MOVEMENT GUIDING DEVICE AND METHOD OF LUBRICATING THE SAME

摘要

A movement guiding device capable of maintaining a lubrication performance over a long period by lubricating the rolling surfaces of rolling elements by using a method completely different from a conventional lubrication method and a method of lubricating the movement guiding device. The movement guiding device for vacuum environment comprises a rail member (1) having a rolling element rolling part (1a), a moving member (2) having rolling element circulation passages including loaded rolling element rolling parts (2a) facing the rolling element rolling part (1a) and movable relative to the rail member (1), a plurality of rolling elements (3) arranged in the rolling element circulation passage, and a lubricating oil storage member fitted to the moving member (2) without coming into contact with the rail member (1) and storing a lubricating oil. The lubricating oil storage member is exposed to a space between the rail member (1) and the moving member. The vaporized lubricating oil reaches the rolling element rolling part (1a), the loaded rolling element rolling parts (2a), and the rolling elements (3) for lubricating these parts.