Geometric Accuracy Modeling of Precision Machine Tools Based on ey Characteristics
High precision machine tools require a high machining and assembly accuracy,usually of a few nanometers.In this paper,kinematic errors are analyzed by using lower numbered body array.Then,position and posture transformationsareexpressed by adopting homogeneous transformation matrix.Finallya multi-layered geometric variation propagationmodel based on key characteristics is built,which includes machining space volume error,kinematic error of machine tools and geometric error of parts.This modeling method can be applied to any machine toolsof topological structure of series connection,revealing the mapping relation between those three types of errors.
Error modeling tolerance design variation propagation machine-tool assembly
LIU Yiying GUO Junkang HONG Jun LIU Zhigang
B302,Xian Jiaotong University,99 Yanxiang Road,Xian,Shaanxi,China
国际会议
第十七届国际制造会议(The 17th International Manufacturing Conference in China)(IMCC 2017))
深圳
英文
1-12
2017-11-23（万方平台首次上网日期，不代表论文的发表时间）