Metal deforming – By use of roller or roller-like tool-element – With carrier for roller-couple or tool-couple
Patent
1985-06-21
1986-07-22
Husar, Francis S.
Metal deforming
By use of roller or roller-like tool-element
With carrier for roller-couple or tool-couple
29113AD, 29125, 29130, 72 35, 72247, B21B 2702, B21B 3118
Patent
active
046011889
ABSTRACT:
A pair of work rolls is provided in a strip mill of the type having one or more back-up rolls for each work roll. Each work roll comprises a tubular body having an axial bore of uniform diameter throughout its length. The exterior surface of the tubular body has a cylindrical roll face of uniform diameter, terminating at its ends in neck portions of lesser diameter. The ends of the body are closed by removable fluid-tight plugs. A cylindrical mandrel of the same length as the roll face is mounted in the bore of each work roll and normally has an interference fit therein. The mandrels of the upper and lower work rolls are relieved at opposite ends. The remainder of the work roll bore at either end of the mandrel defines a pair of volumes in each work roll, filled with hydraulic fluid and individually controllable as to hydraulic pressure. When a strip is to be rolled, the mandrel of each roll is shifted to align its relief with one of the strip edges. In each work roll, the hydraulic pressure in that volume which must expand to shift the mandrel in the desired direction is increased until the interference fit of the mandrel becomes a sliding fit and the mandrel shifts as desired. In each work roll hydraulic fluid from the volume which must contract is allowed to escape, preventing pressure increase therein. Each work roll has an exterior indicator showing the position of the mandrel therein. Once positioned, the hydraulic pressure is relieved and the mandrel reassumes its interference fit.
REFERENCES:
patent: 4407151 (1983-10-01), Gronbech
Husar Francis S.
Katz Steve
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