光学精密工程2025，Vol.33Issue(11)：1750-1760,11.DOI:10.37188/OPE.20253311.1750
基于双特征槽工件的旋转轴几何误差辨识
Geometric error identification of rotary axes based on dual-feature grooved workpiece
摘要
Abstract
A method for identifying position-dependent geometric errors(PDGEs)of rotary axes in five-axis machine tools is proposed,employing dual-feature grooves.This approach entails machining two dis-tinct types of feature grooves on a cubic workpiece and implementing four measurement modes to facilitate high-precision identification of rotary axis geometric errors.Unlike conventional feature workpieces,the proposed design does not impose stringent requirements on groove depth and length,thereby substantially reducing material removal while mitigating the effects of cutting forces,thermal deformation,and linear axis errors on measurement outcomes.Furthermore,the identification model is designed to amplify the in-fluence of angular error motions,diminishing the impact of measurement uncertainty on identification accu-racy and enhancing result reliability.Comparative experiments with the T-block identification method con-firm the method's accuracy,demonstrating a maximum deviation of 2.7 μm for displacement error identifi-cation and-2.3″ for angular error identification,with an average consistency of 93.6%between the two methods.关键词
五轴机床/旋转轴/几何误差/误差辨识/特征工件/在机测量Key words
five-axis machine tool/rotary axis/geometric error/error identification/feature-embedded workpiece/on machine measurement分类
机械制造引用本文复制引用
张奥,项四通,杨建国..基于双特征槽工件的旋转轴几何误差辨识[J].光学精密工程,2025,33(11):1750-1760,11.基金项目
国家自然科学基金面上项目(No.52175470) （No.52175470）
宁波市自然科学基金重点项目(No.2022J074) （No.2022J074）
