Commenced in January 2007
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The Effect of Tool Path Strategy on Surface and Dimension in High Speed Milling
Abstract:Many orthopedic implants like proximal humerus cases require lower surface roughness and almost immediate/short lead time surgery. Thus, rapid response from the manufacturer is very crucial. Tool path strategy of milling process has a direct influence on the surface roughness and lead time of medical implant. High-speed milling as promised process would improve the machined surface quality, but conventional or super-abrasive grinding still required which imposes some drawbacks such as additional costs and time. Currently, many CAD/CAM software offers some different tool path strategies to milling free form surfaces. Nevertheless, the users must identify how to choose the strategies according to cutting tool geometry, geometry complexity, and their effects on the machined surface. This study investigates the effect of different tool path strategies for milling a proximal humerus head during finishing operation on stainless steel 316L. Experiments have been performed using MAHO MH700 S vertical milling machine and four machining strategies, namely, spiral outward, spiral inward, and radial as well as zig-zag. In all cases, the obtained surfaces were analyzed in terms of roughness and dimension accuracy compared with those obtained by simulation. The findings provide evidence that surface roughness, dimensional accuracy, and machining time have been affected by the considered tool path strategy.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1132080Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 562
 J. J.Ramsden, D. M. Allen, D. J. Stephenson, J. R. Alcock, G. N. Peggs, G. Fuller, and G. Goch, “The design and manufacture of biomedical surfaces,” CIRP ANNA-MANUFAC. TECH., vol. 39, pp. 687-711, 2007.
 A. G. Mamalis, J. J. Ramsden, A. I. Grabchenko, L. A. Lytvynov, V. A. Filipenko and S. N. Lavrynenko, “A novel concept for the manufacture of individual sapphire-metallic hip joint endoprostheses”, J Biol. Phys. Chem., vol. 6, pp. 113-117, 2006.
 X. Q. Jiang and L. Blunt, “Morphological assessment of in vivo wear of orthopaedic implants using multiscalar wavelets”, Wear, Vol. 250, pp.217-221, 2001.
 J. H. Dumbleton, “Tribology of natural and artificial joints”, Elsevier, vol. 3, 1981.
 R. Baptista and J. A. Simoes, “Three and five axes milling of sculptured surfaces”, J Mater Process Tech., vol. 103, pp.398-403, 2000.
 A. M. Abuelnaga and M. A. El-Dardiry, “Optimization methods for metal cutting”, Int. J. Mach. Tool Des. Res., vol. 24, pp.11-18, 1984.
 B. White and A. Houshyar, “Quality and optimum parameter selection in metal cutting”, Comput. Ind, vol. 20, pp.87-98. 1992.
 A. F. Souza and R. T. Coelho, “Experimental investigation of feed rate limitations on high speed milling aimed at industrial applications”, Int. J. Adv. Manuf. Tech., vol. 32, pp.1104-1114. 2007.
 A. M. Ramos, C. Relvas, and J. A. Simoes, “The influence of finishing milling strategies on texture, roughness and dimensional deviations on the machining of complex surfaces”, J. Mater. Process. Tech., vol. 136, pp.209-216. 2003.
 M. Monreal, and C. A. Rodriguez, “Influence of tool path strategy on the cycle time of high-speed milling”, Comput. Aided Design, vol. 35, pp.395-401. 2003.
 B. V. Suresh and N. Raviswaran, “Tool path generation algorithm and 3D tolerance analysis for free-form surfaces”, J. Sci. Tech., vol. 4, pp.23-30. 2006.
 D. Misra, V. Sundararajan, and P. K. Wright, “Zig-zag tool path generation for sculptured surface”, Geometric and Algorithmic Aspects of Computer-Aided Design and Manufacturing, p.265. 2005.
 A. Souza, A. Diniz, A. Rodrigues, and R. Coelho, “Investigating the cutting phenomena in free-form milling using a ball-end cutting tool for die and mold manufacturing”, J. Adv. Manuf. Tech., 2014.
 R. Coelho, A. de Souza, A. Roger, A. Rigatti, and A. de Lima Ribeiro, “Mechanistic approach to predict real machining time for milling free-form geometries applying high feed rate”, J Adv Manuf Tech., vol. 46, pp. 1103-1111. 2010.