发明授权
US07918120B2 Die cushion control device 有权
模具缓冲控制装置

Die cushion control device
摘要:
A die cushion controller controls an ascending/descending speed of a die cushion pad based on a preset pressure pattern and positional pattern. A position/pressure control switching unit constantly monitors and compares a first speed command signal υpc corresponding to a pressure deviation signal ep and a second speed command signal υhc corresponding to a position deviation signal eh, and selects a smaller one of the speed command signals to be sent to a speed control unit.
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