Twin motor and screw drive for workpiece positioning stops...

Details Twin motor and screw drive for workpiece positioning stops... Twin motor and screw drive for workpiece positioning stops...

B - Operations, Transporting

21

D

341/100, 164/88

B21D 5/02 (2006.01) B21D 5/00 (2006.01) B23D 33/10 (2006.01)

Patent

CA 1111942

ABSTRACT A rear gauge assembly includes a gauge bar extending between two carriages, each carriage being mounted to a housing mounted to the rear of a press brake bed and having a lead screw and motor associated with it. Front gauges are provided on carriages on a pair of similar housings mounted to a rail mounted to the front of a press brake bed, each of these housings also having a lead screw and motor for driving its respective carriage. A microcomputer is employed to control the two motors for synchronizing movement of the rear gauge carriages with each other while driving the rear gauge, ant to control the two motors for the front gauge while the front gauges are being driven to synchronize movement of front gauges are being driven to synchronize movement of front gauges with each other. The same synchronizing techniques for two lead screws are employed on a new type of ram drive for press brakes incorporating two ram drive screws, with a motor for each screw, the motors being synchronized by the controller.

263726

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