Title:
METHOD FOR PRODUCING AUTOMOBILE WHEEL DISK
Document Type and Number:
Japanese Patent JP3950023
Kind Code:
B
Abstract:
PROBLEM TO BE SOLVED: To provide a method for producing an automobile wheel disk by which the weight saving of a wheel disk can be realized while properly maintaining its fatigue strength.
SOLUTION: In the method for producing an automobile wheel disk 5, a tray-shaped intermediate material C is formed by a preliminary drawing stage in such a manner that the conditions of (1) 65+0.1d<h<75+0.1d, and (2) (b+c)/2-30<a<(b+c)/2-10 are satisfied, so that the radiused part 15 in a hub face can be thickened by a shape drawing stage. Thus, the thickness of a planar base material B can be set previously in consideration of the ratio of the radiused part 15 in the hub face to be thickened, so that the wheel disk 5 can be weight-saved while properly maintaining the fatigue strength of the radiused part 15 in the hub face.
Inventors:
Yogo, Tokiyasu
Application Number:
JP2002000240577
Publication Date:
April 27, 2007
Filing Date:
August 21, 2002
Export Citation:
Assignee:
CHUO MOTOR WHEEL CO LTD
International Classes:
B21D53/26; B60B3/04; B21D22/26; B21D53/26; B60B3/00; B21D22/26; (IPC1-7): B21D53/26; B21D22/26; B60B3/04
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