三次元測定機の座標データ処理に関する研究 : 原点補正を必要としない複数プローブの座標データ処理法

概要

論文の詳細を見る
It is often necessary to utilize more than two probes in measuring three-dimensional (3-D) shapes by means of a 3-D coordinate measuring machine. Accuracy of measurement, especially of complicated shapes, can be improved by using multiple probes, because of the wide range of measured data. In the case that more than two probes are used, calibration of each probe must be performed to correct the zero position of the scale. In this paper, a new method for processing data measured by multiple probes is proposed. Two kinds of parameter related to shape and offset vector of a probe are involved in an observation equation. The parameters can be determined simultaneously by solving a set of observation equations for both standard probe and offset probe. The efficiency of the measurement by multiple probes is not affected because probe calibration and data correction are not essential in the proposed method. The simultaneous processing method is applied to experimental data. The most probable values and the standard deviations of the parameters are calculated by the least squares method. Results show that measurement accuracy of the method is almost the same as that of a conventional calibration method.
一般社団法人日本機械学会の論文
1997-02-25