The Assessment of the Effect of Geometrical Shape of Punch Through the Deep Drawing Operation in Comparison to Other Factors

Deep drawing is one of the frequently applied methods in sheet metal forming. Optimizing the factors involved in this process is one of the most important research fields for decreasing production costs of this method. To reach optimal values of these factors، the effectiveness of each of the factors involved has to be studied by analytical، numerical، an experimental methods. Vast research has been done on the effective factors (friction، punch and die radii، blank-holder force، sheet metal substance، etc.) and the amount of effect each factor has on the deep drawing process، but there hasn''t been mentionable research done on the effectiveness of geometrical symmetry and shape of the pieces produced and other effective factors on the whole process. In this article، we have used the FEM and the process simulation method (ABAQUS commercial software) and the Taguchi technique in the design of experiments (DOE) and have finally analyzed the results based on variance (ANOVA)، to study the effectiveness of geometrical symmetry and shape of the pieces on the deep drawing process and the possible changes they impose on the other effective factors on the process (mechanical properties of sheet، punch and die radii، friction، blank-holder force).