Cutting & Shearing
Punching Force Calculator
Calculate the required force for punching or blanking operations in sheet metal. This calculator helps you determine the tonnage needed for your punch press.
- Punch Perimeter: The total perimeter of the punch shape (π × d for circles).
- Material Thickness: The sheet metal thickness being punched.
- Shear Strength: Material shear strength (≈ 0.75 × tensile strength).
- Force Output: Required punching force in kN and tons.
Punching Force Calculator
Units:
mm
mm
MPa
Theory & Formulas
Punching Force Formula:
F = P × T × τ
Where:
- F = Punching force
- P = Punch perimeter
- T = Material thickness
- τ = Shear strength
Common Perimeters:
- Circle: π × diameter
- Square: 4 × side
- Rectangle: 2 × (length + width)
Shear Strength ≈ 0.75 × Tensile Strength
F = P × T × τ
Where:
- F = Punching force
- P = Punch perimeter
- T = Material thickness
- τ = Shear strength
Common Perimeters:
- Circle: π × diameter
- Square: 4 × side
- Rectangle: 2 × (length + width)
Shear Strength ≈ 0.75 × Tensile Strength