| 摘要 |
An aerostatic bearing with an adjustable stabilizing structure suitable to be applied to a linear sliding rail of a precision test instrument or a precision tool machine, etc., comprises a bearing body with a round or other shaped planes. The plane is furnished with a pocket, a plurality of radial grooves, and a ring-shaped grooves, being in communication with one another. The outer edge of the bearing body is provides with an air intake extended, through an intake passsage, to an area nearing a pocket. The intake passage is in communication with the pocket through a first orifice. A spacing member with a second orifice is movably mounted in the intake passage so as to form a cavity between the two orifices. When the position of the spacing member is changed, the volume of the cavity is varied so as to adjust the bearing to a stable condition; furtherly, the second orifice is designed to be operated by a needle valve, therefore, the volume speed of the intake air through the second orifice can be adjusted to achieve for the best result. |
