METHOD FOR MANUFACTURING TORSION BEAM AND TORSION BEAM

A means which can enhance fatigue strength of ear portions which are high fatigue risk parts in a torsion beam almost without bringing about disadvantages in terms of productivity and cost is provided. To be more specific, in manufacturing the torsion beam by forming a tubular body 1, a portion of t...

Full description

Saved in:
Bibliographic Details
Main Authors NAKAGAWA KINYA, KAWABATA YOSHIKAZU, SUZUKI KOJI, SONOBE OSAMU, HASHIMOTO YUJI, TOYODA SHUNSUKE, SATO AKIO
Format Patent
LanguageEnglish
Korean
Published 21.12.2011
Subjects
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
PERFORMING OPERATIONS
PUNCHING METAL
TRANSPORTING
VEHICLE SUSPENSION ARRANGEMENTS
VEHICLES IN GENERAL
WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
Online AccessGet full text

Cover

More Information
Summary:A means which can enhance fatigue strength of ear portions which are high fatigue risk parts in a torsion beam almost without bringing about disadvantages in terms of productivity and cost is provided. To be more specific, in manufacturing the torsion beam by forming a tubular body 1, a portion of the tubular body is formed into an approximately U-shape in cross section by crushing the portion of the tubular body in the radial direction and, thereafter, due to bending with a bottom line 3 set as a belly side of bending, a bending strain of 2 to 6% in the tube longitudinal direction on a tensile side is imparted to the ear portions 2.
Bibliography:Application Number: KR20117023939