Metal deforming – By use of non-deforming work-gripping clamp and relatively... – Clamp structure constitutes sole initial metal-deforming...
Patent
1976-04-06
1977-03-29
Lanham, C.W.
Metal deforming
By use of non-deforming work-gripping clamp and relatively...
Clamp structure constitutes sole initial metal-deforming...
72316, 7245301, 72457, B21D 316
Patent
active
040141969
ABSTRACT:
An apparatus for bending components into exact desired shapes, particularly for straightening bent bolts, crank shafts and the like metal components or work pieces, has an upright frame carrying replaceable fixtures sized and shaped for securing one end of a work piece and tiltably suspending an elongated socket member for receiving the other end of the work piece. An upright straightening arm or lever is fulcrumed on the frame through a ball and socket joint and linked to the socket member for tilting the member in a direction controlled by the lever to thereby bend the work piece back into the desired alignment. A high mechanical advantage ratio is obtained through a long lever arm on one side of the fulcrum, a short lever arm on the opposite side of the fulcrum and the length of the suspended socket member propelled at one end by the short lever arm and receiving the work piece at the opposite end. In a preferred embodiment, the lever and elongated socket member are mounted upright on the frame, are connected by a sliding pivot linkage through spherical-type bearings and the lever has an operating handle on its top end. A power assist for driving the top end of the lever may include a hydraulic or pneumatic jack mounted transversely on top of the lever and urging a piston rod carried roller or bumper against a surrounding frame carried ring with guiding handles directing the roller or bumper in the ring to exert a tilting force to the lever in the desired direction.
REFERENCES:
patent: 347588 (1886-08-01), George
patent: 557083 (1897-02-01), Tallmage
patent: 3965714 (1976-06-01), Beard
Crosby Gene P.
Lanham C.W.
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