Measuring Apparatus for Motion Accuracy of NC Machine Tools Using Links and Rotary Encoders

摘要

A newly developed motion accuracy measuring instrument for NC machine tools, equipped with rotary encoders, has been developed. The measuring principles, instrument configuration, and basic characteristics of the system were described. The results are summarized as follows: (1) In this research, we produced new measuring instrument, and showed its principle, construction, evaluation of the fundamental characteristic, identification of the error parameters and revision of the measurement data using a nonlinear least square method. (2) Newly proposed instrument can be applied for motion accuracy measurements, for example, multi-axis NC machine tools, parallel link machine tools and industrial robots.