Abstract
Surface finish, dimensional accuracy, and condition of surface layer being the main criteria in finish turning, it is shown in this paper that the phenomenon of concentrated tool-wear which accompanies the machining of steel is directly associated with the first criterion and may affect the rest. A mathematical relationship connecting the length of grooves and the width of the wear-land on the clearance face with the value of maximum roughness on the surface generated was found to exist. An attempt was made to establish experimentally an empirical relationship in the case of centre-line-average roughness. In a series of carefully conducted tests a number of variables including the grade of carbide tips used, workpiece material, rake and clearance angles of tools, feeds and speeds, were studied.
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