FORGED CRANKSHAFT MANUFACTURING DEVICE AND MANUFACTURING METHOD

Title:

FORGED CRANKSHAFT MANUFACTURING DEVICE AND MANUFACTURING METHOD

Document Type and Number:

WIPO Patent Application WO/2016/186165

Kind Code:

A1

Abstract:

This forged crankshaft manufacturing device processes forgings from which flash has been removed. At least a portion of a plurality of rough crank arm portions in a forging have excess material portions which protrude out from the outer periphery of the side portions of the rough crank arm portions. The manufacturing device is provided with a first die (20) and a second die (30) which form a pair, a holding device (50) and a moving device (60). The first die (20) and the second die (30) subject the excess material portions to either a bending process or a crushing process. The holding device (50) holds at least some of a plurality of rough journal portions of the forging or at least some of a plurality of rough pin portions of the forging, in such a way that the direction of eccentricity of the rough pin portions is perpendicular to the direction of pressing by the first die (20) and the second die (30). The moving device (60) supports the holding device (50) in such a way that the holding device (50) can move in the direction of pressing.

Inventors:

YAMASHITA TOMOHISA (JP)
YABUNO KUNIHIRO (JP)
YOSHINO KEN (JP)
TAKAMOTO SHO (JP)
KUROKAWA HIROYUKI (JP)
TAMURA KENJI (JP)
OKUBO JUNICHI (JP)
NAKAYAMA KIYOSHI (JP)
HORIUCHI TORU (JP)

Application Number:

PCT/JP2016/064878

Publication Date:

November 24, 2016

Filing Date:

May 19, 2016

Export Citation:

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Assignee:

NIPPON STEEL & SUMITOMO METAL CORP (JP)
NIPPON STEEL & SUMIKIN RAILWAY TECH CO LTD (JP)

International Classes:

B21K1/08; B21J5/02; F16C3/08

Foreign References:

JPH03126253U	1991-12-19
JPH01241348A	1989-09-26
JPS63180336A	1988-07-25

Other References: