Roller leveller with variable center distance

Details Roller leveller with variable center distance Roller leveller with variable center distance

2005-03-01

2009-11-17

Ross, Dana (Department: 3725)

Metal deforming

By deflecting successively-presented portions of work during...

By use of deflected arranged to provide longitudinally...

C072S162000

Reexamination Certificate

active

07617710

ABSTRACT:
A tensionless leveller for levelling a metal strip and having an entry and an exit includes n+1 motorized rolls each having a constant radius R. The leveller also includes a lower superposed cassette supporting at least n/2 of the rolls and an upper superposed cassette supporting at least n/2 of the rolls not supported by the lower superposed cassette. The rolls are offset with respect to one another and are placed alternately above and below a path of the strip. An axis of each of the rolls of the lower cassette is separated from an axis of an immediately successive roll of the upper cassette by a center-to-center spacing Ek, in which: for k from 2 to 4, R/Ek=R/E1; for k from n−3 to n, R/Ek=R/Enand R/Ec<R/E1; and for k from 5 to n−1, R/En≦R/Ek≦R/E1, and R/Ek≧R/Ek+1.

REFERENCES:
patent: 4635458 (1987-01-01), Bradlee
patent: 2 334 440 (1977-07-01), None

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