Title:
METHOD OF MANUFACTURING ANNULAR BODY
Document Type and Number:
WIPO Patent Application WO/2003/086698
Kind Code:
A1
Abstract:
A method of manufacturing an annular body capable of making parallel the butted end faces (cut faces) of a blank material with each other when the blank material is rollingly formed and the faces thereof are butted against each other without bending, comprising the steps of drawing a rolled steel sheet from a rolled steel sheet (1) wound in a roll shape and cutting the rolled steel sheet to a specified dimension to form a blank material (2), tilting the cut faces (2a) by 1 to 3° with reference to the thickness direction of the blank material (2), reversing, to each other, the tilting directions of the cut faces (2a, 2a) at both ends, and rollingly forming the cut blank material (2) and butting the cut faces (2a, 2a) at both ends against each other, whereby since the cut faces (2a, 2a) at both ends are tilted by 1 to 3° in the reverse directions to each other, the cut faces (2a, 2a) can be butted against each other so as to be parallel with each other, and a tubular body (3) can be provided by laser-welding a butted part.
Inventors:
MITSUYOSHI HIROSHI (JP)
MASUDA YASUO (JP)
MASUDA YASUO (JP)
Application Number:
PCT/JP2003/004647
Publication Date:
October 23, 2003
Filing Date:
April 11, 2003
Export Citation:
Assignee:
HONDA MOTOR CO LTD (JP)
MITSUYOSHI HIROSHI (JP)
MASUDA YASUO (JP)
MITSUYOSHI HIROSHI (JP)
MASUDA YASUO (JP)
International Classes:
B21D51/16; B21D53/30; B23K26/21; B23K31/00; B23K101/30; (IPC1-7): B23K33/00; B23K26/42; B23K101/30; B60B21/00; B21D53/30
Foreign References:
JPH0947887A | 1997-02-18 | |||
JPH03275289A | 1991-12-05 |
Other References:
See also references of EP 1504844A4
Attorney, Agent or Firm:
Koyama, Yuu (5-7 Kojimach, Chiyoda-ku Tokyo, JP)
Download PDF: