Forging method forged product and forging apparatus

Details Forging method forged product and forging apparatus Forging method forged product and forging apparatus

2004-07-30

2008-12-09

Tolan, Edward (Department: 3725)

Metal deforming

By use of closed-die and coacting work-forcer

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

C072S352000, C072S353200, C072S377000

Reexamination Certificate

active

07461533

ABSTRACT:
A forging apparatus1A includes a swaging apparatus2equipped with a fixing die10, a guide20having an insertion passage22for inserting and holding a bar-shaped raw material5in a buckling preventing state, and a punch30. The raw material5is fixed to the fixing die10with the one end portion of the raw material protruded. The one end portion of the raw material5is inserted into the insertion passage22of the guide20. Thereafter, while pressing the raw material5with the punch30in the axial direction, in a state in which an entire peripheral surface of the exposed portion8of the raw material5exposed between the guide20and the fixing die10is not restrained, the guide20is moved in a direction opposite to the moving direction of the punch30so that a length of the exposed portion8of the raw material5becomes a budding limit length or less at a cross-sectional area of the exposed portion8of the raw material5. Thus, the one end portion of the raw material5is subject to swaging processing.

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U.S. Appl. No. 10/566,467, filed Jan. 31, 2006, Otaki et al.

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