Study on the Surface Quality of Fender NC Incremental Forming

Abstract:

The NC incremental sheet metal forming technology is a flexible forming technology without dedicated forming dies. The forming locus of the forming tool can be adjusted by correcting the numerical model of the product. Because the deformation of sheet metal only occurs around the tool head and the deformed region is subjected to stretch deformation, the deformed region of sheet metal thins, and surface area increases. Sheet metal forming stepwise is to lead to the whole sheet metal deformation. The principle of NC incremental sheet metal forming and the forming process of the fender are introduced. The effect of process parameters on forming is analysed. The improvement method of the forming quality is suggested. The groove is created in the starting point of tool moving when the starting point of tool moving locus at all layers is identical. The groove can be eliminated when the starting point of tool moving locus at all layers is different. The feed pitch p increase, the process time decrease, production rate and surface degree of roughness increase. In general, the feed pitch is 0.25mm.

• Periodical: Advanced Materials Research (Volumes 335-336)
• Pages: 523-526
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.335-336.523
• Online since: September 2011
• Authors: Liu Ru Zhou
• Keywords: Incremental Forming, Process Parameter, Sheet Metal Forming

References

[1] Matsubara, S. A. computer numerically controlled dieless incremental forming of a sheet metal [J]. Proceedings of the Institution of Mechanical Engineers B , Journal of Engineering Manufacture , 2001, (215): 959-966

DOI: 10.1243/0954405011518863

[2] Iseki, H. Approximate deformation analysis and FEM analysis for the incremental bulging of sheet metal using a spherical roller [J]. Journal of Materials Processing Technology, 2001, 1-3(111): 150-154

DOI: 10.1016/s0924-0136(01)00500-3

[3] Park, J.J；Kim, Y.H. Fundamental studies on the incremental sheet metal forming technique[J]. Journal of Materials Processing Technology, 2003, (140): 447-453

DOI: 10.1016/s0924-0136(03)00768-4

[4] Ambrogio G, De Napoli. Application of Incremental Forming process for high customised medical product manufacturing [J]. Journal of Materials Processing Technology, 2005. 162,156-162

DOI: 10.1016/j.jmatprotec.2005.02.148

[5] CUI Zhen, GAO Lin, LU Qi-jian. Application of CNC Incremental Forming in Hole-flanging Process. Materials for Mechanical Engineering,2008,(7):5-8 (in chinese)

[6] G. Hussain, N.U. Dar, L. Gao, M.H. Chen.A comparative study on the forming limits of an aluminum sheet-metal in negative incremental forming. Journal of Materials Processing Technology, 187–188 (2007) 94-98

DOI: 10.1016/j.jmatprotec.2006.11.112

[7] J.R. Duflou, B. Callebaut, J. Verbert, H. De Baerdemaeker. Improved SPIF performance through dynamic local heating, International Journal of Machine Tools & Manufacture ,48 (2008) 543–549

DOI: 10.1016/j.ijmachtools.2007.08.010

[8] ZHOU Liu-ru, MO Jian-hua,XIAO Xiang-zhi. A study of NC incremental sheet parts forming process. JOURNAL OF PLASTICITY ENGINEERING , 2003,(4):27-29 (in chinese)

[9] ZHOULiu-ru, XIAO Xiang-zhi, MO Jian-hua. A Study of NC Incremental Vertical Wall Cylinder Forming Process, MECHANICAL SCIENCE AND TECHNOLOGY, 2004, (11): 1366-1369 (in chinese)

[10] Ghulam Hussain, Gao Lin and Nasir Hayat.Improving profile accuracy in SPIF process through statistical optimization of forming parameters. Journal of Mechanical Science and Technology 25 (1) (2011) 177-182

DOI: 10.1007/s12206-010-1018-8

[11] M. Bambach, B. Taleb Araghi, G. Hirt. Strategies to improve the geometric accuracy in asymmetric single point incremental forming. Prod. Eng. Res. Devel. (2009) 3:145–156

DOI: 10.1007/s11740-009-0150-8