Hydroforming die assembly for pinch-free tube forming

Details Hydroforming die assembly for pinch-free tube forming Hydroforming die assembly for pinch-free tube forming

1997-08-21

1999-11-09

Jones, David

Metal deforming

By application of fluent medium, or energy field

With actuated tool engaging work

723671, 7237006, 7237023, B21D 2602

Patent

active

059792019

ABSTRACT:
A die assembly having die structures that are cooperable to define a die cavity into which a metallic tubular blank can be disposed. A first die structure is moveable to seal the die cavity, and after the die cavity is sealed, the first and second die structures are moveable to reduce the cross-sectional area of the die cavity and thereby deform the metallic tubular blank within the die cavity.

REFERENCES:
patent: 3335590 (1967-08-01), Early
patent: 3820369 (1974-06-01), Tominga et al.
patent: 4829803 (1989-05-01), Cudini
patent: 5239852 (1993-08-01), Roper
patent: 5339667 (1994-08-01), Shah et al.
patent: 5735156 (1998-04-01), Yoshitomi et al.

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