一种大尺寸孔轴线非接触测量方法研究  

Research on Non-Contact Measurement Method for Large Hole Axis

作　　者：孟旭[1] 张锁怀[2] 万武勇[1] 

机构地区：[1]陕西科技大学机电工程学院,陕西西安710021 [2]上海应用技术学院机械工程学院,上海201418

出　　处：《机械设计与制造》2013年第1期92-94,共3页Machinery Design & Manufacture

基　　金：上海市信息化发展专项资助(201001007)

摘　　要：为了快速,精确的获取大尺寸孔的轴线空间位置,实现轴孔组合零件的高精度装配,基于激光三角位移测量原理,提出了一种针对大尺寸孔轴线的非接触精密测量方法,据此设计出一种光学探头非接触测量系统,建立了对应的数学模型,数据处理上借助MATLAB最小二乘法实现对扫描轮廓曲线、孔中心轴线的拟合,最终得出被测孔轴线的空间位置方程,同时对测量系统进行了误差分析与补偿,该方法可以快速,高精度的获取大内径孔轴线空间位置,为后续轴-孔零件的高精度装配提供装配基准。To quickly get the spatial location of the large hole axis and meet the peg-in-hole assembly requirement,it presented a non-contact precise measurement method based on laser triangulation measuring principle.According to this method,a non-contact measurement system was designed,and the measuring mathematics model was founded.fitting curve of the scanning profile and the centric line space equation are obtained by least squares method.Besides,the error of the measurement system are analyzed and corrected.As assembly benchmark of subsequent assembly,the centric line position of large scale hole parts can be quickly obtained by the method.

关 键 词：激光三角 轴线 非接触测量 最小二乘法 

分 类 号：TH16[机械工程—机械制造及自动化] TG8[金属学及工艺—公差测量技术]