关键词: 切削力, 尺度效应, 刀具偏心, 微细铣削, 振动辅助

Abstract: Based on the mechanics analysis method and the force model of oblique cutting element, considering the influences of tool run-out, size effect and cumulative effect on the instantaneous depth of cut in the actual cutting processes, combining the kinematics characteristics of 2D vibration assisted micro-milling, the instantaneous depth of cut model of 2D vibration assisted micro-milling was established according to the differences of cutting forces for shear areas and plough areas. In order to achieve the purpose of vibration assisted machining, based on the self-designed and optimized non resonant 2D compliant vibration stage, the corresponding 2D vibration assisted micro-milling tests of aluminum alloy Al6061 were carried out, the cutting force curves of Al6061 were simulated by MATLAB software, and the correctness of the established 2D vibration assisted micro-milling cutting force model was verified by comparative analysis. Finally, based on the established cutting force model, the influences of vibration amplitude and frequency on the milling forces were analyzed.

Key words: cutting force, size effect, tool run-out, micro-milling, vibration assisted