Internal articulated mandrel for the stretch forming of elongate

Details Internal articulated mandrel for the stretch forming of elongate Internal articulated mandrel for the stretch forming of elongate

1993-04-05

1994-07-12

Crane, Daniel C.

Metal deforming

By use of non-deforming work-gripping clamp and relatively...

By individually non-deforming clamps

72466, 269 481, B21D 1102, B21D 901

Patent

active

053277651

ABSTRACT:
Disclosed is apparatus and a method for the stretch forming of an elongated hollow metal section, such as an aluminum extrusion. The apparatus and method of this invention uses a collapsible and expandable articulated mandrel positioned inside portions of the elongated hollow metal section to constrain and support the internal wall surfaces of the elongated hollow metal section against the reshaping forces imposed on the interior of the hollow metal section during the stretch forming operation. The mandrel disclosed herein prevents the formation of wrinkles and crimps being formed in the walls of the elongated hollow metal section during the stretch forming and reshaping thereof.

REFERENCES:
patent: 2089476 (1937-08-01), Grotnes
patent: 2615413 (1952-10-01), Adams
patent: 2889864 (1959-06-01), Bowser
patent: 3266285 (1966-08-01), Jensen
patent: 3330021 (1967-07-01), Jacobsen
patent: 3747394 (1973-07-01), Cunningham
patent: 3921427 (1975-11-01), Malone et al.
patent: 3937054 (1976-02-01), Hortvet et al.
patent: 4065953 (1978-01-01), Frentzen et al.
patent: 4627810 (1986-12-01), Von Holdt
patent: 4744233 (1988-05-01), Trudell
patent: 4803878 (1989-02-01), Moroney
patent: 4803881 (1989-02-01), Dudley
patent: 4974440 (1990-12-01), Brinegar
patent: 5101653 (1992-04-01), Hermes et al.

Affiliated with

Also associated with

Rating

Internal articulated mandrel for the stretch forming of elongate does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Internal articulated mandrel for the stretch forming of elongate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Internal articulated mandrel for the stretch forming of elongate will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-388838