Title:
NON-CIRCULAR PIPE SPINNING METHOD AND MUFFLER
Document Type and Number:
Japanese Patent JP2014163252
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a non-circular pipe spinning method enabling occurrence of wrinkles and cracks to be restricted and enabling a non-circular pipe to be processed.SOLUTION: An axis spaced apart from a center axis (C) of a non-circular pipe (72) and kept in parallel with the center axis (C) is defined as a virtual axis (V). The non-circular pipe spinning method comprises a first spinning step (S6) for rotating a rotatable rotary roller (84) around a center of the virtual axis (V) while pushing the rotary roller (84) against end segments (78, 79) of the non-circular pipe (72), and a second spinning step (S7) for rotating the rotary roller (84) around a center of the center axis (C) while pushing the rotary roller (84) against the end segments (78, 79) of the non-circular pipe (72).
Inventors:
YAMAMOTO AKIYOSHI
SHIKATA KENJI
MIWA KEN
HIRAMATSU KOICHI
NOJIRI ISAO
FUJITA TOMOYUKI
SUGI KAZUAKI
SHIKATA KENJI
MIWA KEN
HIRAMATSU KOICHI
NOJIRI ISAO
FUJITA TOMOYUKI
SUGI KAZUAKI
Application Number:
JP2013033232A
Publication Date:
September 08, 2014
Filing Date:
February 22, 2013
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
F01N13/18; B21D22/14; B21D53/84; B21H1/00; F01N1/00
Domestic Patent References:
| JP2001286955A | 2001-10-16 | |||
| JP2007120365A | 2007-05-17 | |||
| JP2009195922A | 2009-09-03 | |||
| JP2002361342A | 2002-12-17 | |||
| JP2003062620A | 2003-03-05 | |||
| JP2000317533A | 2000-11-21 | |||
| JP2001259749A | 2001-09-25 | |||
| JP2003010922A | 2003-01-15 |
Attorney, Agent or Firm:
House ON 健
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