Forging method and forging apparatus

Details Forging method and forging apparatus Forging method and forging apparatus

2007-09-28

2011-10-18

Ekiert, Teresa (Department: 3725)

Metal deforming

By use of closed-die and coacting work-forcer

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

C072S355600

Reexamination Certificate

active

08037731

ABSTRACT:
A forging method and forging apparatus able to improve a dimensional precision of a forged article and able to reduce the machining processes to a minimum and thereby reduce costs are provided. That is, a forging method placing a workpiece inside of a die, pressing the workpiece by a top part of the die in the axial direction toward the bottom part side of the die, and making the material of the end face of the workpiece flow to form the end face of the workpiece into a recessed/projecting shape, which forging method characterized by using independent pressing and holding means for pressing and holding the workpiece in the axial direction independent for the top part and the bottom part at the time of the press forming.

REFERENCES:
patent: 6151777 (2000-11-01), Sakuraba
patent: 7013696 (2006-03-01), Ando et al.
patent: 7191633 (2007-03-01), Uehara et al.
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patent: A-2004-114134 (2004-04-01), None
patent: A-2004-344931 (2004-12-01), None
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patent: A-2006-043770 (2006-02-01), None
Japanese Office Action mailed Apr. 12, 2011 in Japanese Application No. 2006-273089 with English-language translation.

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