KINEMATICAL CALIBRATION OF ARTICULATED CMM USINGMULTIPLE SIMPLE ARTIFACTS

摘要

Articulated Coordinate Measuring Machines(CMMs) are widely used to measure a large scale and/or complicated workpiece, as it is very flexible. The kinematical calibration of the articulated CMM is usually performed using some 3D artifacts. However, 3D artifact is too large and difficult to be handled. So, we tried to use a simple artifact several times and to get the equivalent calibration result to 3D artifact. In this paper, the principle of using multiple simple artifacts is presented. The kinematical calibration using some typical simple artifacts and/or the combination of those are simulated. In this simulation, the calibration, which was performed with the ball bar in four different locations and orientations, was equivalent to the calibration with 3D artifact. Finally, the experiment of calibration with the ball bar is performed.