The present invention features a method whereby each vacuum nozzle in a
multi-spindle component placement machine is inspected placement cycle.
This process also allows for updating calibration of the nozzle position
as well as immediate feedback regarding the condition of the vacuum
nozzle. A chipped orifice or otherwise damaged nozzle is detected using a
vision system and comparing the currently acquired image of each nozzle
with the image of an "ideal" nozzle. Likewise, contamination such as
adhesive on the nozzle is detected before that contamination can affect
placement accuracy. Because of the nozzle inspection during the placement
cycle, there is no slowdown of the placement machine cycle rate.