High speed interpolation for micro-line trajectory and adaptive real-time look-ahead scheme in CNC machining

作     者：ZHANG LiXian SUN RuiYong GAO XiaoShan LI HongBo 

作者机构：Key Laboratory of Mathematics Mechanization AMSS Chinese Academy of Sciences Beijing 100190 China Graduate University of Chinese Academy of Sciences Beijing 100049 China 

出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)

年 卷 期：2011年第54卷第6期

页      面：1481-1495页

核心收录：

学科分类：080202[工学-机械电子工程] 08[工学] 0835[工学-软件工程] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：supported by the National Key Basic Research Project of China (Grant Nos 2011CB302400) the National Natural Science Foundation of China (Grant Nos 60821002, 10871195, 10925105) Major National S&T Project "Advanced CNC Systems" CAS Project "MM Methods for Advanced CNC Systems" 

主　　题：CNC micro-line segment multi-period turning look-ahead scheme real-time interpolation feedrate override 

摘      要：CNC machining plays an important role in mechanical manufacturing.A key issue is to improve the machining feedrate while keeping the machining precision and satisfying the acceleration constraints of the CNC *** the consecutive micro-line segments interpolation,the velocities at the junction of two segments are the bottlenecks for the machining *** paper proposes a multi-period turning method to improve the feedrate at the junctions using the linear acceleration and deceleration mode,which utilizes the maximal acceleration capabilities of the NC machine while satisfying the machining precision.A new and more efficient look-ahead method and a feedrate override method are also proposed to boast the global machining *** proposed algorithm has been implemented on Blue Sky NC System,and experimented in real material *** with several existing algorithms,the current algorithm can improve the manufacturing time ranging from 50% to 180%,depending on the machining parameters,and also results in better machining *** addition,the algorithm also satisfies the need of real-time interpolation.