Metal deforming – By relatively movable offset tool-faces – With tool motion in fixed path
Patent
1978-01-31
1980-01-22
Husar, Francis S.
Metal deforming
By relatively movable offset tool-faces
With tool motion in fixed path
7245317, 85 84, 173103, B21J 1534
Patent
active
041843576
ABSTRACT:
A powered impacting device including relativly movable concentric first and second pistons, the second piston providing a cylinder wall for guiding movement of the first piston. A spring is disposed between the pistons for exerting a biasing force maintaining the pistons in an initial relative position. A single impacting force is applied to the pistons, at first resulting in coincident movement thereof until the second piston drives an outer fastener component through workpieces to be fastened together, and then is stopped. The mass of the first piston is great enough to provide continued movement of the first piston, relative to the second piston against the bias of the spring, to drive an inner component of the fastener through the work to be assembled, deforming the outer component of the fastener so that the material pieces are held together.
REFERENCES:
patent: 3032771 (1962-05-01), Bisbing
patent: 3042244 (1962-07-01), Van Hecke
patent: 3487745 (1970-01-01), Brunelle
patent: 3724738 (1973-04-01), Hurst
patent: 4036309 (1977-07-01), Petreev
Crosby Gene P.
Husar Francis S.
Potomac Applied Mechanics, Inc.
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