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Development of a Drill Bit for CFRP/Aluminum-Alloy Stack: To Improve Flexibility, Economical Efficiency and Work Environment
Technical Paper
2013-01-2227
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In the expansion of composite material application, it is one of the most important subjects in assembly of aircraft structure how drilling of composite/metal stack should be processed in an efficient way. This paper will show the result of development of a drill bit for CFRP/Aluminum-alloy stack by Kawasaki Heavy Industries (KHI) and Sumitomo Electric Hardmetal (SEH).
In order to improve workability and economic performance, the drill bit which enables drilling CFRP/Al-alloy stack: at 1 shot; from both directions; without air blow and coolant (just usual vacuuming); was required. A best mix drill bit which has smooth multi angles edge and pointed finishing edge was produced as a result of some trials.
Developed drill bit achieved required performance and contributed to large cost reduction, labor hour saving, production speed increase and work environment improvement.
Authors
Citation
Segawa, S., Tamura, J., Suzuki, S., Oka, H. et al., "Development of a Drill Bit for CFRP/Aluminum-Alloy Stack: To Improve Flexibility, Economical Efficiency and Work Environment," SAE Technical Paper 2013-01-2227, 2013, https://doi.org/10.4271/2013-01-2227.Also In
References
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