| 摘要 |
PURPOSE:To control a material to be rolled to good shapes by making intermediate rolls movable in their axial center directions and providing means which apply roll bending forces independently upon the intermediate rolls and the work rolls. CONSTITUTION:Pressure is applied respectively at both ends of work rolls 2 and intermediate rolls 3 by means of oil hydraulic cylinders 11 and 12 to act bending forces which negate the deflections of these rolls by rolling load. Then the rolls 3 bend along divided backup rolls 4, and the rolls 2 bend along the rolls 3. When the rolls 3 are moved in their axial center directions to bring the crowned parts close to the end parts of a material 1 to be rolled, the parts of the rolls 2 projecting from the material 1 are released of bending restraints by the rolls 3, and the parts of the rolls 2 near the end part of the material 1 are bent to a projecting shape by the bending forces of the rolls 2 and the distributions of the rolling reactions from the material 1, whereby edge drops are prevented. |
