Forging method for a hollow article

Metal deforming – With cutting – By shearing tool-couple

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

72333, 72356, 72377, B21D 2832, B21J 512

Patent

active

049189697

ABSTRACT:
A forging method comprises the following four steps: a first step of disposing a columnar material into a first die and extruding one end portion of the material with a first punch in a direction opposite to the advancing direction of the first punch, a second step of deepending a first blind hole in a second stepped die with a cavity having large and small internal diameter portions, and extruding the other end portion of the material into the inside of the small internal diameter portion of the cavity with a second punch which has been previously extended thereinto, a third step of fitting the first and second blind holes to third punches while exposing the small outer diameter portion from a third die and pressurizing, by means of a sleeve, only an end face portion of the small outer diameter portion formed with the second blind hole to expand the small outer diameter portion of the material toward an outer periphery, and a fourth step of punching out a blind portion of the material.

REFERENCES:
patent: 2216201 (1940-10-01), Keller
patent: 4352283 (1982-10-01), Bailey
patent: 4416141 (1983-11-01), Nippert
Industrieanzeiger, No. 12, p. 22, Mar. 12, 1982.
American Machinist, p. 139, July 20, 1953.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Forging method for a hollow article does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Forging method for a hollow article, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Forging method for a hollow article will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-27275

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.