A comparative study of hole making performance by coated and uncoated WC/Co cutters in helical milling of Ti/CFRP stacks

Shipeng Li, Xuda Qin, Yan Jin, Dan Sun, Yonghang Li

Research output: Contribution to journalArticle

13 Citations (Scopus)
348 Downloads (Pure)

Abstract

Carbon fiber reinforced plastic (CFRP) and titanium alloy stacks are typical difficult-to-machine materials and often results in rapid tool wear, leading to a low drilling efficiency in aircraft assembling. Helical milling process has demonstrated its superior performance in making holes in these materials, but selecting a proper cutting tool is still a great challenge and little research has been carried out to investigate the effect of different coatings on tools performance. Therefore, in this paper, milling tools with and without coatings (diamond coating, TiAlN+AlCrN multilayer coating and TiAlN coating) were employed in helical milling of Ti/CFRP stacks. The cutting performance and the degradation mechanisms of these milling tools were investigated in details. It is found that, uncoated tools demonstrate the best cutting performance with lowest cutting force, highest hole quality and slightest tool wear. Degradation of nitride coated tools is due to the combined effects of increased roundness of cutting edge and the strong dependence of cutting performance on the tool sharpness. Diamond coated tools showed the greatest degradation, which has been attributed to the low materials ductility at tool cutting edge, weak adhesive strength between the coating and substrate, and the poor thermal resistance of the diamond coating.
Original languageEnglish
Pages (from-to)2645-2658
Number of pages14
JournalInternational Journal of Advanced Manufacturing Technology
Volume94
Issue number5-8
Early online date16 Sep 2017
DOIs
Publication statusPublished - Feb 2018

Fingerprint Dive into the research topics of 'A comparative study of hole making performance by coated and uncoated WC/Co cutters in helical milling of Ti/CFRP stacks'. Together they form a unique fingerprint.

  • Cite this