turning Operation using CNC Turning Operation

Now-a-days, machining operations are carried out using modern computerized automated machines to overcome the limitations of conventional machines. Challenge of modern machining industries is mainly focused on the achievement of high quality, in terms of work piece dimensional accuracy, surface finish, high production rate, less wear on the cutting tools, economy of machining in terms of cost saving and increase the performance of the product with reduced environmental impact. Surface roughness plays an important role in many areas and is a factor of great importance in the evaluation of machining accuracy. The CNC machines play a major role in the modern machining industry. The selections of best combination of tool insert and work piece material is most critical step to obtain the desired surface finish. Among the number of available tool insert and work piece combination, one can be selected based on the MADM (multiple attribute decision making) methods. The work presented in this paper covers the application of various MADM methods for the best selection of tool-work piece combination for turning operation to be performed on EN-8, SS 304 and EN-19 to get better surface finish for given constant cutting parameters.