Title:
DEVICE FOR MANUFACTURING FORGED CRANKSHAFT
Document Type and Number:
WIPO Patent Application WO/2016/182065
Kind Code:
A1
Abstract:
A device for manufacturing a forged crankshaft is provided with upper and lower pair of molds (10) and a first tool (20). The molds (10) perform processing for deforming first excessively thick parts (Aaa, Aba) and increasing the thickness of both side parts in the vicinity of a rough pin part (P') for a rough crank arm part (A'). The first tool (20) is accommodated in an opening part (10b) of the molds (10) and comes into contact with the surface except for a region on both side parts in the vicinity of a rough pin part (P') in the surface on a rough journal part (J') side of the rough crank arm part (A'). The molds (10) and the first tool (20) each have a first guide part for guiding the first tool (20) from a retracted position to a contact position. At least one of the upper surface (20b) and the lower surface (20c) of the first tool (20) is provided with the first guide part.
Inventors:
YAMASHITA TOMOHISA (JP)
TAKAMOTO SHO (JP)
KUROKAWA HIROYUKI (JP)
YABUNO KUNIHIRO (JP)
YOSHINO KEN (JP)
TAMURA KENJI (JP)
OKUBO JUNICHI (JP)
TAKAMOTO SHO (JP)
KUROKAWA HIROYUKI (JP)
YABUNO KUNIHIRO (JP)
YOSHINO KEN (JP)
TAMURA KENJI (JP)
OKUBO JUNICHI (JP)
Application Number:
PCT/JP2016/064308
Publication Date:
November 17, 2016
Filing Date:
May 13, 2016
Export Citation:
Assignee:
NIPPON STEEL & SUMITOMO METAL CORP (JP)
International Classes:
B21K1/08; F16C3/08
Domestic Patent References:
| WO2015056440A1 | 2015-04-23 | |||
| WO2015075924A1 | 2015-05-28 | |||
| WO2016009620A1 | 2016-01-21 |
Foreign References:
| JP2015071179A | 2015-04-16 | |||
| JP2015186815A | 2015-10-29 |
Other References:
See also references of EP 3296036A4
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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