| 摘要 |
PURPOSE: To obtain a proper correction position even if a substrate is distorted by operating a correction position of a part mounting place based on relative position relation of the theoretical position of a part mounting position to the theoretical position of each of four or more measurement points and a measured position of the measurement points. CONSTITUTION: A printed board 3 is provided with a fiducial mark 40 at four or more measurement points in advance. The coordinates of a theoretical position of each measurement point provided with the fiducial mark 40 and the coordinates of a theoretical point of a part mounting place are stored in a memory part 34 of a control device 30 in advance. Then, each fiducial mark 40 is imaged one by one by a substrate recognition camera 27 and each position is measured. After the measured position of the measurement points is obtained, a corrected position of a part mounting place is operated based on a coordinate conversion parameter obtained from relative position relation of the theoretical position of a part mounting place to the theoretical position of each measurement point and the measured position of each measurement point. |
