Antrieb für eine Ziehkissen-Einrichtung

摘要

A die cushion drive system (1) provided with a servo motor (11), serving as a source of drive power for a die cushion (52) of a press machine and a power circuit (12) with a regeneration function which regenerates energy from the servo motor (11) and returns it to an AC power supply (13), whereby it is possible to power the die cushion drive system (1) by a servo motor and return the regenerated energy of this servo motor to the power source so as to save on energy.