Finite Element Analysis of the Axially Non-symmetrical Piercing Punches Performance for Belt Perforation

Modification of the punch geometry can greatly reduce force necessary to perform perforation belt. This paper presents research on axially non-symmetrical piercing punches – double sheared one and with a cylindrical bowl. FEM analysis was performed for variable tip angle β in 60-150° range or bowl radius R 5.25-10 mm constant diameter D = 10 TFL10S Based obtained results, influence (for punch) FP pneumatic cylinder stroke increase Δ s determined. used obtain function displacement characteristics various tool geometry. geometrical parameters were Additionally, their application punching die design process, where effective features tools are desired, is presented.