基于容差限制的五轴侧铣直纹面刀具轨迹规划  

Tool Path Planning for Five-axis Flank Milling of Ruled Surface Considering Tolerance

作　　者：田军锋[1,2] 林浒 姚壮[1,2] 李杰[1,2] 于金刚[2] 

机构地区：[1]中国科学院研究生院,北京100039 [2]中国科学院沈阳计算技术研究所,沈阳110168

出　　处：《小型微型计算机系统》2013年第9期2211-2214,共4页Journal of Chinese Computer Systems

基　　金：国家科技重大专项(2011ZX04016-071)资助

摘　　要：刀具轨迹规划是五轴侧铣加工的一个关键问题,以前的研究表明通过全局最小化加工误差来优化刀具轨迹是一个可行的方法,然而,全局加工误差最小并不能保证局部误差可以控制,局部刀具轨迹误差可能超过实际加工中允许的容差值.因此,本文提出全局和局部最优相结合的方法,该方法在刀具轨迹规划时考虑了给定容差的限制,使得直纹面侧铣刀具轨迹最优和误差可控.在全局最优化过程中,对误差过大的刀具轨迹进行局部调整,使得误差满足容差值.对本文算法进行仿真实验验证,实验结果证明了本文算法的可行性和有效性.Tool path planning is a critical issue in five-axis CNC flank milling operation. Previous studies have shown that optimisati- on-based tool path planning by global minimising the machining error is a feasible approach. However, global minimal machining er- ror may not guarantee a local machining error controllable. The error of local tool path may exceed a given tolerance in practical ma- chining. Therefor, this paper proposes a method based on combination of global and local optimization in consideration of a given tol- erance, which makes tool path for flank milling of ruled surface optimal and error controllable. Big errors of tool paths can be partial- ly adjusted to respect a specified tolerance in global optimization process. The experiments of the simulative are made by this algo- rithm. The result verifies the feasibility and validity of the proposed approach.

关 键 词：五轴加工 侧铣 直纹面 刀具轨迹规划 容差 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]