抄録
An instrument capable of measuring arbitrary dynamic NC tool paths in a three-dimensional space has been developed. This paper describes the estimation method for 23 error parameters concerning the link length errors, inclination of link axises and bearings. The estimated errors parameters have been applied to tool path trajectories which are calculated from rotary encoders output angles. The results show significant accuracy improvement. The fact that the measurement of a machine motion in 125 square tool path is possible with an error of 8μm error, show the validity of the proposed measurement device and that of the error parameters estimation method.
