Press brake

Metal deforming – By relatively movable offset tool-faces – With tool motion in fixed path

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Details

72450, 72451, 7245303, 72446, 100272, B21J 918

Patent

active

049266713

ABSTRACT:
A brake press including a stationary bar, a translating bar, a disk rotatable about a fixed, stationary axis, a first set of linkage interconnecting one longitudinal end of the translating bar with the disk, and a second set of linkage interconnecting the other longitudinal end of the translating bar with the disk. The rotation of the disk in a first direction acts through both sets of linkage to translate the translating bar toward the stationary bar, and the rotation of the disk in a second direction acts through both sets of linkage to translate the translating bar away from the stationary bar. The disk may be selectively rotated in either direction or maintained in a stationary position by one or more hydraulic rams. The flow of hydraulic fluid to the hydraulic rams is controlled by a foot pedal which is biased in a position which will cause the hydraulic rams to rotate the disk so that the translating bar is moved away from the stationary bar.

REFERENCES:
patent: 168494 (1875-10-01), Hoffman et al.
patent: 3552183 (1971-01-01), Heitmann
patent: 3570300 (1971-03-01), Schulte
patent: 3763689 (1973-10-01), Bridges
patent: 4013003 (1977-03-01), Finsterwalder et al.
patent: 4070896 (1978-01-01), Heitner
patent: 4131189 (1978-12-01), Stephens
patent: 4170124 (1979-10-01), MacGregor
patent: 4419929 (1983-12-01), Dommer et al.
patent: 4590784 (1986-05-01), Okabe et al.
patent: 4656862 (1987-04-01), Kogure et al.

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