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Title:
UPSETTING PROCESSING METHOD OF RAW MATERIAL HAVING PIPE-SHAPED PART
Document Type and Number:
Japanese Patent JP2014094384
Kind Code:
A
Abstract:

To provide an upsetting processing method of a raw material having a pipe-shaped part, capable of easily forming a flange in an opening end part of the raw material by using a spinning machine, without requiring large-scaled equipment even in the raw material having the pipe-shaped part comparatively thick in a wall thickness.

The upsetting processing method is applied to a raw material 2 having a pipe-shaped part 2b, and can form a flange 13 only on the outside in the radial direction in the opening end part of the raw material 2 by fitting a mandrel 12 inside the pipe-shaped part 2b of the raw material 2 by being plastically deformed by compressing the opening end part in the pipe-shaped part 2b of the raw material in the axial direction by a pressing roller 6, while rotating the raw material 2 around its axis.


Inventors:
TAKADA YOSHIAKI
NAKAO TAKESHI
Application Number:
JP2012245664A
Publication Date:
May 22, 2014
Filing Date:
November 07, 2012
Export Citation:
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Assignee:
NIPPON SPINDLE MFG CO LTD
International Classes:
B21H1/18
Domestic Patent References:
JP2006167740A2006-06-29
JP2010099729A2010-05-06
JPS5395156A1978-08-19
JP3078055U2001-06-22
JP2001259774A2001-09-25
JPH10146623A1998-06-02
Foreign References:
US2310158A1943-02-02
Attorney, Agent or Firm:
Osamu Mori
Tsutomu Inoue