Metal forming press having straight line drive mechanism

Details Metal forming press having straight line drive mechanism Metal forming press having straight line drive mechanism

2006-06-20

2006-06-20

Jones, David (Department: 3725)

Metal deforming

With means to drive tool

Including link-actuated tool support

C072S347000, C072S349000, C072S451000, C072S456000, C100S282000

Reexamination Certificate

active

07062949

ABSTRACT:
A metal forming press has an oscillating beam driven at its center by a connecting rod connected to a throw on a crankshaft. The upper end of the beam is pivoted to a link which drives a ram. The lower end of the beam pivots about a rotating eccentric shaft having an eccentric lobe. As the beam oscillates, these eccentricities cause the lower pivot to move toward and away from the ram so that the arc of the upper pivot approximates a straight line.

REFERENCES:
patent: 3766771 (1973-10-01), Spachner et al.
patent: 3817139 (1974-06-01), Desai et al.
patent: 4107973 (1978-08-01), Smejkal et al.
patent: 4578981 (1986-04-01), Nishikawa et al.
patent: 4996865 (1991-03-01), Haulsee et al.
patent: 5335532 (1994-08-01), Mueller et al.
patent: 5546785 (1996-08-01), Platt et al.
patent: 6012322 (2000-01-01), Itakura

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