Metal deforming – By use of closed-die and coacting work-forcer – Forcing work into or within closed die; e.g. – forging
Patent
1980-01-25
1982-03-16
Gilden, Leon
Metal deforming
By use of closed-die and coacting work-forcer
Forcing work into or within closed die; e.g., forging
10 86A, 10 86F, 72474, B21D 2200
Patent
active
043194770
ABSTRACT:
The invention relates to a method and a tool (6,8) for producing a bushing structure (1,2) having a bushing (1) and a polygonal flange (2) said flange initially being formed with a circular circumference (5) having an outer diameter equalling the diameter of the inscribed circle (5) of the polygon to be made whereafter by means of cold deformation the material of the flange at the location of the angles of the polygon to be made is forced to flow outwards by means of a die (8) having projections (9) the inner surfaces (10) of which are steep with respect to the axis of the die and the bottom surface (11) of which run obliquely and arching by upwards and outwards the radial width of said projections decreasing from the center to both sides.
REFERENCES:
patent: 1142782 (1915-06-01), Carlson
patent: 2138404 (1938-11-01), Haas
patent: 2157354 (1939-05-01), Sherman
patent: 2158434 (1939-05-01), Schwartz
patent: 2205871 (1940-06-01), Young
patent: 2539899 (1951-01-01), Delaney
patent: 3001214 (1961-09-01), Anderson et al.
Gilden Leon
Koninklijke Emballage Industrie Van Leer B.V.
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