METHOD AND DEVICE FOR CONTROLLING FORGING DIE

摘要

PROBLEM TO BE SOLVED: To appropriately conduct a buffer function to absorb a forming load by the pressure fluid having a high pressure and a high discharge speed without generating a surge pressure. SOLUTION: A hydraulic pressure controller 10 is provided with a high pressure accumulator 124, when the hydraulic pressure imparting a forming load to a pressure oil filled in a pressure chamber 58 reaches a relief set pressure, to switch a relief valve 104 from a open state to closed by sucking the pressure oil supplied to a relief chamber of the relief valve 104 and a low pressure accumulator 128 to suck the pressure oil filled in the pressure chamber 58 through the relief valve 104.