工作機械案内面のロストモーション特性補償による真円輪郭精度の向上(機械要素,潤滑,工作,生産管理など)

抄録

This paper proposes a new compensation method for lost-motion characteristics in the NC machine tools employing slide-way. Lost-motion is a major disturbance to motion accuracy of the NC machine tools. In order to solve such problems, many compensation methods for lost-motion have been developed to improve them. However, these conventional methods have not been able to compensate some behaviors. In this paper, lost-motion characteristics are measured under various sliding speed and various approach distance. Table lift caused by dynamic pressure of lubricant oil is measured at the same conditions. From these results, experimental model as a function of decrement of lost-motion and table lift is proposed. A new compensation method based on experimental model is applied to circular motion. It is confirmed that a new compensation method improves circularity.