机械与电子2017，Vol.35Issue(2)：45-50,6.
基于球杆仪位姿的机床回转台几何误差辨识研究
Research on Geometrical Error Identification of Machine Tool Rotary Table Based on DBB Position
摘要
Abstract
In order to decouple the coupling errors caused by the linkage of moving axis when measuring the geometric errors of the rotary axis,this paper proposed a new method of error identification based on the actual position of the Double Ball-bar(DBB).With the rotary table of a CFXYZA type of five-axis CNC machine tool as the measuring object,a combined measurement model was designed to measure the directions of X,Y,and Z of the DBB.Six groups of ball-bar's length variations were obtained by changing the installation position and height of DBB's center base on the rotary table;and then,the relational expression of the geometric errors and the length variations was deduced based on the homogeneous transformation theory,thus six geometric errors of the rotary table were identified.The measurement test and the identification results showed that the proposed method could not only improve the identification accuracy,but also eliminate the coupling errors of the moving axis,which is of reference significance for the geometric error measurement and identification of the the same type of CNC machine tools.关键词
误差辨识/回转台/几何误差/实际位姿Key words
error identification/rotary table/geometric errors/actual position分类
机械制造引用本文复制引用
梁莹莹,梁睿君,王庆伦,黄江峰..基于球杆仪位姿的机床回转台几何误差辨识研究[J].机械与电子,2017,35(2):45-50,6.基金项目
国家自然科学基金资助项目(51575272) （51575272）
