| 摘要 |
<P>PROBLEM TO BE SOLVED: To achieve high strength of a frame component at low cost while maintaining mass productivity. <P>SOLUTION: The method for manufacturing the frame component having a plurality of wall portions includes a swelled portion forming step of forming a swelled portion in a region which is a connection portion of a first wall portion and a second wall portion adjacent to the first wall portion of a plate-shaped material of the frame component; a superimposed portion forming step of forming a superimposed portion 52 of the wall portion along the longitudinal direction of the swelled portion by crushing the swelled portion in the direction different from the swelling direction; and a curling step of curling up the superimposed portion 52 cylindrically by press-bending the superimposed portion 52. <P>COPYRIGHT: (C)2013,JPO&INPIT |
