US 7,523,554 B2
Method of manufacturing a wheel rim
Shizuo Kimura, Saitama (Japan); Kenzo Takeda, Utsunomiya (Japan); Ikuo Kato, Kumagaya (Japan); Yukio Uchiyama, Higashimtasuyama (Japan); Tadashi Goto, Hidaka (Japan); Nobuyuki Kakiya, Tochigi-ken (Japan); Kiyoshi Satou, Hamamatsu (Japan); Naotake Marui, Hamamatsu (Japan); Shinichi Ohnaka, Utsunomiya (Japan); Tatsuo Yamanaka, Hamamatsu (Japan); Jin Fukuda, Tochigi-ken (Japan); Taisei Wakisaka, Tochigi-ken (Japan); and Haruo Machida, Saitama-ken (Japan)
Assigned to Honda Motor Co., Ltd., Tokyo (Japan)
Appl. No. 10/560,835
PCT Filed Jun. 17, 2004, PCT No. PCT/JP2004/008543
§ 371(c)(1), (2), (4) Date May 31, 2006,
PCT Pub. No. WO2004/112985, PCT Pub. Date Dec. 29, 2004.
Claims priority of application No. 2003-171828 (JP), filed on Jun. 17, 2003; application No. 2003-172930 (JP), filed on Jun. 18, 2003; application No. 2003-172935 (JP), filed on Jun. 18, 2003; application No. 2003-270938 (JP), filed on Jul. 04, 2003; application No. 2003-274042 (JP), filed on Jul. 14, 2003; and application No. 2003-289148 (JP), filed on Aug. 07, 2003.
Prior Publication US 2006/0265876 A1, Nov. 30, 2006
Int. Cl. B21K 1/38 (2006.01); B21D 39/02 (2006.01)
U.S. Cl. 29—894.353  [29/894.322; 29/557; 228/158; 72/52] 5 Claims
OG exemplary drawing
 
1. A method of manufacturing a wheel rim by bringing end faces of a workpiece into abutment against each other to form a hollow cylindrical body and forming a circumferential recess which is depressed from an outer circumferential wall of said hollow cylindrical body toward an inner circumferential wall thereof, said method comprising the steps of providing protrusions disposed near ends of a joined area of said hollow cylindrical body and extending in a joining direction, and then pressing said outer circumferential wall of said hollow cylindrical body having the protrusions to form said recess, such that the pressed hollow cylinder has substantially flush circumferential edges.