Abstract
Ti/CFRP stacks are widely used in the aviation field. However, the life of existing Ti/CFRP drilling tool is extremely low. This paper analyzes the wear process of chisel edge and cutting edge of the carbide step drill to reveal the wear mechanism. Based on the microscopic observations and the variation of cutting edge rounding, it is found that tool wear is affected by the carbon fiber/Ti-adhesion interaction. This interaction makes the rake face more susceptible to occur adhesive wear, and slows down the flank wear. It also reveals the secondary sharpening effect of the rake wear and flank wear on cutting edge. In addition, the relationship between thrust force and tool wear is investigated. Results indicate that the variation of thrust force is related to the flank wear width and the degree of Ti-adhesion attached to chisel edge, but not to the cutting edge rounding.
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Acknowledgments
This work is supported by National Natural Science Foundation of China, No.51575082, National Natural Science Foundation of China-United with Liaoning Province, No. U1508207, National Key Basic Research Program of China (973 Program), No. 2014CB046503, National Innovative Research Group, No. 51621064.
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Wang, Q., Wang, F., Zhang, C., Chen, C., Wang, D. (2018). Experimental Study on Tool Wear of Step Drill During Drilling Ti/CFRP Stacks. In: Wang, S., Price, M., Lim, M., Jin, Y., Luo, Y., Chen, R. (eds) Recent Advances in Intelligent Manufacturing . ICSEE IMIOT 2018 2018. Communications in Computer and Information Science, vol 923. Springer, Singapore. https://doi.org/10.1007/978-981-13-2396-6_41
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DOI: https://doi.org/10.1007/978-981-13-2396-6_41
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