| 摘要 |
PROBLEM TO BE SOLVED: To provide a hydrostatic air bearing type straight advance guide improving bearing performance and lowering manufacturing costs, etc. SOLUTION: This hydrostatic air bearing 3 is constituted by two identical bearing blocks 5 having a nearly L-shape section. Pairs of bearing pad loading concavities 5a, 5b facing to a slider axis 1 are formed at right angles to each other, in the bearing blocks 5. An air communicating hole 23 is formed in the bearing blocks 5 in order to communicate respective compressed air supplying ports with the respective bearing pad loading concavities 5a, 5b. Bearing pads 21 forming diaphragm parts are fitted into the respective bearing pad loading concavities 5a, 5b in the axial same positions. The bearing pads 21 are supplied with compressed air from a compressed air supplying tube through the air communicating hole 23. The prescribed clearances are formed between the slider axis 1 and the respective bearing pads 21 by the compressed air blowing out from the respective bearing pads 21, to float and support the slider axis 1 in the center of the hydrostatic air bearing 3.
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