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Patent Searching and Data


Title:
MANUFACTURING METHOD FOR TUBULAR MEMBER
Document Type and Number:
WIPO Patent Application WO/2018/139443
Kind Code:
A1
Abstract:
In this manufacturing method for a tubular member, by pressing side surfaces of a tubular member from outside, the shape of a cross-section that is perpendicular to a direction in which the tubular member extends is molded into an oblong shape that extends in a predetermined direction. An interior mold, said interior mold coming into contact with an inner surface of the tubular member that is being pressed such that the cross-section becomes the oblong shape, is inserted into an interior of the tubular member, and the interior mold is slid from one end of the tubular member to the other end. At such time, when the interior mold is viewed in the sliding direction, one or a plurality of contact regions where the inner surface of the tubular member and the interior mold come into contact are in a condition of having spread to the entire area of the inner surface.

Inventors:
MANABE TAKAHIRO (JP)
Application Number:
PCT/JP2018/001955
Publication Date:
August 02, 2018
Filing Date:
January 23, 2018
Export Citation:
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Assignee:
FUTABA IND CO LTD (JP)
International Classes:
B21D51/10; B21D53/84
Foreign References:
JPS4833139B11973-10-12
JP2011121112A2011-06-23
JPS6267606U1987-04-27
Attorney, Agent or Firm:
NAGOYA INTERNATIONAL PATENT FIRM (JP)
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