To provide a hydraulic forming device with which occurrence of forming failure is suppressed and the stable shape of a formed good can be obtained.
This device is the hydraulic forming device for obtaining the formed good having a curved part from at least two metal plates 10, 20 and has a first forming die 30, movable die parts 51, a second forming die 40 and driving means for the movable die parts. The first forming die 30 has a forming surface 31 which is curved outward corresponding to a curved surface 11 which is curved inward in the curved part of the formed good and opening parts 32 formed on the forming surface 31. The movable die parts 51 are arranged so as to be freely advanced from the opening part 32 to the outside. The second forming die 40 has a forming surface 41 which is curved inward corresponding to the curved surface 21 which is curved outward in the curved part of the formed good and forms the metal plates 10, 20 by die-clamping linked with the first forming die 30. The driving means makes the movable die parts 51 advance and, after forming a projecting part 13 on the curved surface 11 which is curved in the inside of the metal plate 10 which is in contact with the movable die parts 51 by the hydraulic pressure P
COPYRIGHT: (C)2004,JPO&NCIPI
Umezawa Makoto
Naoto Taguchi
| JP2000061543A | ||||
| JP20019528A |
Atsushi Nogami
Yasuo Nara
Etsuko Saito
Katsuyuki Utani