Ironing die for ironing press

Details Ironing die for ironing press Ironing die for ironing press

1979-06-04

1981-03-10

Mehr, Milton S.

Metal deforming

Tool and/or tool holder

Tool comprising closed periphery deforming passageway

B21C 302

Patent

active

042546524

ABSTRACT:
An ironing die for use with a punch to reduce the wall thickness of the sidewall of the metal cup includes a body which has a circular opening therein extending from the leading surface to a trailing surface that are parallel to each other and the opening has a land spaced from both surfaces which defines a minimum diameter for the opening. The opening also has a cylindrical portion between the land and the trailing surface which has a diameter slightly larger than the minimum diameter to guide the cup after the free edge moves past the land. The opening is also flared outwardly between the land and the leading surface to produce an entry portion which guides the cup to a centered position with respect to the ironing land. In one embodiment, the wall which defines the opening also has a cut out portion between the land and the cylindrical portion.

REFERENCES:
patent: 3167044 (1965-01-01), Henrickson
patent: 4018075 (1977-04-01), Kawawa et al.
patent: 4038859 (1977-08-01), Pavleszek
Drawing (No. 250022-C), dated Jul. 1, 1969, by Kaiser Al. and Chem. Corp., Kaiser dwg. No. T-2201.

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