| 摘要 |
There are provided a die cushion force control method and a die cushion device (200) that can improve response delay of die cushion force without changing die cushion waiting position upward. In the die cushion force control method, a servo motor (256) is driven according to a die cushion force command B previously set and the die cushion force is generated on the cushion pad (210). The die cushion force control method includes a step of allowing the cushion pad (210) to wait in a predetermined die cushion waiting position at which a die cushion force action will start, and a preliminary pressurization step of outputting the die cushion force command B and preliminary applying pressure to the cushion pad (210) before a slide of a press machine reaches the die cushion waiting position. |
