METHOD OF FORMING TUBULAR MEMBER

Title:

METHOD OF FORMING TUBULAR MEMBER

Document Type and Number:

WIPO Patent Application WO/2003/035299

Kind Code:

A1

Abstract:

A method of forming a tubular member, comprising a preliminary forming method for expanding (bulging) and bending a tubular raw material (Pa) by first and second metal molds (M1, M2) and a final forming method for collapsing a preliminarily formed tube (Pc) in a specified cross sectional shape by a third metal mold (M3), wherein the preliminary forming is performed by the first and second metal molds (M1, M2) heated to the recrystallization temperature of the tubular raw material or higher, and the final formation is performed by the third metal mold (M3) heated to the recrystallization temperature of the tubular raw material or below, whereby the tubular member of modified cross−section having expanded tube parts and bent parts can be accurately formed of an aluminum alloy tubular raw material with high quality, and the productivity thereof can be remarkably improved.

More Like This:

JP3473314	PRODUCTION OF FIXING ROLL
WO/1997/034789	WINDSCREEN WIPER SYSTEM FOR VEHICLES AND METHOD OF MANUFACTURING IT
WO/1994/023860	PRODUCTION MANDRELS AND JAWS FOR STRETCH FORMING

Inventors:

MIYANAGA KENJI (JP)
MARUYAMA MANABU (JP)
HORI IZURU (JP)
KANAI YUJI (JP)
MIZUTANI KOUKI (JP)

Application Number:

PCT/JP2002/011009

Publication Date:

May 01, 2003

Filing Date:

October 23, 2002

Export Citation:

Click for automatic bibliography generation Help

Assignee:

HONDA MOTOR CO LTD (JP)
MIYANAGA KENJI (JP)
MARUYAMA MANABU (JP)
HORI IZURU (JP)
KANAI YUJI (JP)
MIZUTANI KOUKI (JP)

International Classes:

B21D26/033; B21D26/047; B21D51/16; (IPC1-7): B21D26/02; B21D51/16

Domestic Patent References:

WO1992013653A1

1992-08-20

Foreign References:

EP0930109A2	1999-07-21
JPH06142781A	1994-05-24
JPH11309521A	1999-11-09
JP2002126827A	2002-05-08
JP2002126826A	2002-05-08
JP2002018533A	2002-01-22
EP1063029A1	2000-12-27

Other References: