Punch Radius

Sheet-Metal Design

Punch radius is the round radius of the tip of the punch in a bending machine. In figure 1 the die width (V) and the punch radius (R) are demonstrated.

Figure 1: Die width V and punch radius.

In sheet metal design you can define a die width v and punch radius for each bend if you have enabled a stretch calculation method that utilizes the bend deduction table. Based on these values the strain caused by the bending is taken into account.