Effects of Cutter Geometrical Features on Machining Polyetheretherketones (PEEK) Engineering Plastic
DOI:
https://doi.org/10.15282/jmes.6.2014.12.0082Keywords:
Machining; polyetheretherketones; end mill angles; surface roughness.Abstract
When polyetheretherketone is used in structural applications it generally undergoes additional machining operations in order to form components. Machining PEEK can be a challenging task for manufacturers, however, especially when using a conventional cutting tool. This paper deals with the influence of a cutter’s geometrical features when machining polyetheretherketones engineering plastic on their machining performances. Three categories of end mills were designed and fabricated with varying rake angles, clearance angles and helix angles to investigate effects on machining surface roughness and burr formation. From the investigations conducted, it is evident that end mill geometrical features (rake angle, clearance angle and helix angle) have significant effects on machining surface roughness and burr formation. Increasing the rake angle and helix angle value will improved the machining surface roughness, however, in the case of varying clearance angles, there are no significant results for the surface roughness produced. It could be observed, however, that a 12° clearance angle produced better surface roughness compared to other angles. The findings from the deliberately conducted experiments can be used for the development of high performance cutting tools, especially for machining polyetheretherketones engineering plastic material.
References
Baldoukas, Α., Soukatzidis, F., & Demosthenous, G. (2008). Experimental investigation of the effect of cutting depth, tool rake angle and workpiece material type on the main cutting force during a turning process. Paper presented at the Proceedings of the 3rd International Conference on Manufacturing Engineering (ICMEN), Greece.
Chatelain, J., & Zaghbani, I. (2012). Effect of tool geometry special features on cutting forces of multilayered cfrp laminates. Journal of Composite Materials, 85-90.
Davim, P., & Mata, F. (2006). Chemical vapour deposition (cvd) diamond coated tools performance in machining oDenault, J., & Dumouchel, M. (1998). Consolidation process of peek/carbon composite for aerospace applications. Advanced Performance Materials, 5(1-2), 83-96.
Fried, J. (2003). Polymer science and technology (2nd ed.). USA: Prentice Hall.
Izamshah, R., Yuhazri, M. Y., Hadzley, M., Ali, M. A., & Subramonian, S. (2013). Effects of end mill helix angle on accuracy for machining thin-rib aerospace component. Applied Mechanics and Materials, 315, 773-777.
Kurtz, S. M., & Devine, J. N. (2007). Peek biomaterials in trauma, orthopedic, and spinal implants. Biomaterials, 28(32), 4845-4869.
Mata, F., Gaitonde, V., Karnik, S., & Davim, J. P. (2009). Influence of cutting conditions on machinability aspects of peek, peek cf 30 and peek gf 30 composites using pcd tools. Journal of Materials Processing Technology, 209(4), 1980-1987.
Moetakef Imani, B. (2009). Effects of helix angle variations on stability of low immersion milling. IUST International Journal of Engineering Science, 19(5), 112-115.
Sheikh-Ahmad, J. Y. (2009). Machining of polymer composites. New York: Springer.
Shirpurkar, P., Bobde, S., Patil, V., & Kale, B. (2012). Optimization of turning process parameters by using tool inserts-a review. International Journal of Engineering and Innovative Technology, 2(6), 1-13.
Tunç, L. T., & Budak, E. (2012). Effect of cutting conditions and tool geometry on process damping in machining. International Journal of Machine Tools and Manufacture, 57, 10-19.
Xilloc. (2013). Patient specific implants. from http://www.xilloc.com/ products_services/.
Yang, S., Chang, S., Lee, Y., Kim, H., & Ko, T. (2003). Analysis of shear and friction behaviors in end milling process. Cailiao Kexue Yu Jishu (Journal of Materials Science & Technology) (China), 19, 237-238.f peek composites. . Materials & Design, 29 (8), 1568-1574.
