Title:
MOLDING DEVICE FOR MATERIAL FOR FINISHING FORGED CRANKSHAFT FOR V6 ENGINE AND PRODUCTION METHOD FOR FORGED CRANKSHAFT FOR V6 ENGINE USING SAME
Document Type and Number:
WIPO Patent Application WO/2015/133151
Kind Code:
A1
Abstract:
Provided is a molding device that holds a rough journal section (Ja) of a rough material (4) using a journal mold (10U, 10B), that moves the journal mold (10U, 10B) and a pin mold (12) in the axial direction toward a fixed mold (9U, 9B) from a state in which the pin mold (12) is applied to a rough pin section (Pa), and that moves the pin mold (12) in a direction that is perpendicular to the axial direction. As a result, a weight-equipped rough arm section (Aa) is sandwiched and pressed in the axial direction until the thickness thereof is reduced to the thickness of a weight-equipped arm section of a forged crankshaft, and the rough pin section (Pa) is pressed in the direction that is perpendicular to the axial direction until the eccentricity thereof is increased to the eccentricity of a pin section of the forged crankshaft.
Inventors:
OKUBO JUNICHI (JP)
TAMURA KENJI (JP)
YOSHIDA KUNIHIRO (JP)
TAMURA KENJI (JP)
YOSHIDA KUNIHIRO (JP)
Application Number:
PCT/JP2015/001213
Publication Date:
September 11, 2015
Filing Date:
March 06, 2015
Export Citation:
Assignee:
NIPPON STEEL & SUMITOMO METAL CORP (JP)
International Classes:
B21K1/08; B21J5/08
Foreign References:
| JP2011078995A | 2011-04-21 | |||
| JPH08121539A | 1996-05-14 | |||
| JP2002168229A | 2002-06-14 | |||
| JP2012161819A | 2012-08-30 | |||
| KR100818008B1 | 2008-03-31 |
Attorney, Agent or Firm:
ASCEND IP LAW FIRM (JP)
アセンド patent business corporation (JP)
アセンド patent business corporation (JP)
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