Sheet Metal Blanking
Compute blanking force F = π d t τ and punch face compressive stress σ_c.
Inputs
Formula
F = π d t τ; σc = F/(π d t) = τ
How to use
- Fill in Blank dia. d, Thickness t, Shear strength τ in the Inputs section (watch the unit on each field).
- Click Calculate; the tool evaluates the formula shown above.
- Read Blanking force F, Punch stress σc in the results area.
Formula notesBlanking force P = L·t·τ (L perimeter, t thickness, τ shear strength); stripper force ≈ 5–10% P.