摘要
目的:提出一种六方轴直线度误差评定方法,评定结果应满足要求。方法:通过位移传感器测量六方轴各外表面的挠度偏移情况,将采集数据进行坐标变换,并经由多项式拟合获得整根六方轴的中心线偏移情况,最后通过对横坐标的计算得出六方轴直线度误差。结果:通过与三坐标测量仪试验结果的对比分析,计算相对误差小于5%,验证了该方法的有效性与可行性。结论:提供了一种新的六方轴直线度误差评定方法。
Aims:This paper introduces an evaluation method of hexagonal axis straightness error based on polynomial curve fitting,which can simulate hexagonal axis centerline deviation by polynomial fitting and calculate hexagonal axis straightness error by centerline deviation data and reference axis setting.Methods:A displacement sensor was used to measure the offset of each side of the hexagonal axis;and the collected data was transmitted to the computer for data preprocessing.The centerline offset of the whole hexagonal axis was obtained by polynomial fitting.Finally,the curve was synthesized and the straightness error of the hexagonal axis was calculated.Results:The relative error of this method compared with CMM was less than 5%.Conclusions:The method can be used for hexagonal axis straightness error evaluation.
作者
周娟
殷浩林
黄宇杭
ZHOU Juan;YIN Haolin;HUANG Yuhang(College of Quality and Safety Engineering,China Jiliang University,Hangzhou 310018,China)
出处
《中国计量大学学报》
2021年第4期480-488,523,共10页
Journal of China University of Metrology
基金
浙江省基础公益研究计划项目(No.LGG18E050008)。
关键词
多项式拟合
坐标转换
六方轴
直线度
polynomial curve fitting
coordinate transformation
hexagonal axis
straightness
