Impact of superimposed pressure on dieless incremental sheet metal forming with two moving tools

摘要

Dieless incremental sheet metal forming is restricted by different effects. Some of the major issues are the limited maximum draw angle, a commonly reduced surface quality of the deformed areas and the low geometrical accuracy in concave features. This paper deals with both theoretical and experimental investigations on the influence of superimposed pressure induced by two moving forming tools. It has been verified that the stated issues can be improved dependent on the applied force and the relative position of the two tools. Applying this approach one major achievement has been an increase of 12.5% of the maximum draw angle.