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Experimental Study of Micro-holes Position Accuracy on Drilling Flexible Printed Circuit Board

Zheng, L. J.; Zhang, X.; Wang, C. Y.; Wang, L. F.; Li, S.; Song, Y. X.; Zhang, L. Q.

Inst. Werkzeugmaschinen und Fabrikbetrieb

Drilling through holes is an important procedure in the manufacturing process of flexible printed circuit board (FPCB). The main influencing factor of micro holes quality is holes position accuracy. Holes position accuracy directly influences the FPCB electrical performance, reliability and the realization of the installation requirements. Therefore, it is very necessary to analysis the influencing factors of holes position accuracy. In this paper, single factor experiment method is used to study the relation of holes position accuracy and those influencing factors, obtaining the influence law of each factor on the holes location accuracy. The accuracy will get better with the increasing of spindle speed, retraction speed and drill diameter ,however the accuracy will get worse with the increasing of thickness of entry board and number of FCCL stack. Choosing appropriate entry board use-pattern will greatly improve the holes position accuracy.
  • Part of: Seliger, Günther (Ed.): Innovative solutions : proceedings / 11th Global Conference on Sustainable Manufacturing, Berlin, Germany, 23rd - 25th September, 2013. - Berlin: Universitätsverlag der TU Berlin, 2013. - ISBN 978-3-7983-2609-5 (online). - http://nbn-resolving.de/urn:nbn:de:kobv:83-opus4-40276. - pp. 268-272.