Gas bearing for guiding relative movement of precision machine p

Details Gas bearing for guiding relative movement of precision machine p Gas bearing for guiding relative movement of precision machine p

1987-10-14

1989-02-07

Stodola, Daniel P.

Bearings

Linear bearing

Fluid bearing

384100, F16C 3206

Patent

active

048027740

ABSTRACT:
In a precision machine, such as a coordinate measuring machine or a machine tool in which a carriage rides along a rail, a gas bearing for applying a constant preload force to a bearing shoe over a range of relative movement between said bearing shoe and the carriage to accommodate imperfections and non-parallelism in the rail. The constant preload force is provided by a disc spring, which may be a Belleville spring. A preferred spring has a free height to thickness ratio in the range of from about 1.35:1 to about 1.6:1. The gas bearing of this invention is used in opposed relation with another gas bearing.

REFERENCES:
patent: 3578827 (1971-05-01), Smith
patent: 3717392 (1973-02-01), Ennis
patent: 3744858 (1973-07-01), Weichsel
patent: 4174136 (1979-11-01), Hallstedt
patent: 4378134 (1983-03-01), Eddy
patent: 4643590 (1987-02-01), Olasz

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