回转运动坐标定位精度的检测与误差补偿模型  

Positioning Accuracy and Errors Compensation Model for Coordinates of Rotational Motion

作　　者：张立新[1] 黄玉美[1] 高峰[1] 何根良[1] 乔雁龙[1] 

机构地区：[1]西安理工大学机械与精密仪器工程学院,数控机床及机械制造装备集成教育部重点实验室,陕西西安710048

出　　处：《计量学报》2007年第4期317-320,共4页Acta Metrologica Sinica

基　　金：教育部"高等学校博士学科点专项科研基金"(20050700007);陕西省重大科技创新项目计划(2005ZKC01-01)

摘　　要：在对回转运动坐标定位精度的干涉测量原理和方法进行深入研究的基础上,采用激光干涉法检测混联机床C轴的定位精度和重复定位精度,并做出了基于测量数据的混联机床C轴单向均位偏差特性曲线,推导出了C轴顺、逆时针旋转定位误差数学模型。利用最小二乘法拟合得到了机床回转运动坐标目标位置的均值误差补偿数学模型,提出了一种回转运动坐标定位精度的激光干涉测量方法和误差补偿模型的建模方法。Based on the deep study on the principles and methods of laser interferometry for positioning accuracy of coordinates of rotational motion, the setting accuracy and resetting accuracy of C axis on hybrid NC machine tools is inspected and the characteristic curve of unilateral mean position deviation for C axis with measured data is plotted, by which the mathematical model of rotational positioning error for C axis in clockwise rotation and counterclockwise rotation is derived. The average errors compensation model of target location coordinates of rotational motion on hybrid NC machine is obtained using least squares fitting. Then a laser interferometry of setting accuracy for coordinates of rotational motion and a modeling approach on error compensation are proposed and the setting accuracy of C axis is compensated.

关 键 词：计量学 干涉测量 混联机床 C轴精度 补偿模型 

分 类 号：TB92[一般工业技术—计量学]