Cutting Speed Recommendation Based on Cutting Tool Performances in Transverse Cutting of Lathe Machine: Simulation Approach

In this article, a novel strategy to recommend the cutting speed in lathe machines is introduced. The recommendation was obtained through a transverse cutting in a CNC lathe machine with the G97 feature. However, as a preliminary study, this study was developed through a simulation approach in Matlab/Simulink to introduce an insight that an unwanted behavior in transverse cutting with the G97 feature can give a novel way to obtain recommended cutting speed value for the machining process. The simulation was built with one degree of freedom of the mechanical system (m, c, and k) mathematical model. In addition, since this study involves the speed change effect in the turning process, thus the velocity-dependent force coefficient was also included in that model. The simulations were processed with three different spindle speed settings and constant feed rate and cutting depth values. Moreover, the simulation also implicated different cutting force coefficients to analyze the recommended cutting speed in different materials to gain deeper insight. The results showed that the cutting speed can be recommended by considering the unwanted behavior of cutting force in CNC lathe machine transverse cutting. This approach's recommended cutting speed of AISI 1045 is 120–565 m/min. However, that range's maximum limit will also depend on the maximum CNC spindle speed ability to rotate.