The Technology of Flexible Blank Holder Forming and the Study of its Numerical Simulation

Abstract:

Abstract. In this paper, we have discussed the principle of the flexible blank holder forming ( FBHF) technology, and established the finite element model of medal deep drawing process based on FBHF. Then we have discussed the FBHF technology by analyzing the system of finite element model. By simulating the forming of rectangular box, we can conclude that FBHF technology will have a greater advantage when the depth of stamping forming is much deeper. We have also compared the thickness distribution parameters, wrinkling parameters, and spring back parameters of rigid blank holder forming parts with FBHF parts. The result shows that the forming parts of FBHF technology has uniform stress and strain distribution, small spring back, the quality of inhibiting wrinkling, crack and other defects.

• Periodical: Applied Mechanics and Materials (Volumes 490-491)
• Pages: 776-780
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.490-491.776
• Online since: January 2014
• Authors: Lian Cheng Li*, Ming Zhe Li, Xiao Wei Wang
• Keywords: Flexible Blank Holder, Metal Deep Drawing, Numerical Simulation, Sheet Metal Forming

References

[1] Bai Qian, Yang He, Zhan Mei. Finite element modeling of power spinnin of thin-walled hoopinner rib[J]. Transactions of Nonferrous Metals Society of China. 2008, 18: 6～13.

DOI: 10.1016/s1003-6326(08)60002-3

[2] Jun Zeng, Zhaoheng Liu, Henri Champliaud. FEM dynamic simulation and analysis of the roll-bending process for forming a conical tube[J]. Journal of materials processing technology, 2008, 98: 330~343.

DOI: 10.1016/j.jmatprotec.2007.07.016

[3] Siegert K. CNC－hydraulic multipoint blank-holder system for sheet metal forming presses[J]. Ann CIRP(1993), 42(1): 319～322.

DOI: 10.1016/s0007-8506(07)62452-4

[4] Leonid Shulkin，Steven W. Jansen，Mustafa A. Ahmetoglu，Gray L. Kinzel，Taylan Altan. Elastic deflections of the blank holder in deep drawing of heet metal[J]. Journal of Materials Processing Technology. 1996，59：34～40.

DOI: 10.1016/0924-0136(96)02284-4

[5] Z.R. Qian, M.Z. Li, F.X. Tan. The analyse on the process of multi-point forming for dish head[J]. Journal of Materials Processing Technology，2007，471-475.

DOI: 10.1016/j.jmatprotec.2006.11.132

[6] Q. Zhang, Z.R. Wang, T.A. Dean. Multi-point sandwich forming of a sphe-rical sector with tool-shape compensation[J]. Journal of Materials Processing Technology, 2007，194(1-3): 74-80.

DOI: 10.1016/j.jmatprotec.2007.04.002

[7] Mustafa Yaşar, Zeki Korkmaz, Muammer Gavas. Forming sheet metals by means of multi-point deep drawing method[J]. Materials & Design, 2007， 28(10): 2647-2653.

DOI: 10.1016/j.matdes.2006.10.017

[8] Zhong-Yi Cai, Ming-Zhe Li. Finite element simulation of multi-point sheet forming process based on implicit scheme[J]. Journal of Materials Processing Technology, 2005, 161(3): 449-455.

DOI: 10.1016/j.jmatprotec.2004.07.082