| 摘要 |
PROBLEM TO BE SOLVED: To form a flange extension portion, by one press action, that further extends bending from a flange portion of a vehicular seat frame.SOLUTION: The flange extension portion 13A constituting a side frame 10 of a seat back frame is formed by setting a side surface portion 11 and the flange portion 12A on a tilting supporting surface P2a of a drag P2 of a press machine in a surface-abutting state, and pressing the flange portion 12A with a cope P1. An angle A2 between the flange extension portion 13A and a line L1 vertical to the side surface portion 11 is set to be smaller than an angle A1 between a press clamping direction Pr1 and the vertical line L1. |
