Important Factors Affecting the Tool and Work Piece for the Requirement of Improved Surface Finish for Turning Operation in CNC Machine

These days, machine operations are carried out using computerized automated machines to overcome the limitations of conventional machines. Challenge of modern machining industries is primarily focused on the achievements of high quality, in terms of work piece dimensional accuracy, surface finishing, high production rate, less wear and tear on the cutting tools, economy of machining in terms of cost saving and increase the performance of the product with reduced environmental effects. Surface roughness is the most important factor in production and having great importance in the evaluation of machining accuracy. There is a huge utilisation of CNC machines in the modern machining industry. The selections of best combination of tool insert and work piece material is most critical assignment to obtain the better 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 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.