| 摘要 |
An addendum shape portion (20) of a panel material (11) is drawn by a drawin g portion (15) of a press forming die (7) by an amount equal to or less than t he limit to which the panel material (11) can be drawn, whereby a to-be-product portion (19) of the panel material (11) is roughly conformed to a forming fa ce (8) of a punch (9). In this state, the to-be-product portion (19) of the pan el material (11) is stretched or drawn. Accordingly, the cross section of the t o- be-product portion (19) is uniformly changed at the minimum level, which mak es it possible to produce, by press forming, a fender panel (1) made of aluminu m base alloy, which has a great plane dimension L and high quality. As a resul t, flexibility in the design of panel parts, which are formed by pressing the panel material (11) into shapes, is increased.
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