Metal deforming – By use of closed-die and coacting work-forcer – Forcing work into or within closed die; e.g. – forging
Patent
1976-11-01
1978-04-11
Gilden, Leon
Metal deforming
By use of closed-die and coacting work-forcer
Forcing work into or within closed die; e.g., forging
29157T, B21D 2200
Patent
active
040832198
ABSTRACT:
Apparatus and method for forming cylindrical tubular lateral extensions on cylindrical or oval body tube by swaging them from around an oval opening, which is narrower along the sides to compensate for the body curvature, the apparatus including a circular male swaging die with a profile that tapers at progressively decreasing angles to the stroke direction, i.e. a series of progressively steeper conical surfaces or a sphere. The die may be a complete ball which is rolled into a formed body tube; positioned over an opening therein and pushed therethrough by a ram driven through the opposite, aligned opening. The body tube may then be inverted and another ball rolled therein to be pushed through the opposite opening.
REFERENCES:
patent: 611802 (1898-10-01), Taylor
patent: 691454 (1902-01-01), Dier
patent: 2883744 (1959-04-01), Barnhart
patent: 2932338 (1960-04-01), Franck
patent: 3643322 (1972-02-01), Gerstle
Combes Marvin G.
Ripert Roger L.
Gilden Leon
Grove Valve and Regulator Company
Stidham Melvin R.
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