非正交坐标测量机下REVO测头参数及误差标定  

Calibration Techniques of REVO Probe Head in Non-orthogonal Coordinate Measuring Machine

作　　者：张海涛[1,2] 刘书桂[1] 李杏华[1] 苏智琨[1] 

机构地区：[1]天津大学精密测试技术及仪器国家重点实验室,天津300072 [2]天津大学机械工程学院,天津300072

出　　处：《湖南大学学报（自然科学版）》2017年第10期50-54,共5页Journal of Hunan University:Natural Sciences

基　　金：国家自然科学基金资助项目(51375338)~~

摘　　要：针对基于正交式坐标测量机设计和应用的REVO五轴测量系统,在非正交式坐标测量机下应用不能实现自标定的问题,基于对称和反转原理,提出了测头参数和误差项的一系列单项标定方法,通过测量机单轴小范围辅助运动测量量块,实现了非正交坐标测量机下REVO测头的参数和误差标定,避免了大范围运动测量机主轴所产生的运动误差给标定结果带来的影响.通过实验验证了所提出标定方法的精确性和有效性,经过标定和误差补偿后,平均测量误差从18.1μm降低到了0.8μm.实验结果表明:所提出的方法操作简便,精确度高,具有很好的溯源性.In order to solve the calibration problem of the application of REVO 5-axis system, which was designed to be applied in the orthogonal coordinate measuring machines （CMMs） and non-orthogonal CMM,some techniques based on symmetrical and reversal principle for calibrating the parameter5 and error items of REVO probe head were proposed and discussed in detail. The calibration of the parameters and error items of REVO probe head in the non-orthogonal CMM was realized only by measuring some gauge blocks with one CMM axis moving in a short distance, which avoided the introduced error due to the motion errors of the CMM axes moving in a large scale. The accuracy and effectiveness of the calibration techniques was proved by experiments and practice. After the calibration and error compensation, the average measurement error was reduced to 0.8 μm from 18.1 μm. The results show that the proposed methods are easy to operate and be traced to the source, and wit.h high accuracy.

关 键 词：非正交式 坐标测量机 REVO测头 参数与误差项 标定 

分 类 号：TH721[机械工程—仪器科学与技术]