3D On Machine Metrology for Conformal Printing of Conductors and Dielectrics onto Complex 3D Surfaces

摘要

This report evaluates some of the challenges faced with 2D camera based on-machine metrology and potentialoptions with using 3D sensors for such Direct Write applications. Specifically, in order to fully exploit 3D directwrite technology to surfaces in excess of 45 degree to the print direction, non-planar motion employing 4th and 5throtary axes are often necessary. This report will outline a procedure for doing high accuracy rotary axis calibration.Furthermore, the use of online metrology solution to enable tuning of the rotary axis as well as for online printcharacterization will be detailed. These efforts will provide a fresh impetus to the use of 3D sensors for on-machinemonitoring applications in additive manufacturing.