現場環境における三次元測定機の高度化に関する研究（第1報）

—温度ドリフトの評価および補正—

抄録

In recent years, the CMM (Coordinate Measuring Machine) quickly has been spreading in the manufacturing industry. With this phenomenon, the environmental condition and installation site of CMMs has been changed from the temperature control room to the workshop environment and the production line without air conditioning. However, even in severe environment the demand to high accuracy measurements by CMM has been enhancing still more. Therefore, the methods to evaluate and realize the high accuracy measurements by CMM in workshop environment have been investigated. In this paper, we clarify the difference of thermal drift and conventional temperature correction in thermal errors of length and position measurement, and propose the simple model of thermal drift and correction method. Additionally the thermal drift of CMM in workshop environment is tested and corrected experimentally. From these results, we confirmed the availability of the proposed methods.