摘要
温度变化是引起测量误差的一个重要因素,对于带立式转台的四轴测量机来说,温度变化会造成转台轴线相对于测量机零点的位置变化,即将之前的转台坐标系进行了平移,这样就给测量结果带来了误差。为了测量计算转台坐标系发生的偏移,本文对比了旋转转台多角度测棒法和固定转台单角度测棒法两种方法,最终确定了利用非接触测头在固定转台不旋转的情况下通过标准棒测轴线法来获得转台坐标系偏移,进而实现对测量数据的温度补偿,从而提高测量精度。
The temperature change is an important factor to cause measurement error.For the four-axis noncontact coordinate measuring machine with vertical rotary table,it will make the location of the rotary table axial line to change with respect to the original point of measuring machine.So the coordinate system based on the rotary table will be translated,and this will bring the measurement error.In order to measure the offset of the coordinate system,the method of measuring cylinder for table rotating with multi angle and the method of measuring cylinder for table not rotating with single angle are compared.At last,the optical probe method to measure the axial line of standard cylinder without the rotary table rotating is used.Then the measuring data can be compensated to improve the accuracy of measurement.
作者
王磊
唐纯纯
胡成海
鲍晨兴
Wang Lei;Tang Chunchun;Hu Chenghai;Bao Chenxing(Aviation Key Laboratory of Science and Technology on Precision Manufacturing Technology,Beijing Precision Engineering Institute for Aircraft Industry,Beijing 100076,China)
出处
《机械科学与技术》
CSCD
北大核心
2019年第5期749-753,共5页
Mechanical Science and Technology for Aerospace Engineering
基金
航空工业集团创新基金项目(2013F30327)资助
关键词
四轴非接触测量机
温度变化
坐标系偏移
标准棒测轴线法
four-axis noncontact coordinate measuring machine
temperature change
coordinate system shift
measurement of axial line of standard cylinder
