Analysis of Trimming Processes for Advanced High Strength Steels 2008-01-1446
Current die design recommendations attempt to limit the production of burrs through accurate alignment of the upper and lower edges. For common automotive exterior sheet, this translates to a gap less than 0.06mm. Unfortunately, the tolerances required by such standards often exceed the capabilities of many trim dies. The objective of the research described in this paper is to study the mechanisms of burrs generation and their impact on AHSS formability in stretch flanging. Experimental results on influence of trimming conditions on the shape of the sheared surface will be combined with the results of stretching strips after trimming.
Sergey F. Golovashchenko, Andrey M. Ilinich
Ford Research & Advanced Engineering, University of Michigan-Dearborn
SAE World Congress & Exhibition
Sheet/Hydro/Gas Forming Technology and Modeling, 2008-SP-2206, SAE International Journal of Materials and Manufacturing-V117-5EJ, SAE International Journal of Materials and Manufacturing-V117-5