Statistical evaluation of surface finish and its relationship to cutting parameters in turning

Abstract The surface generated by the turning operation is assumed to be homogeneous and the profile parallel to the tool feeding direction is used for the characterization purpose. The statistical parameters and geometric properties of the surface profile are defined. Twenty-seven tests were performed on a lathe using mild carbon steel workpieces. A 33 factorial design is used to study the influence of feed rate, nose radius, and cutting speed on the surface geometry. Response surface contours are constructed and it is shown that these may be used to choose the cutting conditions for a given surface geometry.