| 摘要 |
PURPOSE:To heighten the straightness of the motion of a slider movably supported around a rectangular shaft, by changing the cross-sectional area of each air pocket of the sliding surface of the slider in the direction of its sliding. CONSTITUTION:A restrained-type slide unit comprises a guide 1 shaped as a rectangular shaft and provided with exhaust grooves 3 on the longitudinal corners, and a slider 2 which extends around the guide 1 and slides while being guided by the surface of the guide. An air supply passage 11 is provided in the guide 1 so that the air supply ports 12a, 12b of the downstream end of the passage are opened in the surface of the guide. The sliding surface 4 of the slider 2 is provided with deep grooves (air pockets) 13a, 13b parallel with the direction of the sliding. The width and depth of the air pocket 13a, which receives load through the slider 2, are gradually decreased toward both the ends in the direction of the sliding. The width and depth of the other air pocket 13b, which does not receive the load, are gradually increased toward both the ends in the direction of the sliding. |
