Title:
管端の成形方法
Document Type and Number:
Japanese Patent JP4647140
Kind Code:
B2
Abstract:
At the time of spinning a tip reduced portion 3, an angle of inclination of the outer periphery of the tip reduced portion 3 with respect to an axis of a tube stock 2 is increased on a center side of the tube stock 2 and reduced on an end edge side thereof. By this, a generating line of an outer peripheral surface of the tip reduced portion 3 is made into a form like a center recessed curved surface.
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| JP2018103221 | MATERIAL PROCESSING METHOD OF SPINNING MACHINE |
Inventors:
Akihiro Endo
Application Number:
JP2001192640A
Publication Date:
March 09, 2011
Filing Date:
June 26, 2001
Export Citation:
Assignee:
Sakamoto Industry Co., Ltd.
International Classes:
B21D22/14; B21D41/04; F01N13/18; B21D51/16; B21D53/84
Domestic Patent References:
| JP2000317533A | ||||
| JP2001030019A | ||||
| JP2000094069A |
Attorney, Agent or Firm:
Noboru Watanabe
Harada Sanjugi
Harada Sanjugi