Presses – Reciprocating press construction – With mechanical force multiplier
Patent
1994-08-22
1995-11-21
Gerrity, Stephen F.
Presses
Reciprocating press construction
With mechanical force multiplier
74 55, 74603, 83615, 100286, 100292, B30B 126
Patent
active
054677068
ABSTRACT:
There is disclosed a mechanical pressing machine utilizing a rotation cam, in which an unbalanced inertia force, produced during a reciprocal movement of a slider, is canceled in a slider system without producing a large flexure in the whole of the pressing machine, thereby enhancing a dynamic precision. The slider and a balance weight are mounted respectively on an upper portion and a lower portion of a frame for vertical sliding movement. The slider and the balance weight are connected through links to a pair of sliding blocks which are reciprocally movable in opposite horizontal directions through a rib cam. With this arrangement, the slider and the balance weight are reciprocally moved vertically in opposite directions, respectively, so that an inertia force of the slider is canceled in the slider system.
REFERENCES:
patent: 461463 (1891-10-01), Willis
patent: 493996 (1893-03-01), Gressett
patent: 4156387 (1979-05-01), Portmann
patent: 4493251 (1985-01-01), Green
Ubertragungsfunktionen fur Kurvengetriebe mit Doppelhubbewegungen, p. 414 Maschinenbautechnik 28 (1979), Prof. Dr.-Ing. habil. J. Volmer (KDT), Dr.-Ing. R. Brock (KDT), Dipl.-Ing. G. Uhlig (KDT) Technische Hochschule Karl-Marx-Stadt.
Gerrity Stephen F.
Sankyo Seisakusho Co.
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