3次元測定機の不確かさ推定に関する研究(第1報) : 多関節型3次元測定機の機構パラメータの算出と不確かさ推定

概要

論文の詳細を見る
Recently, the coordinate measuring machines (CMM) are widely used for a large measuring field. In general, CMM indicates Cartesian type of CMM (C-CMM). But another type of CMM exists, which is called an articulated coordinate measuring machine (A-CMM). The A-CMM is more flexible and useful than C-MM, because it has more degrees of freedom than C-CMM. However, it is difficult to keep the traceablity of it because the calibration of A-CMM is performed by the manufacturer's own method. Then, we propose the Estimation Method of Uncertainty of A-CMM. At first, kinematical parameter of A-CMM is described in D-H notation and kinematical parameters are estimated. Secondly, the kinematical parameters are calibrated using an artifact. We used 3D ball plate. We measure the artifact in five different locations and orientations. 45 points are measured and the parameters are determined in each location and orientation. The parameter assessment was performed. The result is better than the original accuracy. The uncertainty budget of balancer of A-CMM and exchanging the stylus are investigated.
公益社団法人精密工学会の論文
2003-06-05