Sliding plug for applying end loads during isostatic bulge formi

Details Sliding plug for applying end loads during isostatic bulge formi Sliding plug for applying end loads during isostatic bulge formi

1999-02-26

2000-07-18

Jones, David

Metal deforming

By application of fluent medium, or energy field

Using fixed die

72 56, 294211, B21D 2602

Patent

active

060890649

ABSTRACT:
Sliding plugs use o-ring seals against the internal walls of an isostatic bulge forming die to apply end load to tube stock blanks during isostatic bulge forming. The die is made from two or more mating segments that assemble together to define a central channel for holding the tube stock blank. The plugs move inwardly into the die when the blank elongates or expands into the die, because such expansion reduces the internal pressure within the blank. The plugs are drawn inwardly because of the pressure decline in the blank. The plugs compress the ends of the blank and force the ends inwardly closer together. Such motion effectively feeds more material to the die and permits greater elongation in the completed part with tighter corner radii. Motion limiting shoulders on the plugs assure that the feeding of material is even from both ends. Typical range of motion for a plug is about 0.5 inches.

REFERENCES:
patent: 3564886 (1971-02-01), Nakamura
patent: 4384840 (1983-05-01), Desplanches et al.
patent: 4449281 (1984-05-01), Yoshida et al.
patent: 4590655 (1986-05-01), Javorik
patent: 4840053 (1989-06-01), Nakamura
patent: 4875270 (1989-10-01), Krips et al.
patent: 5419171 (1995-05-01), Bumgarner
patent: 5435163 (1995-07-01), Schafer
patent: 5485737 (1996-01-01), Dickerson

Affiliated with

Also associated with

Rating

Sliding plug for applying end loads during isostatic bulge formi does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Sliding plug for applying end loads during isostatic bulge formi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sliding plug for applying end loads during isostatic bulge formi will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2025063