Effect of Tool Geometry on Chip Morphology Formed During CNC Turning of a Round Shaped Product

Abstract

Characterization of chip formation and correlation between tool geometry and chip formation is an important aspect for generation of better surface of the finished job in CNC lathe machine. For generating the specific round profile of the job, the curvature drawn by the contact point between tooltip and workpiece varies each time with longitudinal distance. In this research work, a mathematical correlation between tool geometry and the machining parameters and its effect on the chip morphology is established by orthogonal turning of Aluminium rods using an HSS tool with a zero rake angle. The results have been verified experimentally with a set of machining parameters like spindle speed, feed and depth of cut and the morphology of the chips were studied using SEM analysis.