Upsetting method and upsetting apparatus

Details Upsetting method and upsetting apparatus Upsetting method and upsetting apparatus

2008-04-22

2008-04-22

Tolan, Ed (Department: 3725)

Metal deforming

By use of closed-die and coacting work-forcer

Forcing work into or within closed die; e.g., forging

C072S355600, C072S403000

Reexamination Certificate

active

07360387

ABSTRACT:
To provide an upsetting method capable of efficiently expanding a bar-shaped raw material at least two portions. A plurality of guides31and32each having an insertion hole34are prepared. The bar-shaped raw material1secured to a fixed die20is inserted and held in each insertion hole34of the plurality of guides31and32in order. Then, a first exposed portion4of the raw material1exposed between a first guide31located at the foremost side of the plurality of guides31and32and the fixed die32is expanded in diameter by moving the plurality of guides31and32in a direction opposite to a moving direction of the punch50R in a mutually adhering manner while pressurizing the raw material1in the axial direction with the punch50R. After completion of the movement of the first guide31, a second exposed portion of the raw material1exposed between both the guides31and32is expanded in diameter by relatively moving the second guide32located behind the first guide31among the plurality of guides31and32in a direction opposite to a moving direction of the punch50R.

REFERENCES:
patent: 4317355 (1982-03-01), Hatsuno et al.
patent: 4838062 (1989-06-01), Prenn
patent: 5365765 (1994-11-01), Gohl et al.
patent: 30 09 656 (1980-09-01), None
patent: 2 051 634 (1981-01-01), None
patent: 48-062646 (1973-09-01), None
patent: 55-126340 (1980-09-01), None
patent: 5-237584 (1993-09-01), None
patent: 09-253782 (1997-09-01), None
patent: 2002-96121 (2002-04-01), None
patent: 2003-53470 (2003-02-01), None
patent: 2003-290862 (2003-10-01), None
patent: 2004-261857 (2004-09-01), None

Affiliated with

Also associated with

Rating

Upsetting method and upsetting apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Upsetting method and upsetting apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Upsetting method and upsetting apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2796390