NUMERICAL SIMULATION OF THE FINE BLANKING PROCESS OF SHEET TITANIUM

The present study has been undertaken in order to investigate the new possibilities of improvement in quality of the cut-surface of titanium blanks. For the intended purpose, a number of numerical simulations of the blanking process were carried out. Fine blanking is one of the most often used methods of finished product manufacturing. Application of blanking with reduced clearance or blanking with material upsetting by V-ring indenter allows for obtaining the high quality cut-surface which does not need further machining. Application of the finite element method (FEM) for numerical simulations allows for effective analysis of the fine blanking processes. In the paper the results of numerical simulation of fine blanking for a disk made of Grade 2 sheet titanium have been presented. The calculations were carried out using ADINA System v. 8.6 based on FEM. Determination of the effect of clearance between cutting edges, and presence and location of V-ring indenter on the stress and strain distribution in shearing zone was the main goal of the work. The numerical simulations showed the effect of tool geometry on a course of blanking process and consequently on the quality and shape of the cut-surface. Based on the numerical simulation it is only possible to deduce the cut-surface appearance, thus the numerical simulations should be completed with experimental tests.