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http://dx.doi.org/10.14775/ksmpe.2022.21.06.081

A Study on Vibration Characteristics and Machining Quality in Thin-wall Milling Process of Titanium Alloy  

Kim, Jong-Min (Graduate School, Gyeongsang National Univ., and KJF)
Koo, Joon-Young (Bethel Machine Tool)
Jun, Cha-Soo (Department of Industrial and Systems Engineering & Engineering Research Institute, Gyeongsang National University)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.21, no.6, 2022 , pp. 81-88 More about this Journal
Abstract
Titanium alloy (Ti-6Al-4V) has excellent mechanical properties and high specific strength; therefore, it is widely used in aerospace, automobile, defense, engine parts, and bio fields. Particularly in the aerospace field, as it has a low specific gravity and rigidity, it is used for the purpose of increasing energy efficiency through weight reduction of parts, and most have a thin-walled structure. However, it is extremely difficult to machine thin-walled shapes owing to vibration and deformation. In the case of thin-walled structures, the cutting forces and vibrations rapidly increase depending on the cutting conditions, significantly affecting the surface integrity and tool life. In this study, machining experiments on thin-wall milling of a titanium alloy (Ti-6Al-4V) were conducted for each experimental condition with different axial depths of cut, radial depth of cut, and machining sequence. The machining characteristics were analyzed, and an effective machining method was derived by a comprehensive analysis of the machined surface conditions and cutting signals.
Keywords
Ti-alloy; Milling Process; Thin-walled Structure; Cutting Signal; Machined Surface; FFT Analysis;
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  • Reference
1 Rack, H. J. and Qazi, J. I., "Titanium alloys for biomedical applications," Materials Science and Engineering:C Vol. 26, Issue. 8 pp. 1269-1277, 2006.   DOI
2 Lee, Y. T., Titanium(in Korean), Iron and Steel News, 2016.
3 Ginting, A. and Nouari, M., "Surface integrity of dry machined titanium aiioys," International Jorunal of Machine Toola and Manufacture, Vol. 49, Issures 3-4, pp. 325-332, 2009.   DOI
4 Hong, D. K., Kim, D. Y. and Ahn, C. W., "The Study on the Optimal Working Condition for Vibration, Surface Roughness and Cutting Temperature in End-milling," Transaction of KSNVE, Vol. 14, No. 12, pp.1322-1329, 2004.   DOI
5 Ramanaiah, B. V., Manikanta, B., Ravi Sankar, M., Malhotra, M. and Gajrani, K. K., "Experimental Study of Deflection and Surface Roughness in Thin Wall Machining of Aluminum Alloy," Materials Today: Proceedings 5, pp. 3745-3754, 2018.   DOI
6 Izamshah, R. A., Mo, JPT. and Songlin, D., "Hybrid deflection prediction on machining thin-wall monolithic aerospace component," Journal of Engineering Manufacture, Vol. 226, Iss. 4, 592-605, 2012.   DOI
7 Dang, X. B., Wan, M., Zhang, W. H. and Yang, Y., "Chatter analysis and mitigation of milling of the pocket-shaped thin-walled workpieces with viscous fluid," International Journal of Mechanical Sciences Vol. 194, 2021.
8 Kim, J. M., Koo, J. Y., Kim, J. S. and Jun, C. S., "Optimization of Machining Conditions in Milling of Titanium Alloy(Ti-6A1-4V)," Korean Society of Manufacturing Process Engineers, Vol. 18, No. 10, pp. 60-67, 2019.
9 Shin, Y. B. and Kim, S. J., "An Experiment of Machineable Width and Thickness of Airframe Thin Plate Structure," Journal of The Korean Society of Manufacturing Technology Engineers, Vol. 22, No. 1 pp. 162-167, 2013.