Error Estimation for LaserTRACER Spatial Position Determination

10.6567/IFToMM.14TH.WC.OS20.015

Hau-Wei Lee；Po-Er Hsu；Shan-Peng Pan；Hua-Chung Liou

LaserTRACER ； spatial position ； error estimation

Proceedings of the 14th IFToMM World Congress

14th-6（2015 / 11 / 11）

117 - 121

英文

Auto-tracking laser interferometers are widely used to calculate the position accuracy of industrial robots, coordinate measuring machines (CMMs) and machine tools. LaserTRACER which is one of them is designed for measuring and compensating the geometric errors of CMMs and machine tools. The measurement uncertainty of LaserTRACER is 0.2 μm+0.3 μm/m×L, and the simplified measurement process according to ISO 230-2/-6 or ISO 10360-2 can enhance the efficiency of the test in three axes. The spatial position determination is the fundamental algorithm while calibrating the test machine. This paper aims to estimate the error of LaserTRACER spatial position determination in different levels of positioning errors which is performed by the CMM to analyze its contribution to the measurement uncertainty. In addition, the set up strategy of LaserTRACER is also disclosed in the paper. From the experiment result, it shows that there is no contribution of the positioning errors while the measurement procedure follows the ISO standards.