复杂曲面环形刀五轴加工的自适应刀轴矢量优化方法  

An Adaptive Optimizing Tool Orientation Method for 5-axis Toroidal-end Milling of Free-form Surfaces

作　　者：张莹[1] 张定华[1] 吴宝海[1] 李山[1] 罗明[1] 

机构地区：[1]西北工业大学现代设计与集成制造技术教育部重点实验室,西安710072

出　　处：《中国机械工程》2008年第8期945-948,共4页China Mechanical Engineering

基　　金：国防基础科研资助项目(K0504020512);航空科学基金资助项目(05H53080)

摘　　要：针对复杂曲面的环形刀五轴加工,建立了二阶泰勒逼近下的加工带宽模型与刀轴倾角之间的函数关系。通过分析函数变化规律,基于刀具切削刃与被加工曲面的形状匹配原则自动计算满足局部可铣性充分条件的后跟角,并以最大化加工带宽为目的优化侧偏角。算例表明,该算法能有效地缩短加工路径,提高加工效率。This paper focused on the 5--axis milling of free--form surfaces with the toroidal--end cutter. First, the function between the machined strip width based on second order approximations and the tool orientation was constructed and analyzed. Second, according to the principle that the cutting shape of the cutter matches the designed surface at the cutter contact point, the inclination angle which satisfied the local millable condition was calculated automatically. Finally, the optimal tilt angle was determined by maximizing the machined strip width. Examples show that the algorithm presented herein is feasible and the results are with shorter tool path and efficiency.

关 键 词：五轴加工 环形刀 加工带宽 刀轴矢量优化 

分 类 号：TP391.7[自动化与计算机技术—计算机应用技术]