ROLL FORMING APPARATUS AND WHEEL RIM MANUFACTURING METHOD OF USING THE SAME

• Main Authors: KO, KANG HEE, KIM, TAEK EUI
• Format: Patent
• Language: English; Korean
• Published: 02.09.2010
• Subjects: CHEMISTRY; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS,WHEELS, RINGS, BARRELS, BALLS; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; PERFORMING OPERATIONS; PUNCHING METAL; TRANSPORTING; WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL

PURPOSE: A roll forming apparatus and a wheel rim manufacturing method using the same are provided to improve the strength and durability of a wheel rim without increasing the thickness of a steel sheet. CONSTITUTION: A roll forming apparatus comprises an inner molding roll unit(10) and an outer molding roll unit(20). The inner molding roll unit comprises a plurality of first rolls(11) which are arranged at regular interval in a circular form and have inner paths, respectively. The outer molding roll unit comprises a plurality of second rolls(21) which are arranged at regular interval in a circular form and have inner paths. A gap is formed between the second rolls and the exterior of the inner molding roll unit, where a steel sheet is inserted.