Title:
SPINNING METHOD
Document Type and Number:
WIPO Patent Application WO/2010/084788
Kind Code:
A1
Abstract:
A spinning method uses a working roller which is provided on the outer periphery of a pipe body to be worked and revolves around and relative to the pipe body, and the method reduces the diameter of the pipe body by reciprocating the working roller in the axis direction while moving the working roller in the radial direction of the pipe body. In the above-mentioned diameter reducing operation, a wound body consisting of an elastic plate-like material, such as a spring steel sheet, is inserted and disposed, as the core, on the inner side of that portion of the pipe body which is to be reduced in diameter.
Inventors:
KARINO, Shinobu (Nisshin Steel Co. Ltd., 5, Ishizunishi-machi, Nishi-ku, Sakai-sh, Osaka 32, 〒5928332, JP)
狩野 忍 (〒32 大阪府堺市西区石津西町５番地 日新製鋼株式会社 技術研究所内 Osaka, 〒5928332, JP)
ANDO, Akihiro (4-1, Marunouchi 3-chome, Chiyoda-k, Tokyo 66, 〒1008366, JP)
狩野 忍 (〒32 大阪府堺市西区石津西町５番地 日新製鋼株式会社 技術研究所内 Osaka, 〒5928332, JP)
ANDO, Akihiro (4-1, Marunouchi 3-chome, Chiyoda-k, Tokyo 66, 〒1008366, JP)
Application Number:
JP2010/050026
Publication Date:
July 29, 2010
Filing Date:
January 05, 2010
Export Citation:
Assignee:
NISSHIN STEEL CO., LTD. (4-1 Marunouchi 3-chome, Chiyoda-ku Tokyo, 66, 〒1008366, JP)
日新製鋼株式会社 (〒66 東京都千代田区丸の内三丁目４番１号 Tokyo, 〒1008366, JP)
KARINO, Shinobu (Nisshin Steel Co. Ltd., 5, Ishizunishi-machi, Nishi-ku, Sakai-sh, Osaka 32, 〒5928332, JP)
狩野 忍 (〒32 大阪府堺市西区石津西町５番地 日新製鋼株式会社 技術研究所内 Osaka, 〒5928332, JP)
日新製鋼株式会社 (〒66 東京都千代田区丸の内三丁目４番１号 Tokyo, 〒1008366, JP)
KARINO, Shinobu (Nisshin Steel Co. Ltd., 5, Ishizunishi-machi, Nishi-ku, Sakai-sh, Osaka 32, 〒5928332, JP)
狩野 忍 (〒32 大阪府堺市西区石津西町５番地 日新製鋼株式会社 技術研究所内 Osaka, 〒5928332, JP)
International Classes:
B21D41/04; B21D22/16; B21D53/84
Attorney, Agent or Firm:
SOGA, Michiharu et al. (S. Soga & Co, 8th Floor Kokusai Building, 1-1, Marunouchi 3-chome, Chiyoda-k, Tokyo 05, 〒1000005, JP)
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