P=650S*S*L/v。
- P: Nominal pressure kn.
- S: Plate thickness mm.
- L: Bending length m.
- V； Notch width mm.
Where V is 8-10 times the plate thickness.
This force is related to the following aspects: material strength; bending radius; V-groove width; required bending length.
In fact, there are calculation formulas on the label of ordinary press brake. Ordinary low carbon steel is usually calculated according to the following formula:
Bending force = 65 × plate thickness (cm) ² × plate width (cm) / 8 ~ 10 times of plate thickness (cm).
