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US 5,596,899 AGranted
Mill housings for cluster mills
AssigneeT. Sendzimir, Inc.
InventorsMichael G. Sendzimir, John W. Turley
Life of this patent
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AssigneeT. Sendzimir, Inc.
InventorsMichael G. Sendzimir, John W. Turley
Estimating the term…
A two-part housing assembly for a cluster mill. The housing assembly has substantially the same size, form and structure as a monobloc housing, but is divided along a horizontal plane located at or close to its horizontal center line into upper and lower mill housings each provided with a roll cavity and a roll cluster therein. The gap between the work rolls of the roll clusters is adjusted by symmetrical equal and opposite movement of the upper and lower mill housings achieved by four identical screws, one located in each corner of the mill housing assembly. Each screw has two threaded portions of opposite hand, one threaded portion engaging a threaded nut of opposite hand non-rotatively mounted in a recess in the upper mill housing and the other threaded screw portion engaging a threaded nut of appropriate hand non-rotatively mounted in a recess in the lower mill housing. Each screw supports the upper and lower mill housings. A jack for each screw is provided in the mill base to support and rotate that screw. The upper and lower mill housings are adjustably prestressed together, at a spacing determined by the screws, by a pair of tie rods affixed to the piston of a hydraulic cylinder located at each corner of the mill housing assembly.
A cluster mill housing assembly having substantially the same size, form and structure as a monobloc mill housing, said cluster mill housing assembly having a horizontal center line and being divided along a horizontal plane located at or close to said horizontal center line of said housing assembly into upper and lower mill housings, said mill housing assembly having two forward and two rearward corners, each of said mill housings having a roll cavity and a roll cluster in said cavity, each roll cluster comprises a work roll, intermediate rolls and backing assemblies, a gap defined between said work rolls, screw and nut assembly means mounted at each of said four mill housing assembly corners for adjusting said work roll gap by shifting said upper and lower mill housings toward and, simultaneous and symmetrically about a fixed plane coincident with said horizontal center line, away from each other depending upon the direction of rotation of said screws of said screw and nut assembly means, means for supporting said screw means and for rotating said screw means, said screw means supporting the weight of said upper and lower mill housings, and means for prestressing said upper and lower mill housings together at a spacing therebetween determined by said screw means.
Dependencies are inferred from the claim text.