| 摘要 |
PROBLEM TO BE SOLVED: To easily bend a closed section with excellent accuracy when forming the closed section by bending an end of a dissimilar U-shaped part, and to manufacture a formed body having the closed section as one component out of one material. SOLUTION: The method for manufacturing a formed body includes: a preparing step of preparing a formed body having a dissimilar U-shaped part with its bottom surface showing a recessed curved surface which is bend in an inwardly recessed manner along its longitudinal direction; an end bending step of forming a bent end by bending an end of a side surface part by using a core device 7; and a joining step of forming a closed section shape by joining bent ends with each other. The core device 7 has a core body 71 having an edge part 715 on a boundary corner part between side abutting surfaces 712, 713 and an end abutting surface 717, and a side surface part expansion-supporting mechanism part 73 for expanding a pair of right and left side face parts in the separating direction from each other after forming the bent ends. COPYRIGHT: (C)2011,JPO&INPIT |
