PURPOSE: To decrease the excessive thrust force acting on work rolls by providing power transmission devices which permit the movement of the work rolls in their axial direction in place of thrust bearing devices for the work rolls of a roll cross rolling mill.
CONSTITUTION: A paired cross system is made into the construction wherein the thrusts of upper and lower work rolls 1, 2 are not supported. Power transmission devices 5, 6 which transmit torque and are adjustable in length, for example, splined shafts which absorb the axial movement of the work rolls, are provided. The upper work roll 1 and a backup roll 3 as well as the lower work roll 2 and a backup roll 4 are held in the positions where the axial centers are in parallel with each other and in this state the axial centers of the upper and lower paired rolls are crossed within the horizontal plane, and a plate material is rolled with such rolls. If relative slips are to arise in the axial direction between the work rolls and the plate, the rolls 1, 2 move axially so as not to apply any relative slip on the plate W.
| JPH09239411 | WORK ROLL MOVING SYSTEM ROLLING MILL |
HAYASHI KANJI
OOMORI SHIYUNJI
MAEDA NOBUTAKA
YAMAMOTO KUNIO
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