| 摘要 |
PROBLEM TO BE SOLVED: To provide a workpiece conveyance system capable of positioning a workpiece W placed on a loading device with a high degree of accuracy to set it at a desired processing position of a press brake.SOLUTION: Marking is performed with an ultraviolet ray ink at prescribed two positions of a workpiece W when the workpiece W is subjected to blanking processing with a laser beam machine 104. The workpiece thus marked is placed on a loading device 103. When it is conveyed to a desired processing position of a press brake 101 by a robot arm 21, the workpiece W is subjected to photographing while being irradiated with an ultraviolet ray by an ultraviolet ray light 25a, and a marking point is detected from the shot image. Then, a detected marking point is compared with a reference marking point to detect a displacement amount at a position of the workpiece W, and the displacement amount is taken into consideration for positioning at conveyance by means of a robot arm 21. |
