Patent ID: 6041636
Filing Date: 2000-03-28
Classification: B21B

Abstract:
A 6-high cold rolling mill comprising a pass line, free floating work rolls, upper and lower intermediate assemblies, each intermediate roll assembly comprising front and rear chocks, an intermediate roll having neck bearings mounted respectively in said chocks, left and right side support assemblies for one of said work rolls mounted to and extending between said chocks and at least one lubrication passage in fluid communication with at least one of said intermediate roll neck bearings or said side support assemblies, backup rolls, front and rear doors, thrust bearings on said doors comprising axial location elements for said work rolls, vertically acting hydraulic cylinders for intermediate roll bending, balancing, and counterbalancing, for vertical shifting of said intermediate roll assemblies between their working levels and their removal levels, and for support of said upper work roll at roll change time, horizontally acting hydraulic cylinders for axial shifting of said intermediate rolls, means for axially locating at least one of said intermediate roll assemblies when it is at its respective working level, said means allowing axial movement of said at least one intermediate roll assembly when it is at its respective removal level, at least one lubrication connection device configured to connect at least one of said at least one lubrication passage in fluid communication with a source of lubrication when a respective one of said intermediate roll assemblies is at its working level, said at least one lubrication connection device ceasing to connect said at least one lubrication passage in fluid communication with said source of lubrication as a result of said respective intermediate roll assembly vertically shifting away from its working level toward its removal level, said intermediate roll assemblies disengaging from all hydraulic cylinders and from said means for axially locating said intermediate rolls as a result of said vertical shifting of said intermediate roll assemblies away from their working level toward their removal level, whereby said intermediate roll assemblies may be removed from the mill by shifting them axially toward said front side.