Considerations on process performance in incremental forming by inducing high frequency vibration

Abstract

The paper is focused on the formability and other specimen characteristics obtained in Single Point Incremental Forming (SPIF) processes. In particular, it is known that friction heavily affects the results because the deformation is very localized at the contact between punch and sheet. Despite the presence of the lubricant, some effects are evident, such as the material wear, the staircase shaping and the geometry torsion. Finally, it is reasonable to think that the effect is also played on the allowable formability and then, like in other metal forming processes, a high frequency oscillation is imposed to the sheet in order to minimize the friction effect. The results are accurately discussed in the paper. © Springer Science+Business Media B.V. 2009.