Experimental Study on Cutting Force of High-Speed Micro-Drilling Flexible Printed Circuit Board

Abstract:

Cutting force is one of the most important parameters in the drilling process of FPC (Flexible printed circuit board). It has a directly affect on the micro-drills’ life and the micro-holes quality. It causes the FPC delamination, pulling of the plastic, the burr of exit hole and other processing defects. In this paper, some experimental investigations of cutting force of high speed micro-drilling are carried out to improve the drilling quality of FPC. The results indicate that the drilling parameters(spindle speed, feed speed and drill-bit diameter) have significant influence on micro-drilling thrust force. The thrust force of drill copper foil is larger than the thrust force of drill adhesiver layer and the thrust force of drill PI layer is the smallest. The larger the thrust force is, the bigger the exit burr is.

• Periodical: Materials Science Forum (Volume 723)
• Pages: 401-406
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.723.401
• Online since: June 2012
• Authors: Xin Zhang, Cheng Yong Wang, Li Juan Zheng, Lin Fang Wang, Yue Xian Song
• Keywords: Flexible Printed Circuit Board, High Speed Drilling, Micro-Holes, Thrust Force

References

[1] L. Zheng, C. Wang, Y. Song, et al.: Adv Mater Res. 188 (2011) 441-449.

[2] H. Nakagawa, K. Ogawa, A.Kihara, et al.: J Mater Process Technol. 191 (2007) 293-296.

[3] L Zheng, C Wang, L Yang, et al.: Int J Mach Tools Manuf. 52(1) (2012) 40-49.

[4] Y. Xu, J. Mao, Y. Chen, et al.: Printed Circuit Information. 10 (2010) 28-30.

[5] E. Aoyama, H. Nobe, T. Hirogaki: J Mater Process Technol. 118 (2001) 436-441.

[6] L.P. Yang, L.X. Huang, C.Y. Wang, et al.: Adv Mater Res. 188 (2011) 429-434.

[7] B.K. Hinds, M. Reanor: Proceedings of the Institution of Mechanical Engineers. Part B-Engineering Manufacture. 214(1) (2000) 35-45.