旋风铣削加工摩擦系数的仿真分析

The simulation analysis on the coefficient of friction in the whirlwind milling process

通过建立旋风铣削的数值分析模型,研究了切削深度、切削速度和刀具形状对加工摩擦系数的影响规律,结果表明:平均摩擦角随着切削深度的增大呈现先减小后增大的变化规律;切削速度对平均摩擦角的影响不是很明显;当改变刀具的倒棱角度时,平均摩擦角变化比较明显,较小的倒棱角度20°工况下易获得较小的平均摩擦角0.520 6rad。仿真分析结果对研究旋风铣削的动态特性具有重要的指导意义。

Based on the numerical analysis model of whirlwind milling,it analyzes the cutting depth,cutting speed and tool shape to the influence of friction coefficient,shows that the average friction angle firstly decreases and then increases with the cutting depth increasing,cutting speed is not obvious with average friction angle variation,chamfer angle changing of the cutting tool makes the average friction angle significantly variation,the average friction angle is 0. 5306 rad at 20°chamfer angle condition. The simulation result is useful for dynamic characteristics study of whirlwind milling.