Die cushion drive system

Details Die cushion drive system Die cushion drive system

2008-07-15

2008-07-15

Tolan, Edward (Department: 3725)

Metal deforming

With means to drive tool

Including screw-actuated tool support

C072S029200

Reexamination Certificate

active

07398667

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

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patent: 6526800 (2003-03-01), Virtanen et al.
patent: 7106023 (2006-09-01), Ota et al.
patent: 61-115627 (1986-06-01), None
patent: 07-195129 (1995-08-01), None

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