Servostatic bearing system with variable stiffness

Details Servostatic bearing system with variable stiffness Servostatic bearing system with variable stiffness

1976-09-29

1978-03-21

Blix, Trygve M.

Cutlery

308 3A, 308 5R, F16C 3206

Patent

active

040800091

ABSTRACT:
The invention provides a hydraulically sealed, variable stiffness servostatic bearing system for use in machine tools and between any other loaded surfaces. Bearing pads operate between two relatively movable surfaces. A pilot valve senses changes in the bearing surface spacing and communicates by pressure variations with a diaphragm controlled restrictor valve. The diaphragm controlled restrictor valve apportions proper amounts of hydraulic fluid at proper pressure to the bearing pads. The combination results in a bearing system the stiffness of which is adjustable from positive to infinite to negative by the source hydraulic pressure to the diaphragm restrictor valve. A lift bladder and a modular bearing pad assembly to facilitate easy and quick installation and removal of bearing pads are also described.

REFERENCES:
patent: 3260162 (1966-07-01), Atherton
patent: 3407012 (1968-10-01), Siebers
patent: 3442560 (1969-05-01), DeGast
patent: 3717392 (1973-02-01), Ennis

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