Title:
AUTOFRETTAGE MACHINING DEVICE
Document Type and Number:
WIPO Patent Application WO/2013/084533
Kind Code:
A1
Abstract:
Provided is a solution to various limitations caused by product shape and the like. An autofrettage machining device characterized in comprising: a workpiece that is sealed off except for the workpiece end opening and in which a pressurized chamber is filled with a hydraulic oil via the workpiece end opening; a jig capable of being attached and detached from the workpiece, having an internal direct flow channel, and in which the direct flow channel is in communication without leakage with the workpiece end opening via a seal part; a piston for forming a gap having a predetermined average gap size with the inner wall of the direct flow channel provided inside the jig; and a pressurizing unit for driving the piston.
Inventors:
TATEYAMA KENTA (JP)
KONDO FUMIO (JP)
HARA YUUSUKE (JP)
KONDO FUMIO (JP)
HARA YUUSUKE (JP)
Application Number:
PCT/JP2012/068117
Publication Date:
June 13, 2013
Filing Date:
July 17, 2012
Export Citation:
Assignee:
DENSO CORP (JP)
TATEYAMA KENTA (JP)
KONDO FUMIO (JP)
HARA YUUSUKE (JP)
TATEYAMA KENTA (JP)
KONDO FUMIO (JP)
HARA YUUSUKE (JP)
International Classes:
B21D26/033; F02M55/02; C21D7/12
Foreign References:
| JP2009052452A | 2009-03-12 | |||
| JP2002310034A | 2002-10-23 | |||
| JPH10318081A | 1998-12-02 | |||
| DE102006054440B3 | 2007-12-13 | |||
| DE102006054440B3 | 2007-12-13 | |||
| JP2004092551A | 2004-03-25 | |||
| JP2009203843A | 2009-09-10 | |||
| JP2010229924A | 2010-10-14 |
Other References:
See also references of EP 2789409A4
TRIBOLOGIST, vol. 49, no. 9, 2004, pages 720 - 721
TRIBOLOGIST, vol. 49, no. 9, 2004, pages 720 - 721
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
Aoki 篤 (JP)
Aoki 篤 (JP)
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Claims: