OPTIMIZATION OF TURNING PROCESS PARAMETER FOR LATHE MACHINE BY USING TAGUCHI METHOD

In this project attempts on optimizing the turning process under various machining parameters by Taguchi method to develop or implement the quality of machined product. Taguchi optimization methodology is applied to optimize cutting parameters in turning EN 8, steel with coated cemented carbide tool under dry cutting condition. The center lathe machine is used to conduct experiments based on the Taguchi design of experiments (DOE) with orthogonal L9 array. The orthogonal array, signal to noise ratio (S/N) and were employed to Experiments conducted and subsequently analysis performed by using the Taguchi method. The optimum characteristics for high hardness in turning operation are identified. From the response graph plotted between turning parameters and hardness of EN 8, it is observed that there is increase in hardness as the speed is increased at 850 rpm but when speed is further increased hardness goes decreased. The hardness increases when feed rate is changed from 0.2 mm/rev to 0.3 mm/rev and 0.3 to 0.4 mm/rev, but when depth of cut is 1 mm then hardness increases, but as the depth of cut is further increased then hardness decrease considerably.