Knockout adjustment mechanism for forging machines

Metal deforming – By use of closed-die and coacting work-forcer – With stripping or ejecting from tool

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Details

10 11E, 72427, B21D 4500

Patent

active

041611136

ABSTRACT:
An improved knockout mechanism for forging machines or formers is disclosed in which the position of the knockout pin during the working operation of the machine is adjustably located by a tube nut threaded into the machine frame. In one embodiment, the tube nut is releasably locked in the adjusted position by a plate threaded onto the tube nut having a fulcrum on one side of the tube nut and a jackscrew on the other side at a location spaced from the tube nut greater than the spacing between the fulcrum and the tube nut so that a forced multiplication lever action is provided and secure locking is achieved without excessive jacking forces. In another embodiment, locking is provided by a lock nut threaded on the tube nut and connected to a fulcrum plate by a trunnion. A carriage is provided on the machine frame which supports means to operate the jacking screw and adjust the tube nut from locations accessible to the operator. The tube nut adjustment includes a drive gear and a driven gear automatically maintained in radial alignment by a flange on the drive gear engaging the driven gear on the tube nut. A scale located on the carriage cooperates with a locating flange on the drive gear to provide the operator with a visual indication of the adjustment of the tube nut.

REFERENCES:
patent: 3120769 (1964-02-01), Halebur
patent: 3559446 (1971-02-01), Dom et al.
patent: 3570300 (1971-03-01), Schulte
patent: 3802013 (1974-04-01), Nebendorf
patent: 4014203 (1977-03-01), Koch

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