中文摘要：

针对复杂曲面的五轴加工,提出了一种刀具方向控制的方法,并给出了相应的算法。对曲面进行三角网格划分,通过三角面片的法矢比较和面片合并将曲面划分成多个区域;构造区域单位矢量集的锥平均值,先用锥平均值代替区域的初始加工方向,再对刀具方向进行局部优化和修正。通过实例说明该方法在规划刀具方向中的应用。

英文摘要：

This paper presented a methodology and algorithm of tool orientation control for 5-axis sculptured surface CNC machining. First,the surface triangle grids were generated,and the normal vectors of the surface triangle patches were compared,then the patches the normal vectors of which were within a given tolerance were combined as a area.A divided-area algorithm was proposed to find the initial tool orientation by configurating a cone mean vector of the unit vector set,initial tool orientation was optimized and corrected.Finally,computer implementation and examples were provided,the developed method can be used to automate the planning of tool orientation generation.