Abstract
With the evolution of machine tools and the emergence of new cutting tools; and in the framework of the production of parts with complex geometry, the manufacturers were able to realize more and more parts of complex shape. The multi-axis machining is the main technique for achieving the free form; in fact the multi-axis milling with ball end tools attracts the interest of the aerospace industry and the mussel industry which continues to seek ways to improve the surface quality of finished parts (the shaping of parts in a jet engine, it achieves a material removal process, such as multi-axis milling). The titanium alloy is widely used in aerospace industry is the subject of this study in fact, the integrity of the surfaces of parts produced by multi-axis milling is an issue more relevant than ever for the aerospace industry. This paper aims to study the influence of the position of the tool and the parameters cutting precisely the speed feed Vf, the engagement of the tool on the roughness 3D, micro-hardness and microstructure alteration created in sub-surface during the milling of concave surface of the titanium alloy type Ti-6Al-4V. It gives also more details on the different parameters (cutting conditions) such as cutting forces and also temperature field in cutting, the state of surface and the state of residual stresses. Observations on the scanning electron microscope (SEM) are carried out before and after machining of the specimens and the corresponding cutting tools for damage analysis at the surfaces.
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Acknowledgement
Authors of the present paper thank so much to American Stress Technologies Inc, Pittsburgh, USA for their kind help to use their facilities for residual stress measurements. Personally E. Bayraktar thanks to Dr T. Rickert for his valuable ideas and his personal attempt to carry out the measurements of residual stresses.
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Baccar, MH., Bayraktar, E., Rickert, T., Boujelbene, M., Katundi, D. (2013). Experimental Study of High Speed Ball End Milling of Titanium Alloy (Ti-6Al-4V). In: Ventura, C., Crone, W., Furlong, C. (eds) Experimental and Applied Mechanics, Volume 4. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-4226-4_23
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DOI: https://doi.org/10.1007/978-1-4614-4226-4_23
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