Presses – Reciprocating press construction – With mechanical force multiplier
Patent
1996-06-06
1997-11-18
Gerrity, Stephen F.
Presses
Reciprocating press construction
With mechanical force multiplier
100286, 100292, 83615, 83628, 724526, B30B 126
Patent
active
056876459
ABSTRACT:
There is disclosed a mechanical pressing machine in which an unbalanced inertia force, produced during reciprocal movement of a slider, is canceled without producing deflection in the whole of the pressing machine, thereby enhancing dynamic precision. The slider, slidably mounted at a lower portion of a frame, is connected to a dynamic balancer, slidably mounted at an upper portion of the frame, by link mechanisms. A press cam, having a cam surface in contact with cam followers mounted respectively on the slider and the dynamic balancer, is fixedly mounted on a cam shaft. Dynamic balancer cams, each having a cam surface in contact with cam followers mounted respectively on interconnecting points of the link mechanisms, is fixedly mounted on the cam shaft. The dynamic balancer is driven to move in a direction opposite to a direction of movement of the slider, so that an unbalanced inertia force, produced in the moving slider, is canceled by an oppositely-directed inertia force produced in the dynamic balancer.
REFERENCES:
patent: 2532320 (1950-12-01), Maussnest
patent: 2857157 (1958-10-01), Bonquet
patent: 3859838 (1975-01-01), Karsnak
patent: 4638731 (1987-01-01), Kato
patent: 4699036 (1987-10-01), Henne
patent: 4852382 (1989-08-01), Gietz et al.
patent: 4967586 (1990-11-01), Hecht
patent: 5467706 (1995-11-01), Kato
patent: 5605096 (1997-02-01), Kato
U.S. application No. 08/610,452, Kato, filed Mar. 4, 1996.
Gerrity Stephen F.
Sankyo Seisakusho Co.
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