Cooling system of rotary fluid pressure cylinder for chucking in

Details Cooling system of rotary fluid pressure cylinder for chucking in Cooling system of rotary fluid pressure cylinder for chucking in

1980-04-28

1985-06-18

Davis, Jr., Albert W.

Heat exchange

Structural installation

92106, 92144, 74606A, F24H 300

Patent

active

045236321

ABSTRACT:
This invention relates to a cooling mechanism of a rotary hydraulic cylinder for chucking operation of machine tools. In a rotary hydraulic cylinder which consist of a rotor member having a reciprocable piston inside and in which working oil is fed to the piston in said rotor member, many fins are mounted, parallel to the movements of said piston rod, on the outer periphery of said working oil supplying member, and a cylinder-like cover whose side facing to said rotor member is folded inside to make a flange, is mounted at the edge, of said fins, facing said rotor, so that it may partially enclose the outer peripheral surface of said rotor member. The side of the rotor member enclosed by said cylinder-like cover, of said oil supplying member is provided with a rotary fan which rotates together with said roller member, thereby causing an air inlet opening of a fixed clearance between said cover and the rotary fan to be formed. Therefore, air flow is then produced through the outer peripheral surface of said rotor member toward said working oil supplying member as said rotor member starts to rotate. Said air flow can effectively cool the working oil and the whole chucking mechanism and thereby protect them from bad influences which may be caused by temperature rise.

REFERENCES:
patent: 1564742 (1925-12-01), Acker
patent: 2147391 (1939-02-01), Acker
patent: 2756614 (1956-07-01), Kobayashi
patent: 2835227 (1958-05-01), Gamet
patent: 3285328 (1966-11-01), Woodward
patent: 3417636 (1968-12-01), Randolph

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