基于冗余自由度的数控加工轨迹运动分解  

Motion decomposition for NC machining path based on redundant degree of freedom

作　　者：蔡永林[1] 马烨萌 

机构地区：[1]北京交通大学机械与电子控制工程学院,北京100044

出　　处：《北京交通大学学报》2017年第4期111-114,122,共5页JOURNAL OF BEIJING JIAOTONG UNIVERSITY

基　　金：国家自然科学基金(51375040)~~

摘　　要：为降低曲面数控加工中机床运动轴的冲击,提出了采用具有冗余自由度的数控机床实现复杂曲面高速进给加工的思路,通过增加数控机床冗余自由度运动轴,以分解冲击较大机床轴的运动.本文对冗余自由度下机床各轴之间的运动分解原理进行分析,给出了冗余自由度下合成加工轨迹的计算和误差确定方法,并以计算实例验证了所提出思路和方法的有效性.In order to reduce the shock of machine motion axis in surface numerical control（NC）machining,the method of using machine tool with redundant degree of freedom（DOF）in high speedfeed complex surface machining is proposed in this paper.The motion axis of redundant degree of freedom in numerical control is added to decompose the movement of machine tool axis with greater impact.In this paper,the decomposition principle of the movement of machine tool axis under redundant DOF is analyzed so as to provide the method of synthesized machining path calculation and error determination under the condition of redundant degree of freedom.Finally,the result of calculation example has verified the effectiveness of the idea and method proposed in this paper.

关 键 词：曲面数控加工 冗余自由度 运动分解 高速进给 

分 类 号：TG659[金属学及工艺—金属切削加工及机床]