机械科学与技术2017，Vol.36Issue(11)：1734-1739,6.DOI:10.13433/j.cnki.1003-8728.2017.1116
面向数控机床装配精度预测的元动作误差建模技术
Assembly Precision Prediction Method of Numerical Control Machine Tools based on Meta-action
摘要
Abstract
Assembly is a key of product quality assurance,and assembly precision is an important measurement index in assembling process.There were four steps to predict assembly precision of NC machine.Firstly,the functional decomposition approach "function-motion-action" was used to analyze its assembly process structurally,then it was decomposed down into basic action,i.e.meta-action.Secondly,in order to express the assembly relationship between the assembly units and the logical relationship between the geometry features,the frame chart of assembly errors propagation via meta-action was constructed.Thirdly,the multi-level model for state space was built to predict final assembly precision of NC machine on the basis of the propagation and accumulation of geometry errors.Finally,the effectiveness of multi-level model for state space was demonstrated by an example of Z axis feed function assembly unit from a certain machining center.关键词
FMA结构化分解/元动作/装配精度/状态空间Key words
FMA functional decomposition/meta-action/assembly errors/model for state space分类
机械制造引用本文复制引用
孙云艳,刘英,冉琰,周庆法..面向数控机床装配精度预测的元动作误差建模技术[J].机械科学与技术,2017,36(11):1734-1739,6.基金项目
国家自然科学基金项目(51575070)与国家科技重大专项项目(2014ZX04001-031,2015ZX04003003-07)资助 （51575070）
