Blankholderforce
5.2.4
The calculation is based on the effective blank holder area and the required blankholder pressure. The following relationship results for round drawn parts in the predraw and in subsequent strokes:
Eqn. 1
| Blankholderforce | FN | = | kN |
| Blank diameter | d0 | = | mm | |||
| Diameter punch | d1 | = | mm | |||
| Die radius | rM | = | mm | |||
| Clearance | uZ | = | mm | |||
| Blankholder Pressur | pn | = | MPa |
Calc 1
blankholderforce
The required blankholder pressure pn depends on the wall thickness, the punch diameter and the tensile strength of the material (see section on blankholder pressure ).
Other relevant information can be found in the Clearance and Die Radius sections.