Bearings – Linear bearing – Fluid bearing
Patent
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
Brown & Sharpe Manfacturing Co.
Hannon Thomas R.
Stodola Daniel P.
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