铝合金6061微尺度铣削的铣削力仿真与实验研究

采用有限元仿真和单因素实验相结合的方法，研究了铝合金6061微尺度铣削的铣削力影响因素.建立了刀具和工件的三维模型并对其进行装配和网格划分，通过有限元仿真模拟了铝合金6061材料的微尺度铣削过程，得到了铣削速度和铣削深度对铣削力的影响规律，并进行了单因素实验研究.结果表明:随着主轴转速的不断增大，铣削力先增大后减小，转折点为24000r/min;随着铣削深度的不断增大，铣削力先增大后减小再增大，转折点为10μm和12μm;随着进给速度的不断增大，铣削力也不断增大.优选出铝合金6061材料微尺度铣削最优工艺参数组合为:主轴转速48000r/min，铣削深度5μm，进给速度20μm/s.

Simulation and Experimental Study on the Milling Force of Aluminum Alloy 6061 in Micro-milling

The finite element simulation and single factor experiment were combined to carry out the research of the influential factors for the milling force of aluminum alloy 6061 in micro-milling. The three-dimensional model of the tool and workpiece was established and assembled， and the mesh was also divided. The micro-milling process of aluminum alloy 6061 material was simulated， and the influence of milling speed and milling depth on the milling force was obtained by the finite element simulation. The single factor experimental study was also conducted. The results showed that: with the increase of spindle speed， the milling force increases first and then decreases， whose turning point is 24000r/min; with the increase of milling depth， the milling force increases first and then decreases and increases， whose turning point is 10μm and 12μm; with the increase of feed rate， the milling force also increases. The optimized parameter combination of aluminum alloy 6061 material in micro-milling is as follows: the spindle speed is 48000r/min， the milling depth is 5μm， and the feed rate is 20μm/s.