对高速铣削典型铝合金框架结构工件时的切削力和加工表面质量进行了试验研究。在高速进给铣削时 ,当进给方向发生改变 ,机床的加减速特性将导致在拐角处进给量减小、铣刀切入角增大 ,从而引起切削力增大和加工振动。在恒切削效率条件下高速铣削铝合金的试验结果表明 ,高速铣削时宜采用较小的轴向切深和较大的径向切深 ,以减小铣削力、提高加工表面质量 ;刀具动平衡偏心量是高速铣削时引起轴向振纹的主要原因 Experiments were carried out on the cutting force and the machined surface quality of high speed milling of typical aluminum frame workpieces. In high-speed feed milling, when the feed direction changes, the acceleration / deceleration characteristic of the machine will lead to the decrease of the feed at the corner and the increase of cutter penetration angle, resulting in the increase of cutting force and machining vibration. The experimental results of high speed milling of aluminum alloy under constant cutting efficiency show that smaller axial cutting depth and larger radial depth of cut should be adopted in high speed milling to reduce the milling force and improve the quality of the machined surface. The amount of axial vibration caused by high-speed milling the main reason