Application of continuous spindle speed variation for chatter avoidance in roughing milling

Abstract

This paper investigates the effectiveness of the continuous spindle speed variation (CSSV) technique as a chatter-suppression strategy in the milling process. For this purpose, a two-fold study was carried out: on the one hand, a simulation analysis, and on the other, experimental tests. First, the semidiscretization method has been extended to n-mode systems in any spatial direction and modified to include simulation capabilities concerning spindle speed variation with different waveforms. A new kind of stability map for different amplitude and frequency variations is proposed in order to optimize the parameter selection when machining. Finally, the effectiveness of the CSSV technique is verified through experimental tests.