转台分度误差检测及补偿技术的研究  

Study on Verification and Compensation of Indexing Errors for Turntable

作　　者：郭敬滨[1] 曹红艳[1] 王克新 齐永岳[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]温州市计量技术研究院,温州325000

出　　处：《中国机械工程》2014年第7期895-899,共5页China Mechanical Engineering

基　　金：天津市自然科学基金资助项目(10JCYBJC06600)

摘　　要：采用0.3″的精密多齿分度台与平面反射镜组合,对转台分度误差进行检测。针对多齿分度台安装倾斜对检测结果产生影响的问题,提出了利用双轴光电自准直仪Y轴读数补偿调整误差的方法。根据转台分度误差是由多次谐波叠加的特点,采用谐波分析的方法对测量得到的离散数据进行拟合处理,得到用于转台分度误差补偿的连续曲线模型。对分度误差为17.82″的转台进行实测和误差补偿,补偿后转台的最大分度误差为2″。A multi-tooth indexing table with 0.3＂ precision and plane mirror were selected as the angular standard, to check the indexing errors of turntable. With regard to the impact of the installa- tion tilt of multi-tooth indexing table on the test results,a compensation method was proposed. Ac- cording to the characteristics that the indexing errors of turntable were superimposed by the multiple harmonic waves, the harmonic analysis method was used to fit the measured data. The fitting curve was applied to compensate index errors. After testing and compensating,the indexing precision of the turntable is improved from 17.82＂ to 2＂, which verifies the validity and feasibility of measurement methods and the compensation model.

关 键 词：分度误差检测 调整误差 谐波分析 误差补偿 

分 类 号：TB922[一般工业技术—计量学]