| 摘要 |
PROBLEM TO BE SOLVED: To correct the error to be caused when a flexible belt type work material without rigidity is pressed continuously and obtain the precision of a required shape. SOLUTION: An error measuring device 8 is set taking a distance between a punching hole with a metal mold to be determined by a distance between press shapes and attaching position of a cope 92 and other punching hole as a reference value. From the image data on the prescribed punching hole to be taken in after photographing using a CCD camera 8C, the data on the center position of the fixed punching hole is calculated by an arithmetic means 84 in the error measuring device. The distance between one punching hole and another punching hole from the center position data and the distance between desired press shapes are calculated by a distance measuring means 843. In an error calculation means, an error is calculated from the data determined in the distance measuring means and the reference value. In a correction value calculation means 845, the pitch correction value of a feeder 3 based on the error during the period of prescribed sampling is calculated. A control device 7 corrects the pitch to be set based on the correction value and controls the feeder.
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