Abstract
It is necessary to estimate the cutting force accurately in order to predict chatter vibrations. In this research, dynamic cutting force coefficients are obtained from shaper cutting experiments. The depth of cut is varied periodically either by tool oscillation or by cutting a wavy workpiece. The experiments show that the dynamic cutting force direction is different from the static one. The phase lead of the main cutting force to the chip thickness variation becomes larger as the average depth of cut is increased or as the wave length is shortened when cutting a wavy workpiece without tool oscillation.
