Metal deforming – Including interrelated tool-mover and blankholder-mover
Patent
1991-03-08
1992-08-11
Jones, David
Metal deforming
Including interrelated tool-mover and blankholder-mover
72452, 100254, 100282, 83615, 74603, B21J 918
Patent
active
051368757
ABSTRACT:
A double action mechanical press, especially for cupping operations in which an outer slide is provided within which an inner slide is reciprocally mounted on a common crankshaft. According to the present invention, a single dynamic balancer, out of phase from both the inner and outer slides, is provided on the crankshaft in order to counterbalance the inertial forces generated by the inner and outer slides during press operation.
REFERENCES:
patent: 2357557 (1944-09-01), Sherman et al.
patent: 2610524 (1952-09-01), Maussnest
patent: 3450038 (1969-06-01), Kraft et al.
patent: 3611918 (1971-10-01), Marsh
patent: 4674357 (1987-06-01), Sugawara et al.
patent: 4757734 (1988-07-01), Portmann
patent: 4890524 (1990-01-01), Brown et al.
Jones David
The Minster Machine Company
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