Method of manufacturing a cup-shaped article

Details Method of manufacturing a cup-shaped article Method of manufacturing a cup-shaped article

1997-05-09

1998-03-03

Larson, Lowell A.

Metal deforming

By use of closed-die and coacting work-forcer

Cup or shell drawing

72349, 723794, B21D 2200, B21D 2221, B21C 3702

Patent

active

057222827

ABSTRACT:
A method for manufacturing a cup-shaped article includes making the thickness of a cylinder portion of a cup-shaped configuration uniform, between a step of drawing a flat plate material portion into a cup-shaped configuration and a step of ironing the cup-shaped configuration into a final cup-shaped article. Increasing the thickness may be performed by coining or axial compression. The thickness increasing step may be replaced by a step, provided prior to the drawing step, of providing a plate material portion having a greater thickness at a radially inner portion than at a radially outer portion.

REFERENCES:
patent: 2770034 (1956-11-01), Lyon
patent: 2776475 (1957-01-01), Mapes
patent: 2875511 (1959-03-01), Hawes
patent: 2877546 (1959-06-01), Wilcox
patent: 3466908 (1969-09-01), Whiteford
patent: 4129024 (1978-12-01), Deveney
patent: 4339939 (1982-07-01), Book et al.
patent: 5149238 (1992-09-01), McEldowney et al.
patent: 5347839 (1994-09-01), Saunders

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