五轴铣削加工刀轴矢量平滑控制算法

Cutter Axis Vector Smoothing Algorithm for Five-Axis Milling

在五轴铣削加工中,现有的刀轴矢量规划方案往往只针对刀轴矢量进行调整而忽略了对加工带宽的影响。考虑到这一问题,提出了一种通过对比刀轴矢量变化率选择性的调整刀轴矢量的方法,既保证了加工带宽又使刀轴矢量的变化保持平滑。同时阐述了平头刀在进给方向上投影的有效切削形状及平头刀加工带宽的计算方法。阐述了由于刀具姿态的变化对加工带宽的影响,提出了理论最佳刀轴矢量位置。通过MATLAB软件进行仿真,对比优化前后刀轴矢量的变化,表明该算法可以有效提高曲面的加工效率和加工质量。

The existing cutter axis vector planning only adjusts the cutter axis vector and neglects the effect on the cutting bandwidth in the five-axis milling process.Considering this problem,a method of adjusting the cutter axis vector by contrasting the change rate of the cutter axis vector is proposed,which not only ensures the cutting bandwidth but also keeps the change of the cutter axis vector smooth.At the same time,the effective cutting shape and the calculation method of the cutting bandwidth of the flat-end cutter in the feed direction are described.The influence of the change of cutter attitude on the cutting bandwidth is expounded,and the optimal cutter axis vector position is proposed.The MATLAB software is used to simulate and compare the changes of the cutter axis vector before and after optimization.It shows that the algorithm can effectively improve the processing efficiency and processing quality of the curved surface.