WORKING OIL APPLICATION METHOD IN PUSHING AND BENDING AND PUSHING AND BENDING UNIT

摘要

PROBLEM TO BE SOLVED: To provide a technology capable of optimizing the supply of working oil to the working section at the time of bending a long sized stock using an oscillating forming member. SOLUTION: An oil application control portion 78 which receives a curvature threshold and a twisting angle threshold from the threshold input portion 76 and a product shape datum from the product shape data storage portion 75 opens the on-off valve 73 only when at least one of a workpiece curvature and the twisting angle threshold obtained from the product shape data goes beyond the predetermined curvature threshold or the twisting threshold, and brings the working oil application mechanism 70 into the oil supply status. Oil supply is suspended in any other occasion.