Punch press drive device

Details Punch press drive device Punch press drive device

1997-09-03

1999-09-21

Rada, Rinaldi I.

Cutting

With means to monitor and control operation

83 74, 83 75, 83 767, 83 769, B26D 500, G05B 1918, B30B 1514

Patent

active

059539720

ABSTRACT:
A device that increases the range of speeds at which the servo-motor may be used and stops insufficient output at times of slow speed, wherein an intermediate terminal is arranged in a primary winding as an output characteristic adjustment means for adjusting the torque with respect to the speed of the servo-motor and a switching control means is arranged for switching the connection of the power supply from a final terminal to an intermediate terminal when the punch speed exceeds a predetermined value.

REFERENCES:
patent: 5279197 (1994-01-01), Takeda et al.
patent: 5299478 (1994-04-01), Schorn et al.
patent: 5588344 (1996-12-01), Chun
patent: 5706711 (1998-01-01), Ito
patent: 5709125 (1998-01-01), Nakazawa et al.

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