Title:
成形方法及び成形装置
Document Type and Number:
Japanese Patent JP4822928
Kind Code:
B2
Abstract:
The present invention relates to a molding method of reducing a diameter in an end portion of a metal tube to be characterized in having a step of rotating a metal tube around an axial core or rotating a frame in which a plurality of ring-shaped tools are arranged, and moving the axial core of the ring-shaped tool away from the axial core of the metal tube while moving the metal tube or the frame, thereby reducing the diameter in an end portion of the metal tube.
Inventors:
Koide Issei
Katsumi Okamoto
Katsumi Okamoto
Application Number:
JP2006138793A
Publication Date:
November 24, 2011
Filing Date:
May 18, 2006
Export Citation:
Assignee:
Yutaka Giken Co., Ltd.
International Classes:
B21D41/04
Domestic Patent References:
| JP11151535A | ||||
| JP61027109A |
Attorney, Agent or Firm:
Nakagawa International Patent Office
Hiroyuki Nakagawa
Yuji Oishi
Kei Iwata
Hiroyuki Nakagawa
Yuji Oishi
Kei Iwata