Smart straightening press

Details Smart straightening press Smart straightening press

1989-04-28

1990-04-03

Jones, David

Metal deforming

By relatively movable offset tool-faces

With tool motion in fixed path

72 10, 72 21, 72 32, 72702, B21D 310

Patent

active

049129570

ABSTRACT:
A straightening press of the type wherein a workpiece is supported for deflection in a given direction by an anvil engageable with the workpiece. A reference spring is supported for deflection with the reference spring supports being serially interconnected with the anvil. In a preferred embodiment, a floating bridge carries the anvil and reference spring supports. Deflecting force applied to the reference spring, as by a ram, is transmitted to the workpiece via the floating bridge. A change in the differential displacement of the ram and floating bridge is detected to determine the onset of plastic deformation of the workpiece.

REFERENCES:
patent: 1840237 (1932-01-01), Leighton
patent: 2426390 (1947-08-01), De Forest
patent: 2748829 (1956-06-01), Korenak
patent: 2765836 (1956-10-01), Niekelski
patent: 4154073 (1979-05-01), Galdabini

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