Hydraulic presses

Details Hydraulic presses Hydraulic presses

1981-05-22

1983-01-04

Crosby, Gene

Metal deforming

By relatively movable offset tool-faces

With tool motion in fixed path

72241, 7245314, 100258A, B21D 706, B21J 746

Patent

active

043666990

ABSTRACT:
A hydraulic press such as a press brake is disclosed having a pair of long movable and fixed tools which are always kept in parallel with each other by detecting the obliquities of the movable and fixed tools and controlling the fluid delivery to hydraulic motors which drive the movable tool. Each hydraulic motor is controlled by a valve which is actuated by a rocking cam arrangement. The limit of movement of the movable tool toward the fixed tool also can be easily adjusted by adjusting the rocking cam arrangement.

REFERENCES:
patent: 1900050 (1933-03-01), Ernst
patent: 3007508 (1961-11-01), Giordano
patent: 4282738 (1981-08-01), Kojima

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