Method and means for shaping parts by hydraulic extrusion

Details Method and means for shaping parts by hydraulic extrusion Method and means for shaping parts by hydraulic extrusion

1975-02-25

1977-03-15

Mehr, Milton S.

Metal deforming

By application of fluent medium, or energy field

With actuated tool engaging work

72 60, B21D 2604

Patent

active

040117448

ABSTRACT:
The proposed method for shaping parts by hydraulic extrusion allows of deforming the blank by different pressures exerted upon different blank zones. This principle is embodied in a device which comprises a vessel housing a plurality of auxiliary vessels whereof the edges are pressed against the blank, defining closed cavities therewith. Liquid under pressure is supplied into each of these cavities.
Thanks to such an arrangement, the parts manufactured have a negligible wall thickness error.
The design of the proposed device permits manufacturing double-curvature parts.

REFERENCES:
patent: 2284773 (1942-06-01), Sivian et al.
patent: 2728317 (1955-12-01), Clevenger et al.
patent: 2960141 (1960-11-01), Rutter
patent: 3420089 (1969-01-01), Myers
patent: 3566650 (1971-03-01), Johnson
patent: 3715902 (1973-02-01), Fuchs, Jr.

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