Intermach Press Brake Calculator
Air bending · first-pass setup
Units Metric (mm / kN / t)
1
Tooling & bend
mm
Recommended: 6 × t = 18 mm
mm
deg
Empirical multiplier in the air-bend force equation.
3
Results
Required bend force
8.9t total
8.9 t/m
·
87 kN
⚠ Die opening differs a lot from the recommended 18 mm.
2
Material
Tensile strength Rₘ used in force calc: 400 MPa
mm
mm
Transverse bends are more forgiving; a larger radius is needed when bending along the grain.
4
Result details
Bend at max stroke
112.2deg
punch angle before springback
Springback
3.8deg
overbend to compensate
Punch depth
0.0mm
stroke into the die
Min. die depth
21.5mm
clearance needed
Min. flange (leg)
31mm
measured to bend
Min. inside radius
3.6mm
r/t = 1.2 applied
Bend allowance
56.9mm
neutral-axis arc
Recommended V
18mm
die opening
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