To provide a vehicle body panel forming method capable of forming a blank in which one side is stepped, the other side is smooth, and the warp is small by a rolling method, and forming a vehicle body panel of excellent dimensional accuracy.
In the vehicle body panel forming method for obtaining the vehicle body panel by forming a thin-walled part 28 by a rolling device 24 in the center 28 of the blank 11, and forming the blank having the thin-walled part in the center to a predetermined shape, the rolling device 24 rolls a three- layered blank 23 with an intermediate blank 12 between two blanks 11 and 11. The hardness of the intermediate blank is set to be equal to that of a work roll. Since the intermediate blank 12 is held between the blanks, the stress distribution in the plastically deformed thin-walled part 28 is substantially uniform, and the blank with small warp can be formed.
| JPS60196204 | EDGING METHOD OF PLATE MATERIAL |
| JPH02295602 | PRODUCTION OF CORRUGATED STEEL SHEET |
SANO TAKESHI
NUMANO SEISHIN
| JPH0599823A | 1993-04-23 | |||
| JPS6021108A | 1985-02-02 | |||
| JPS61172602A | 1986-08-04 | |||
| JPH0599823A | 1993-04-23 | |||
| JPS6021108A | 1985-02-02 | |||
| JPS61172602A | 1986-08-04 |