Investigation the Influence of SPIF Parameters on Residual Stresses for Angular Surfaces Based on Iso-Planar Tool Path
Incremental Sheet Metal Forming (ISMF) is a modern sheet metal forming technology which offers the possibility of manufacturing 3D complex parts of thin sheet metals using the CNC milling machine. The surface quality is a very important aspect in any manufacturing process. Therefore, this study focuses on the resultant residual stresses by forming parameters, namely; (tool shape, step over, feed rate, and slope angle) using Taguchi method for the products formed by single point incremental forming process (SPIF). For evaluating the surface quality, practical experiments to produce pyramid like shape have been implemented on aluminum sheets (AA1050) for thickness (0.9) mm. Three types of tool shape used in this work, the spherical tool gave higher residual stresses than other types, also three levels for each of step over and feed rates utilized. It found that residual stresses was raised up with increasing the step over and feed rate values, the effect of these variables studied on two slope angles. By using analysis of variance method (ANOVA) found that the most influential parameter is step over with (59.18%) and (65.42%) for both slop angles; (α=45°) and (α=55°) respectively.
P. Lehtinen, T. Väisänen & M. Salmi "The effect of local heating by laser irradiation for aluminum, deep drawing steel and copper sheets in incremental sheet forming" Physics Procedia. Vol. 78, pp. 312-319,2015.
K. Jackson & J. Allwood "The mechanics of incremental sheet forming" Journal of Materials Processing Technology. Vol. 209, pp. 1158-1174,2009.
M. Azaouzi & N. Lebaal "Tool path optimization for single point incremental sheet forming using response surface method" Simulation Modeling Practice and Theory, pp. (49–58),2012.
M. Skjoedt, N. Bay, B. Endelt & G. Ingarao "Multi Stage Strategies for Single Point Incremental Forming of a Cup" International Journal of Material Forming. Suppl. 1, pp. 1199 –1202,2008.
Zemin Fu, Jianhua Mo, Fei Han & Pan Gong " Tool path correction algorithm for single-point incremental forming of sheet metal" International Journal of Advanced Manufacturing Technology. Vol. 64, pp. 1239–1248, 2013.
S. H. Wu1, Ana Reis, F.M. Andrade Pires, Abel D. Santos & A. Barata da Rocha " Study of tool trajectory in incremental forming" Advanced Materials Research. Vol. 472-475, pp. 1586-1591, 2012.
Radu Crina, Herghelegiu Eugen, Tampu Catalin and Cristea Ion "The Residual Stress State Generated by Single Point Incremental Forming of Aluminum Metal Sheets", Journal of Applied Mechanics and Materials Vol.371, pp.148-152, 2013.
Crina Radu, Catalin Tampu, Ion Cristea, and Bogdan Chirita "The Effect of Residual Stresses on the Accuracy of Parts Processed by SPIF", Journal of Materials and Manufacturing Processes, Vol. 28, pp. 572–576,2014.
G. Vigneshwaran, V.S.S. Kumar & S.P. Shanmuganatan "Optimization of Process Parameters in Single Point Incremental Forming of AA 6063‐O Alloy" International Journal of Current Engineering and Scientific Research. Vol. 2, pp. 8-14, 2015.
H. Vemanaboina, D.A. Kumar, B.D. Kumar, K.S. & L.S. Nayak "Residual Stress Measurement using X-Ray Diffraction for Weldments" IJSRD || National Conference on Recent Trends & Innovations in Mechanical Engineering, pp 176-179, 2016.
A. Zolanvari, S. H. Sagha, F. Eshaghi, Z. Shahedi & A. Zendehnam "Microstructure and Residual Stress Measurement of Ag/Glass Thin Films Using In-Situ High-Temperature X-ray Diffraction" Armenian Journal of Physics. Vol. 9, pp. 15-19, 2016.
Shukry H. Aghdeab and Laith A. Mohammed, “Studying Parameters of EDM Based Micro-Cutting Holes Using ANOVA”, Eng. &Tech. Journal, Vol.31, Part (A), No.15, 2013.
Wissam. K. Hamdan “Feasibility Development of Incremental Sheet Metal Forming Process Based on CNC Milling Machine”, PhD. thesis, University of Technology 2009.
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