摘要
为提高圆刃铣刀螺旋铣削仿真精度,提出一种基于Z-map的高精度数值仿真方法.根据圆刃铣刀螺旋铣削运动的几何机理进行切削区域单值区划分与切削区域网格点的快速搜索,推导出用于高精度Z-map网格点z值计算公式,以保证数值计算具有平方收敛速度.仿真实例表明,该方法在保证切削仿真计算速度的前提下,显著地提高了圆刃铣刀螺旋铣削的仿真精度.
In order to improve the precision of simulation of helical milling with round blade cutter, a higher-order accurate numerical method for Z-map milling simulation is proposed. Based on the geometric mechanism of the cutter＇s spiral motion, cutting area is divided into single-value parts and the mesh point of the cutting area is searched quickly. Mathematical formulas are deduced, which are suitable to high-accuracy calculation of z value of the Z-map grid points, and ensure the iterative numerical calculation has a square convergence rate. Results of the simulation example show that the cutting simulation is guaranteed at a satisfactory speed, and this method evidently enhances the simulation precision of round blade cutter helical milling.
出处
《计算机辅助设计与图形学学报》
EI
CSCD
北大核心
2009年第10期1420-1426,1432,共8页
Journal of Computer-Aided Design & Computer Graphics
基金
辽宁省博士启动基金(20071022)
中国博士后科学基金(20060390799)
