Method of and apparatus for manufacturing top plate for metallic

Details Method of and apparatus for manufacturing top plate for metallic Method of and apparatus for manufacturing top plate for metallic

1991-08-23

1992-12-29

Crane, Daniel C.

Metal deforming

With cutting

By shearing tool-couple

72358, 723792, B21D 2814

Patent

active

051741458

ABSTRACT:
A circular hole is defined in a top plate stock of thin sheet steel, and a peripheral edge of the circular hole is raised and radially outwardly expanded into a substantially frustoconical first flange blank. Then, a peripheral edge of a proximal portion of the first flange blank is raised and radially outwardly expanded into a substantially frustoconical second flange blank contiguous to the first flange blank, the second flange blank having a lower portion beneath the peripheral edge of the proximal portion. Finally, the third flange blank is drawn into a tubular flange which has a predetermined inside diameter and a predetermined height.

REFERENCES:
patent: 1623325 (1927-05-01), Wetmore
patent: 2021960 (1935-11-01), Kramer
patent: 2271762 (1942-02-01), Draper
patent: 2455311 (1948-11-01), Meyers et al.
patent: 2460720 (1949-02-01), Thompson
patent: 3923192 (1975-12-01), Walters
patent: 4109501 (1978-08-01), Kozima
patent: 4111029 (1978-09-01), Dulaquais
patent: 4706836 (1987-11-01), Greck
patent: 4852238 (1989-08-01), Schurr
patent: 4956989 (1990-09-01), Nakajima

Affiliated with

Also associated with

Rating

Method of and apparatus for manufacturing top plate for metallic does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of and apparatus for manufacturing top plate for metallic, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of and apparatus for manufacturing top plate for metallic will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1880002