| 摘要 |
PROBLEM TO BE SOLVED: To provide a press working method which can minimize a warpage of vertical wall sections even in the case of using a high-strength metal plate such as a high-tensile steel plate. SOLUTION: The invention relates to the press working method for drawing, with a die and a punch, a pressed metal component 1 comprising a hat-shaped head section 1a which is a formed part, vertical wall sections 1b adjoining the head section 1a, and flange sections 1c adjoining the vertical wall sections. In forming the vertical wall sections by thrusting the punch into the die, with the flange sections being pinched, the flange sections are divided longitudinally into restrained portions where the flow of the material to the vertical wall sections is restrained (or where beads 2 are provided) and unrestrained portions where the flow of the material to the vertical wall sections is promoted (or where beads 2 are not provided). COPYRIGHT: (C)2007,JPO&INPIT
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