SURFACE MOUNTING APPARATUS, AND CORRECTION COEFFICIENT CALCULATING METHOD OF SURFACE MOUNTING APPARATUS

摘要

A plurality of reference marks 40a to 40f are attached to the fixed portion of the body 101 in a state corresponding to the mounting working position P. [ The expansion calculation unit 34 obtains the thermal expansion change amount of the ball screw shafts 8 and 14 that drive the head unit 5 using the coordinate positions of some of the reference marks 40a to 40c. The correction coefficient calculating section 322 calculates a correction coefficient K for correcting the target coordinate position corresponding to the mounting operation position P in accordance with the thermal expansion change amount. This makes it possible to calculate a correction coefficient with a necessary and sufficient accuracy while minimizing the influence on the production tact time.