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Investigation Of A Hybrid Process: Multipoint Incremental Forming

Authors: Boudhaouia, Safa; Gahbiche, Mohamed Amen; Giraud, Eliane; Wacef Ben Salem; Santo, Philippe Dal;

Investigation Of A Hybrid Process: Multipoint Incremental Forming

Abstract

{"references": ["M. Z Li, Y. Liu, S. Su, G. Li, \"Multi-point forming: A flexible manufacturing method for a 3-d surface sheet\", Journal of Materials Processing Technology 87(1999) 277\u2013280.", "M. Z Li, Z. Yi Cai, C. G Liu, \"Flexible manufacturing of sheet metal parts based on digitized-die\", Robotics and Computer-Integrated Manufacturing 23 (2007) 107\u2013115.", "M. Z Li, Q. G Han, Z. Y Cai, CG Liu, S. Z Su, \"Multipoint forming\", Comprehensive materials processing(2014), vol. 3, no 6,pp. 107\u2013147.", "M.B. Silva, P.A.F. Martins, \"Incremental sheet forming\", Comprehensive materials processing (2014), vol. 3, no 2, pp. 7\u201326.", "F. Micari, G. Hirt, A. Bramley, J. Duflou, J. Allwood J. Jeswiet, \"Asymmetric Single Point Incremental Forming of Sheet Metal,\" CIRP Annals - Manufacturing Technology, vol. 54, no. 2, pp. 88-114, 2005.", "M.B. Silva, P.A.F. Martins, \"Two-Point Incremental Forming with Partial Die: Theory and Experimentation\", Journal of Materials Engineering and Performance (2013), Vol. 22, Issue 4, pp 1018-1027.", "S. Boudhaouia, M. A. Gahbiche, E. Giraud, Y. Ayed, W. Ben Salem, P. Dal Santo, \"Analysis and conversion of CAM generated tool paths for incremental sheet forming simulation\" unpublished.", "Z. Y Cai, S. H. Wan, X. D. Xu, M. Z. Li: Numerical simulation for the multi-point stretch forming process of sheet metal, journal of materials processing technology 2 0 9 (2009) 396\u2013407", "L Li, Y-H Seo, S-C Heo, B-S Kang, J. Kim \"Numerical simulations on reducing the unloading spring-back with multi-step multi-point forming technology\". The International Journal of Advanced Manufacturing Technology (2010), Volume 48, Issue 1,pp 45-61\n[10]\tQ. Zhang, T.A. Dean, Z.R. Wang, (2006a), Numerical simulation of deformation in multi-point sandwich forming, International Journal of Machine Tools & Manufacture 46 (2006) 699\u2013707."]}

Multi-point forming (MPF) and asymmetric incremental forming (ISF) are two flexible processes for sheet metal manufacturing. To take advantages of these two techniques, a hybrid process has been developed: The Multipoint Incremental Forming (MPIF). This process accumulates at once the advantages of each of these last mentioned forming techniques, which makes it a very interesting and particularly an efficient process for single, small, and medium series production. In this paper, an experimental and a numerical investigation of this technique are presented. To highlight the flexibility of this process and its capacity to manufacture standard and complex shapes, several pieces were produced by using MPIF. The forming experiments are performed on a 3-axis CNC machine. Moreover, a numerical model of the MPIF process has been implemented in ABAQUS and the analysis showed a good agreement with experimental results in terms of deformed shape. Furthermore, the use of an elastomeric interpolator allows avoiding classical local defaults like dimples, which are generally caused by the asymmetric contact and also improves the distribution of residual strain. Future works will apply this approach to other alloys used in aeronautic or automotive applications.

Keywords

numerical simulation, Incremental forming, multipoint forming., MPIF

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