Title:
METHOD AND DEVICE FOR FORMING ELLIPTICAL HOLLOW CYLINDER
Document Type and Number:
WIPO Patent Application WO/2015/087752
Kind Code:
A1
Abstract:
According to this method for forming an elliptical hollow cylinder, a portion of the elliptical hollow cylinder is formed into the shape of a circular tube by means of a spinning process. The forming method comprises: a first forming step in which said portion of the elliptical hollow cylinder is formed into the shape of a circular tube using an inside roller; and a second forming step in which the diameter of said portion that has been formed into the shape of a circular tube by means of the first forming step is reduced using an outside roller. By adopting this forming method it is possible to reduce the time required for a portion of an elliptical hollow cylinder to be formed into the shape of a circular tube by means of a spinning process.
Inventors:
KAWASHIMA DAI (JP)
HIOKI SHINJI (JP)
TOKITA SHUJI (JP)
HIOKI SHINJI (JP)
TOKITA SHUJI (JP)
Application Number:
PCT/JP2014/081953
Publication Date:
June 18, 2015
Filing Date:
December 03, 2014
Export Citation:
Assignee:
CALSONIC KANSEI CORP (JP)
International Classes:
B21D41/04; B21D22/14; B21D53/84
Foreign References:
| JP2002066665A | 2002-03-05 | |||
| JP2000246353A | 2000-09-12 | |||
| JP2003230917A | 2003-08-19 | |||
| JPH05226U | 1993-01-08 | |||
| JPS63309333A | 1988-12-16 | |||
| US20040011105A1 | 2004-01-22 |
Attorney, Agent or Firm:
MIYOSHI, Hidekazu et al. (JP)
Hidekazu Miyoshi (JP)
Hidekazu Miyoshi (JP)
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