中文摘要：

为了实现对关节臂式坐标测量机垂直度误差的直接标定,提出两点对称法的标定方法。首先,建立了关节臂式坐标测量机的数学模型,得出运动学方程。其次,分析了关节臂式坐标测量机垂直度误差的标定原理,推导出垂直度误差的求解公式。最后,在ROMER Infinite 2.0型关节臂式坐标测量机上进行了实验,利用测量标准球的实验对标定结果的准确性进行了验证。通过标定可以提高关节臂式坐标测量机的精度,使关节臂式坐标测量机测量结果的相对误差由原来的0.384%减小到0.225%。

英文摘要：

At present, the articulated arm coordinate measuring machine is playing more and more important role in industrial production. But due to its special structure, the small change of the joint angle can cause large measurement error. So the calibration of the angle variable error can effectively improve the measurement accuracy of the articulated arm coordinate measuring machine. In order to realize the direct calibration of the articulated arm coordinate measuring machine＇ s perpendicularity error, the two symmetric point method was put forward. Firstly, the mathematical model of the articulated arm coordinate measuring machine was established and the kinematics equation was obtained. Secondly, the perpendicularity error calibration principle was analyzed and the perpendicularity error calculation formula was obtained. Finally, with the help of the mechanical fixture, the experiments were carried out on the ROMER Infinite 2.0 articulated arm coordinate measuring machine. The accuracy of the calibration results was verified by the measurement experiment of the standard ball. This method can make the measuring result of the articulated arm coordinate measuring machine relative error reduce from 0. 384% to 0. 225%. The calibration method can improve the measurement accuracy of the articulated arm coordinate measuring machine. This research laid a good foundation for the further research of the measurement accuracy of the articulated arm coordinate measuring machine.