五轴高速高精加工的新型插补算法的研究

Research of New Interpolation Algorithm in Five-axis System with High Speed and Precision Machining

传统CNC系统提供的直线和圆弧插补功能不能满足曲线和曲面造型的加工要求.本文针对当前五轴高速高精加工复杂轮廓零件的需求,设计一种新型的四元数-五次样条插补算法.具有该插补功能的CNC系统在进行加工时,不仅缩短了程序处理时间,而且改善了速度、加速度和有限加加速度的平滑程度.将算法在MATLAB中进行仿真实验,实验结果证明了该算法的可行性和可靠性.

Traditional CNC system can provide the function of line or circle interpolation. This can not meet the needs of machining for curve and 3D-surface. In order to meet the requirements of high speed and high precision machining of complex contour parts in five-axis system, this paper designs a new quaternion-quintic spline interpolation algorithm. In the machining, the CNC system being capable of quaternion-quintic spline interpolation, not only shorters the program proceeding time, but also improves the smoothness of the generated velocity, acceleration and jerk. The interpolation algorithm has been tested in Matlab. The results show the feasibility and the reliability in this algorithm.