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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 (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
YABUNO, Kunihiro (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
YOSHINO, Ken (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
TAKAMOTO, Sho (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
KUROKAWA, Hiroyuki (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
TAMURA, Kenji (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
OKUBO, Junichi (6-1 Marunouchi 2-chome, Chiyoda-k, Tokyo 71, 〒1008071, JP)
NAKAYAMA, Kiyoshi (1-109, Shimaya 5-chome, Konohana-ku, Osaka-sh, Osaka 24, 〒5540024, JP)
HORIUCHI, Toru (1-109, Shimaya 5-chome, Konohana-ku, Osaka-sh, Osaka 24, 〒5540024, JP)
Application Number:
JP2016/064878
Publication Date:
November 24, 2016
Filing Date:
May 19, 2016
Export Citation:
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Assignee:
NIPPON STEEL & SUMITOMO METAL CORPORATION (6-1 Marunouchi 2-chome, Chiyoda-ku Tokyo, 71, 〒1008071, JP)
NIPPON STEEL & SUMIKIN RAILWAY TECHNOLOGY CO., LTD. (1-109, Shimaya 5-chome Konohana-ku, Osaka-sh, Osaka 24, 〒5540024, JP)
International Classes:
B21K1/08; B21J5/02; F16C3/08
Foreign References:
JPH03126253U1991-12-19
JPH01241348A1989-09-26
JPS63180336A1988-07-25
Attorney, Agent or Firm:
ASCEND IP LAW FIRM (5-17, Dojima 1-chome Kita-ku, Osaka-sh, Osaka 03, 〒5300003, JP)
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