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Title:
リング状部材の製造方法
Document Type and Number:
Japanese Patent JP5097769
Kind Code:
B2
Abstract:
A method of producing a ring-shaped member is provided in which a material loss is eliminated, the process cost can be reduced, and a ring-shaped member can be easily obtained from a pipe member by a small number of steps. The method includes steps of: inwardly projectingly shaping a flange portion 1c on an end portion of a metal-made pipe member 1; and cutting off the flange portion 1c from the pipe member 1, thereby obtaining a ring-shaped member 10.

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Inventors:
Toshiaki Kanemitsu
Katsuhiko Nakayama
Naoki Fujii
Kazuyuki Oda
Application Number:
JP2009503753A
Publication Date:
December 12, 2012
Filing Date:
March 12, 2007
Export Citation:
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Assignee:
Kanemitsu Co., Ltd.
International Classes:
B21D53/16; B21D19/10
Domestic Patent References:
JPS4988767A1974-08-24
JP3071559B22000-07-31
JPS5668536A1981-06-09
JPH01249231A1989-10-04
Attorney, Agent or Firm:
Shoji Suzue
Toshiyuki Kimura



 
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