Effect of the Blank-Holding Load on the Drawing Force in the Deep-Drawing Process of Cylindrical and Square Cups

Abstract:

In this study, the influence of the blank-holding force (BHF) on the drawing force (DF) in the deep-drawing process of cylindrical and square cups has been investigated experimentally. For this purpose, different constant and variable BHFs have been applied to AA6016-T4 aluminum alloy and DC04 steel sheets during the forming process. It has been observed that an increased constant BHF leads to an increase of DF. On the other hand, the variable BHF approach, in which the BHF decreases in six steps throughout the punch stroke, reduces the DF.

• Periodical: Applied Mechanics and Materials (Volume 760)
• Pages: 379-384
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.760.379
• Online since: May 2015
• Authors: Lucian Lazarescu, Ioan Nicodim, Dan Sorin Comsa, Dorel Banabic
• Keywords: Deep-Drawing, Punch Force, Sheet Metals, Variable Blank-Holding Load

References

[1] I. Nicodim, Increase of deep-drawing process efficiency by using control systems of blank-holding force. PhD Thesis (Technical University of Cluj-Napoca, Romania 2013) (in Romanian).

[2] K. Siegert, S. Wagner, A. Galaiko, Close loop control system for the blank holder forces in deep drawing, Annals of the CIRP. 44 (1995) 251-254.

DOI: 10.1016/s0007-8506(07)62319-1

[3] K. Siegert, Research and development in sheet metal forming at the Institute for metal forming technologie of the University of Stuttgart (University of Stuttgart, Germany 2004).

[4] D. Banabic, I. Tapalaga, Review of the criteria for determination of the blank-holding forces in deep-drawing processes, J. of Plastic Deformation. 1 (1994) 42-47.

[5] Z. Wei, Z. Zhang, X. Dong, Deep drawing of rectangle parts using variable blank holder force. Int. J. Adv. Manuf. Technol. 29 (2006) 885–889.

DOI: 10.1007/s00170-005-2578-0

[6] T. Yagami, K. Manabe, M. Yang, H. Koyama, Intelligent sheet stamping process using segment blank holder modules. J. of Materials Proc. Techn. 155-156 (2004) 2099–2105.

DOI: 10.1016/j.jmatprotec.2004.04.144

[7] S. Kitayama, S. Hamano, K. Yamazaki, T. Kubo , H. Nishikawa, H. Kinoshita, A closed-loop type algorithm for determination of variable blank holder force trajectory and its application to square cup deep drawing, Int. J. Adv. Manuf. Technol. 51 (2010).

DOI: 10.1007/s00170-010-2656-9

[8] S. Tommerup, B. Endelt, Experimental verification of a deep drawing tool system for adaptive blank holder pressure distribution, J. of Materials Proc. Techn. 212 (2012) 2529– 2540.

DOI: 10.1016/j.jmatprotec.2012.06.015

[9] B. Endelt, S. Tommerup, J. Danckert, A novel feedback control system - Controlling the material flow in deep drawing using distributed blank-holder force, J. of Materials Proc. Techn. 213 (2013) 36–50.

DOI: 10.1016/j.jmatprotec.2012.08.003

[10] G. Iwamatsu, Y. Okude, S. Yoshihara, T. Ishii, Formability of TP 340 pure titanium sheet in deep drawing superimposed ultrasonic vibration, in: P. Hora (Ed. ), Proc. of IDDRG 2013 Conference, Zurich, Switzerland. (2013) 467-472.

[11] L. Lazarescu, D.S. Comsa, I. Nicodim, I. Ciobanu, D. Banabic, Characterization of plastic behaviour of sheet metals by using the hydraulic bulge test, Trans. Nonferrous Met. Soc. China. 22 (2012) 275-279.

DOI: 10.1016/s1003-6326(12)61719-1