Increasing the quality of the surface layer of the holes
The paper presents the results of laboratory studies aimed at improving the quality of the surface layer of holes processed by drilling by reducing the depth of the defective layer and the magnitude of the degree of work hardening as a result of varying the parameters of the cutting mode. It has been determined that the parameters of the cutting mode have a direct proportional effect on the degree of work hardening of the machined surface, with the feed being influenced to a greater extent. With an increase in cutting speed and feed, the degree of work hardening of the machined surface increases to 75%, which will negatively affect the durability of the cutting tool. Cutting speed is inversely proportional to the depth of the defective layer of holes, feed is directly proportional.