METHOD OF MANUFACTURING LIGHT-ALLOY FORGED WHEEL AND THE WHEEL

WIPO Patent Application WO/2001/039909

A1

A method of efficiently manufacturing a light-alloy forged wheel having a disk with curved design pattern, comprising the steps of forming a whole or a part of fillet parts (6a) and (6b) of a design on a disk surface of the wheel by forging beforehand to provide a disk (1a), and cutting hatched parts (7) along the fillet parts by milling to provide an opening part or irregularities so as to add a three-dimensional design, the depth of forming of the fillet parts by forging being desirably approx. 2 to 10 mm and approx. 1/5 to 1/2 of the overall thickness of the forging, whereby a milling time by a machining center can be shortened remarkably.

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Yoshimura, Katsunori (4-27, Suehiro 4-chome Kumagaya-shi, Saitama, 360-0031, JP)

PCT/JP2000/008409

June 07, 2001

November 29, 2000

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WASHI KOSAN CO., LTD. (15-21, Takanawa 2-chome Minato-ku Tokyo, 108-0074, JP)
Yoshimura, Katsunori (4-27, Suehiro 4-chome Kumagaya-shi, Saitama, 360-0031, JP)

B21J5/00; B21K1/32; B21K1/38; B23C3/00; B23P23/04; B60B3/04; (IPC1-7): B21K1/32; B23P15/00; B23C3/00; B60B3/02; B60B3/04

Suzuye, Koichi (Room 607 Osaka Fukokuseimei Building 2-4 Komatsubaracho Kita-ku Osaka-shi, Osaka, 530-0018, JP)

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