Cutting Tools in Finishing Operations for CNC Rapid Manufacturing Processes: Experimental Studies

Authors: M. N. Osman Zahid, K. Case, D. Watts

Abstract:

This paper reports an advanced approach in the application of CNC machining for rapid manufacturing processes (CNC-RM). The aim of this study is to improve the quality of machined parts by introducing different cutting tools during finishing operations. As the cutting is performed in different directions, the surfaces presented on part can be classified into several categories. Therefore, suitable cutting tools are assigned to machine particular surfaces and to improve the quality. Experimental studies have been carried out by fabricating several parts based on the suggested approach. The results provide further support for implementing this approach in rapid machining processes.

Keywords: CNC machining, End mill tool, Finishing operation, Rapid manufacturing.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1093165

References:

[1] Akula, S. & Karunakaran, K. 2006, "Hybrid adaptive layer manufacturing: An Intelligent art of direct metal rapid tooling process", Robotics and Computer-Integrated Manufacturing, vol. 22, no. 2, pp. 113-123.
[2] Chen, J., Huang, Y. & Chen, M. 2005, "A study of the surface scallop generating mechanism in the ball-end milling process", International Journal of Machine Tools and Manufacture, vol. 45, no. 9, pp. 1077-1084.
[3] Chen, T. & Shi, Z. 2008, "A tool path generation strategy for three-axis ball-end milling of free-form surfaces", Journal of Materials Processing Technology, vol. 208, no. 1, pp. 259-263.
[4] Davim, J.P. 2001, "A note on the determination of optimal cutting conditions for surface finish obtained in turning using design of experiments", Journal of Materials Processing Technology, vol. 116, no. 2, pp. 305-308.
[5] Degarmo, E.P., Black, J.T. and Kohser, R.A., 2003. Materials and Processes in Manufacturing. 9 edn. John Wiley & Sons.
[6] Elber, G. 1995, "Freeform surface region optimization for 3-axis and 5-axis milling", Computer-Aided Design, vol. 27, no. 6, pp. 465-470.
[7] Elbestawi, M., Chen, L., Becze, C. & El-Wardany, T. 1997, "High-speed milling of dies and molds in their hardened state", CIRP Annals-Manufacturing Technology, vol. 46, no. 1, pp. 57-62.
[8] Frank, M., Joshi, S.B. & Wysk, R.A. 2002, "CNC-RP: a technique for using CNC machining as a rapid prototyping tool in product/process development", Proceedings of the 11th annual industrial engineering research conference, Orlando, Florida. MayCiteseer, , pp. 19.
[9] Frank, M.C., Wysk, R.A. & Joshi, S.B. 2004, "Rapid planning for CNC milling--A new approach for rapid prototyping", Journal of Manufacturing Systems, vol. 23, no. 3, pp. 242-255.
[10] Li, Y. & Frank, M.C. 2006, "Machinability analysis for 3-axis flat end milling", Journal of manufacturing science and engineering, vol. 128, no. 2, pp. 454-464.
[11] Osman Zahid, M.N., Case, K. & Watts, D. 2013, "Optimization of Roughing Operations in CNC Machining for Rapid Manufacturing Processes", Proceedings of the 11th International Conference on Manufacturing Research, Cranfield University Press, 19 September 2013, pp. 233.
[12] Renner, A. 2008, "Computer aided process planning for rapid prototyping using a genetic algorithm",MSc. Iowa State University.
[13] Ryu, S.H., Choi, D.K. & Chu, C.N. 2006, "Roughness and texture generation on end milled surfaces", International Journal of Machine Tools and Manufacture, vol. 46, no. 3, pp. 404-412.
[14] Vijayaraghavan, A., Hoover, A., Hartnett, J. & Dornfeld, D. 2008, "Improvingendmillingsurfacefinishbyworkpiecerotationandadaptive toolpathspacing", Laboratory for Manufacturing and Sustainability.