Twin motor and screw drive for workpiece positioning stops and f

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

1976-08-06

1978-04-18

Lanham, C.W.

Metal deforming

By relatively movable offset tool-faces

With tool motion in fixed path

72461, B21D 1122, B21D 706

Patent

active

040844242

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, and to control the two motors for the front gauge while the 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.

REFERENCES:
patent: 2627890 (1953-02-01), Lloyd
patent: 3260087 (1966-07-01), Guarino
patent: 3618349 (1971-11-01), Roch
patent: 3820377 (1974-06-01), Roch
patent: 3826119 (1974-07-01), Marotto

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