Shank is a tool element. This is fixed on the top plate. Shank is fixed in the press ram. This should be strong enough to take the total weight of the punch until and stripping force. The diameter of the shank fits the bore within the press ram. The shank diameter is standardized in relation with the press ram. The shank diameter is standardized in relation with the press ram bore, which is varying from press to press depending on the capacity of the press.
There are different types of shank standards. Selection of the shank is based on the need base. It is made out of mild steel. The location of the shank point is very important and different load acting on top plate is to be considered. The balancing of cutting punches is one of the most important aspects to be considered during the punching operation. Unbalanced force distribution on the tool top may cause under wear on the punch and die as well as on the pillars. The resultant force of all the cutting forces, acting on many different punches should pass through the shank centre.
