Probe Error Analysis of Articulated Arm Coordinate Measuring Machine

摘要

Researched on the probe’s diameter error of the Articulated Arm Coordinate Measuring Machine (AACMM) in themeasuring process. Based on the analysis of the influence of the error source on the accuracy of the probe, the influence ofthe contact force on the measuring diameter of the probe was analyzed emphatically. It was proposed to use the CoordinateMeasuring Machine (CMM) to identify the probe diameter error of the AACMM and apply the least square method tocompensate the probe diameter error. The results show that the research method has certain feasibility. The maximum errorof the length measurement is reduced by about 47 um. The average error is reduced from 0.0315 mm to 0.0046 mm, whichimproved the measurement accuracy of the AACMM.