Metal deforming – Tool and/or tool holder – Tool comprising closed periphery deforming passageway
Patent
1990-12-14
1992-03-17
Crane, Daniel C.
Metal deforming
Tool and/or tool holder
Tool comprising closed periphery deforming passageway
72260, B21C 2502
Patent
active
050957341
ABSTRACT:
An extrusion die for extrusion of metal has a passageway with a bearing section having parallel bearing surface portions in the direction of extrusion which extend inwardly from an inlet opening a variable distance based upon the size of the gap at such portions and a relief section downstream from said bearing section and having relief surface portions tapering away from said bearing surface portions in the direction of extrusion, said relief surface portions following a straight-line path.
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Pp. 7 and 9 of brochure of Fanuc Ltd., Minamitsuru, Japan.
Article "Die Design and Construction in Europe", Alan Castle, Roger Flory and John Gagg, pp. 25-34 of the report of proceeding of the 1988 AEC Meeting.
Article "Extrusion Die Making in the United States", Luis E. Bello, pp. 45-52 of the preceedings of the 1988 AEC Meeting.
Crane Daniel C.
William L. Bonnell Company, Inc.
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