COUPLED TORSION BEAM TYPED SUSPENSION IN VEHICLE AND THE MANUFACTURING METHOD THEREOF

• Main Authors: YUN, SEUNG JONG, JANG, SANG GIL, CHO, CHEOL HWAN, JANG, JUNG HO
• Format: Patent
• Language: English; Korean
• Published: 05.03.2014
• Subjects: CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; MACHINE TOOLS; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; PUNCHING METAL; SOLDERING OR UNSOLDERING; TRANSPORTING; VEHICLE SUSPENSION ARRANGEMENTS; VEHICLES IN GENERAL; WELDING; WORKING BY LASER BEAM; WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL

The present invention relates to a coupled torsion beam type suspension and a manufacturing method thereof and, more specifically, to a coupled torsion beam type suspension having a torsion beam integrated with a torsion bar and a manufacturing method thereof. The manufacturing method of the coupled torsion beam type suspension uses a former unit having multiple roll formers and comprises: a step of forming a curved surface to make the center part of a torsion beam material protrude in a direction where both ends of the torsion beam material are bent while forming bent surfaces to make both ends of the torsion beam vertical at a right angle (S131); a step of pressing the curved surface of the torsion beam material until the curved surface passes a virtual line connecting both ends of the torsion beam after the step S131 (S132); and a step of making the curved surface protrude in the opposite direction of the bent surfaces by pressing the bent surfaces in a direction of facing each other until both ends are close to each other after the step S132 (S133).