基于插值算法的数控机床复合误差补偿技术  

Compound Error Compensation Technique for CNC Machine Tools Based on Interpolation Method

作　　者：王维[1] 杨建国[1] 

机构地区：[1]上海交通大学机械与动力工程学院,上海200240

出　　处：《上海交通大学学报》2014年第1期12-15,21,共5页Journal of Shanghai Jiaotong University

基　　金：国家科技重大专项项目(2011ZX04015-031);国家自然科学基金项目(51275305;51175343)资助

摘　　要：为提高数控机床的加工精度,提出了基于线性插值法和牛顿插值法的数控机床几何与热的复合误差建模方法,并利用数控系统外部机床坐标系的偏置功能,应用自行研发的综合误差实时补偿系统进行误差在线实时补偿.结果表明:所提出的模型具有计算简便、预测精度高等优点,可用于各种复杂加工场合中的数控机床几何误差与热误差的实时补偿.Abstract; In order to improve the accuracy of computer numerical control（CNC） machine tools, a compound modelling method of geometric and thermal error was presented based on linear interpolation and Newton interpolation. Online real time error compensation was implemented by applying the CNC external machine zero point shift function and a novel self developed synthesis error real time compensation system. The experimental results show that the new model is convenient in calculation and precise in prediction. Therefore it is suitable for the real time compensation of geometric and thermal error of machine tools in complex industrial applications.

关 键 词：数控机床 几何误差 热误差 误差补偿系统 误差实时补偿 

分 类 号：TH161[机械工程—机械制造及自动化]