PURPOSE: To execute press bending and notching by one press die by forming a first working surface of the lower die to the surface exceeding 90° against the supporting surface for supporting a panel.

CONSTITUTION: When the upper die 21 descends, the part protruded from the supporting surface 12 of an outer panel 41 is bent downward by the upper die 21. As a result, in the outer panel 41, a bend flange part 42 is formed. When the upper die 21 further descends, the bend flange part 42 is inserted and pressed by a first working surface 14 of the lower die 11 and a second working surface 22 of the upper die 21. That is, a first working surface of the lower die 11 is formed to the surface exceeding 90° against the supporting surface 12 for supporting the outer panel 41. Therefore, the bend flange part 42 can be pressed against a first working surface 14 by a second working surface 22 of the upper die 21, and since a notching part 15 is provided on a first working surface 14 of the lower die 11, a thin notch 44 whose plate thickness becomes T1 is formed in the bend flange part 42.