| 摘要 |
PROBLEM TO BE SOLVED: To improve production efficiency in press forming and to reduce maintenance cost and maintenance frequency. SOLUTION: Rotating speed of a main motor 61 of a second press 3 is controlled such that an angular difference between a press angle of a first press 2 and a press angle of a second press 3 is constant. Further, when a workpiece is unloaded from the first press 2, a workpiece transportation device 10 is controlled based on a press angle of the first press 2. When the work is loaded into the second press 3, the workpiece transportation device 10 is controlled based on a press angle of the second press 3. Further, when the workpiece is transported, the workpiece transportation device 10 is controlled based on a signal from a transportation device control portion 31 for controlling the work transportation device. COPYRIGHT: (C)2006,JPO&NCIPI
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