Wholly smoothing cutter orientations for five-axis NC machining based on cutter contact point mesh
Wholly smoothing cutter orientations for five-axis NC machining based on cutter contact point mesh
复制标题
DOI：
10.1007/s11431-010-0064-x
复制
发表时间：
2010-04
期刊：
影响因子：
--
通讯作者：
Q. Bi;Yuhan Wang;Limin Zhu;H. Ding
中科院分区：
文献类型：
--
作者：
Q. Bi;Yuhan Wang;Limin Zhu;H. Ding
针对球头铣刀的五坐标数控加工，分析了不同刀位下的切削力。然后定义一个措施来量化刀具方向变化的影响。针对这一问题，提出了一种基于刀触点网格的刀位全局优化模型和算法。该方法具有两个优点。一是对刀具沿进给方向和截齿进给方向的姿态平滑度沿着进行了整体优化。二是只需要计算网格点的可达锥，提高了计算效率。仿真结果表明，该方法具有加工效率高、进给速度稳定、切削力平稳等优点。最后通过算例和切削实验验证了该方法的有效性。
Cutting forces with respect to different cutter orientations are analyzed for five-axis NC machining of a ball-end cutter. A measure is then defined to quantify the effects of cutter orientation variation. According to the measure, a novel model and algorithm are proposed to wholly optimize cutter orientations based on a cutter contact (CC) point mesh. The method has two advantages. One is that the cutter orientation smoothnesses along the feed direction and pick-feed direction are both wholly optimized. The other is that only the accessibility cones of mesh points are required to compute and the computation efficiency is improved. These advantages are shown by simulating the machining efficiency, the stability of feed velocities and the smoothness of cutting force. A computational example and a cutting experiment are finally given to illustrate the validity of the proposed method.