Title:
SLEEVE FOR PARTIAL DIAMETER ENLARGEMENT
Document Type and Number:
WIPO Patent Application WO/2016/152162
Kind Code:
A1
Abstract:
A sleeve is provided for a partial diameter enlargement in which a portion of a workpiece between a pair of holder units supporting both end portions of the workpiece is enlarged by applying pressure to the workpiece in a direction of an axis of the workpiece while at the same time applying energy to the workpiece in a direction intersecting the axis to form a diameter-enlarged portion between the holder units. The sleeve is provided in at least one of the holder units to support at least one of the end portions of the workpiece in a fitted manner. The sleeve has at least two portions, one of which contacting the diameter-enlarged portion when the partial diameter enlargement is completed, so that only the portion that contacts the diameter-enlarged portion can be replaced.
Inventors:
KUWAHARA YOSHITAKA (JP)
MORI KAZUKI (JP)
OKAMOTO MITSUHIRO (JP)
IKUTA FUMIAKI (JP)
MORI KAZUKI (JP)
OKAMOTO MITSUHIRO (JP)
IKUTA FUMIAKI (JP)
Application Number:
PCT/JP2016/001694
Publication Date:
September 29, 2016
Filing Date:
March 23, 2016
Export Citation:
Assignee:
NETUREN CO LTD (JP)
International Classes:
B21J5/08; B21K1/12
Domestic Patent References:
| WO2015141865A1 | 2015-09-24 |
Foreign References:
| JP2009125789A | 2009-06-11 | |||
| JP2013132650A | 2013-07-08 | |||
| JP2013166168A | 2013-08-29 | |||
| JP2011156568A | 2011-08-18 |
Attorney, Agent or Firm:
TAKAMATSU, Takeshi et al. (JP)
Download PDF: