Theoretical analysis and verification of uncertainty of measurement on a cantilever coordinate measuring machine  

悬臂式测量机测量不确定度分析与验证（英文）

作　　者：ZHANG Hai-tao LIU Shu-gui LI Xing-hua SU Zhi-kun 张海涛;刘书桂;李杏华;苏智琨(天津大学精密测试技术及仪器国家重点实验室,天津300072;天津大学机械工程学院,天津300072)

机构地区：[1]National Key Laboratory of Precision Testing Techniques and Instrument, Tianjin University, Tianjin 300072, China [2]School of Mechanical Engineering, Tianjin University, Tianjin 300072, China

出　　处：《Journal of Measurement Science and Instrumentation》2017年第4期314-320,共7页测试科学与仪器（英文版）

基　　金：National Natural Science Foundation of China(No.51375338)

摘　　要：A cantilever coordinate measuring machine(CCMM)is proposed according to the in-situ measurement requirement of workpieces with complex structures limited by the finite space of the5-axes computerized numerical control(CNC)processing site.Factors affecting uncertainty of measurement(UM)are classified and analyzed on the basis of uncertainty evaluation criteria,and the estimation technique of UM for measuring systems is presented.UM of the CCMM is estimated from the factors such as temperature,error motions as well as the mechanism deformations.Measurement results show that the actual measurement error is smaller than that of measurement requirement.

关 键 词：cantilever coordinate measuring machine (CCMM) structure design computerized numerical control machine estimation of uncertainty of measurement 

分 类 号：TG659[金属学及工艺—金属切削加工及机床] TH72[机械工程—仪器科学与技术]