摘要
To reduce mechanical vibrations induced by big errors compensation, a new software compensation method based on an improved digital differential analyzer (DDA) interpolator for static and quasi-static errors of machine tools is proposed. Based on principle of traditional DDA interpolator, a DDA interpolator is divided into command generator and command analyzer. There are three types of errors, considering the difference of positions between compensation points and interpolation segments. According to the classification, errors are distributed evenly in data processing and compensated to certain interpolation segments in machining. On-line implementation results show that the proposed approach greatly improves positioning accuracy of computer numerical control (CNC) machine tools.
To reduce mechanical vibrations induced by big errors compensation, a new software compensation method based on an improved digital differential analyzer （DDA） interpolator for static and quasi-static errors of machine tools is proposed. Based on principle of traditional DDA interpolator, a DDA interpolator is divided into command generator and command analyzer. There are three types of errors, considering the difference of positions between compensation points and interpolation segments. According to the classification, errors are distributed evenly in data processing and compensated to certain interpolation segments in machining. On-line implementation results show that the proposed approach greatly improves positioning accuracy of computer numerical control （CNC） machine tools.
基金
the Special Project for Key Mechatronic Equipment of Zhejiang Province (No. 2006C11067)
the Science&Technology Project of Zhejiang Province (No. 2005E10049), China
关键词
机械加工
静电学
数字微分分析
误差
Static and quasi-static errors, Positioning and machining accuracy, Digital differential analyzer （DDA） interoolator
