| 摘要 |
PURPOSE:To reduce error in the positional correction value due to shift in the positioning angle of a circuit board by providing each of a plurality of position recognition blocks with a reference mounting position and shortenrng the maximum distance between the reference mounting position and each mounting position in the block. CONSTITUTION:Each of a plurality of circuit boards P1, P2 is divided into four position recognition blocks B1,...,B4 having reference mounting positions B1-1,..., B4-1,. In the first step, for example, the reference mounting position B1-1 in the first position recognition block B1 of a first board P1 is recognized to obtain a position correcting value. The position correcting value is then determined for each mounting position based on the position correcting value thus obtained, and the positional relationship between the reference mounting position B1-1 and each mounting position in the first position recognition block B1. Finally, a part is mounted at each mounting position in the first position recognition block B1 of the first board P1 using the position correcting values thus obtained. This method shortens the maximum distance between the reference mounting position and each mounting position in the position recognition block. |
