ABSTRACT

Consider a simple case using a two-dimensional printed circuit board. The number of alignment points dežned in the tool path determines the accuracy level to which a panel can be aligned. The global alignment features should be placed as far apart as possible for the best results (Figure 6.1) and in all cases should be outside the laser processing area. If individual components on a panel require very high accuracy, sometimes it is best to use žducials more local to the components to increase accuracy; however, this also increases cycle time as there are more alignments per panel. One of four levels of alignment is used:

One-point alignment corrects an X-Y offset between an alignment point on the panel and the reference point in the žle.