A case study: Comparative examination of active punch adjustment and relative fixation in multi-point forming for 3d free-form shape

Multi-point sheet metal forming (MPF) is one of the versatile methods for shaping sheet metal. Mostly utilized in prototypes for automotive and aerospace products, MPF saves time and money. In this study, active punch modifications and relative fixation were applied to examine how different forming types affect multi-point forming. By using the finite element program, three-dimensional shape of multi-point forming (MPF) were modeled and examined. This form is made of 1 mm thick aluminum 1100 sheet metal. Based on the models' needed load and effective stress distributions for sheet metal, three different diameters, 10 mm, 12 mm, and 14 mm, were examined. Based on the results, active punch adjustment for all pins was a more appropriate forming type for this shape.