| 摘要 |
PROBLEM TO BE SOLVED: To provide a perforating method, diminishing variation in machining accuracy even in the case of a multi-axis printed board perforating machine, and improving the machining accuracy on the whole as the multi-axis printed board perforating machine. SOLUTION: Shift amounts in the X-direction and in the Y-direction of a shaft center of a drill 15 to the axis in design are obtained at every rotating speed of each spindle 10 for holding and rotating the drill 15. In the case of making holes having two or more kinds of diameters in the printed board 2, concerning at least one diameter (e.g. an exposure reference hole), perforation by each spindle 10 is performed, and the other holes are made substantially at the same time by all spindles 10. COPYRIGHT: (C)2007,JPO&INPIT |
