| 摘要 |
PROBLEM TO BE SOLVED: To provide a variable throttle type hydrostatic bearing having a diaphragm type variable throttle which can easily obtain desired attenuation performance by arranging an attenuation mechanism at a desired position.SOLUTION: A variable throttle type hydrostatic bearing which comprises a diaphragm 33 in which a face orthogonal to its own thickness direction confronts a protrusion 31b at a prescribed interval, and a flow passage 31c communicating with a hydrostatic pocket 2a at the protrusion 31b, and adjusts a throttle amount by an opening of a clearance between the diaphragm 33 and the protrusion 31b. The variable throttle type hydrostatic bearing also comprises: a piston 34 whose one end contacts with a rear surface of the face confronting the protrusion 31b of the diaphragm 33; a cylinder 32b whose one end is closed, and which slidably holds the piston 34, and constitutes a fluid chamber 32c together with the piston 34; and a coil spring 35 which presses the other end of the piston 34, and is accommodated in the fluid chamber 32c.SELECTED DRAWING: Figure 3 |
