Modelling cutting force including thrust and tangential damping in peripheral milling process

What is it about?

This paper presents an analytical model to predict cutting force components, including the cutting process damping in peripheral milling. The cutting process damping is associated to the interference mechanism between the tool flank and the machined workpiece surface. It creates two components (thrust and tangential) of a dynamic cutting force. The total force model including the process damping effect is obtained through numerical integration of the local forces. The effects of cutting and tool parameters on process damping and cutting force distributions are discussed. It is shown that the average value of the process damping and the amplitude of the cutting force increase with increasing feed rate, axial and radial depth of cut, and tool diameter; but decrease with increasing cutting speed. Besides, when the tool helix angle increases, the process damping increases, and the cutting force decreases. The number of tool’s teeth does not affect the variation of the damping process and cutting forces. However, it affects the number of cycles of the periodic cutting process. Keywords: peripheral milling, regenerative chatter, milling force, process damping, ploughing mechanism, numerical simulation

Featured Image