Metal deforming – By use of closed-die and coacting work-forcer
Patent
1984-09-11
1987-03-31
Godici, Nicholas P.
Metal deforming
By use of closed-die and coacting work-forcer
72265, 72370, 72466, 72467, B21D 2200
Patent
active
046533052
ABSTRACT:
A method and apparatus for cold working a metallic blank having a central hole into a substantially annular or cylindrical article such as an internally and or externally toothed gear, with the method including forcibly inserting a hollow metallic blank at a normal temperature into a die cavity formed between a mandrel placed on a fixed base and a die concentrically surrounding the mandrel so that the blank is plastically deformed between the mandrel and the die; forcibly inserting a subsequent hollow metallic blank into the die cavity while the relative position between the mandrel, the die and the first blank being plastically deformed therebetween is kept unchanged; and urging the subsequent blank against the first blank to extrude the first blank forwardly out of the die whereby the first-said blank is formed into a tubular article.
REFERENCES:
patent: 2932889 (1960-04-01), Kritscher
patent: 3165199 (1965-01-01), Tlaker
patent: 3213664 (1965-10-01), Putetti et al.
patent: 3261196 (1966-07-01), Bradlee et al.
patent: 3564894 (1971-02-01), Sharon
patent: 3837205 (1974-09-01), Simon
patent: 4038860 (1977-08-01), Kanamaru et al.
patent: 4509353 (1985-04-01), Ike et al.
Aoyama Susumu
Kanamaru Hisanobu
Koike Tsutomu
Godici Nicholas P.
Hitachi , Ltd.
Kearns Jerry
M. H. Center, Ltd.
LandOfFree
Apparatus for forming metallic article by cold extrusion does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for forming metallic article by cold extrusion, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for forming metallic article by cold extrusion will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2204620