Experimental Investigation of Surface roughness of Polypropylene Polymer using TNMG Insert

Abstract

This paper investigate the effect of cutting insert Radius and feed rate on Ra value of surface roughness of the Polypropylene Polymer-PP. According to previous study it is observed, Surface roughness significantly influenced by insert nose radius and feed while turning operation. Hence, this experimental investigation focuses on the on the effect on the nose radius and feed on Ra value roughness, vibration and cutting temperature. Lathe machine used to conduct the experiment with varying spindle speed, Feed rate and Depth of cut. Turning operation has been done by three types of TNMG inserts such as TNMG 160404, 160408 and 160412. While machining Polypropylene Polymer-PP. The Ra value of the surface roughness usually decreases with increases in nose radius. The relationship between cutting speed and nose radius to Ra value is inversely proportion. Feed and depth of cut directly promotional to Ra value. There is less influenced between vibration to temperature and vibration directly influenced on surface roughness.