| 摘要 |
<P>PROBLEM TO BE SOLVED: To release stress on a bead even when crease formation starts on the periphery of an object in a press die. <P>SOLUTION: The press die 1 includes the bead 7 for nipping and holding the periphery of the object when pressing a portion P to be pressed of the object. The bead 7 includes a pair of first vertical wall surfaces 5a and 6a located closest to the portion P to be pressed, and facing each other across the periphery. A first notch part 8a is formed on the first vertical wall surface 6a located far from the portion P to be pressed. This configuration releases the stress applied to the bead 7 since the first notch part 8a serves as a space for the crease around the periphery to escape even a crease starts forming around the periphery at the bead 7. <P>COPYRIGHT: (C)2013,JPO&INPIT |
