Punching Force
Compute punching force F from shear perimeter P, thickness t and shear strength τ.
Inputs
Formula
F = P·t·τ
Add stripper and ejector forces in practice.
Fundamentals
Compute punching force F from shear perimeter P, thickness t and shear strength τ.
This tool computes Punching Force from the formula: F = P·t·τ
History
Manufacturing evolved with machine tools and CNC; cutting-parameter calculation is central to process planning.
Engineering applications
Used for cutting parameters, tooling and forming process design.
Glossary
| Shear perimeter P | Input parameter |
| Thickness t | Input parameter |
| Shear strength τ | Input parameter |
| Punch force F | Output result |
How to use
- Fill in Shear perimeter P, 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 Punch force F in the results area.
Formula · Worked Example · Knowledge
Formula
核心计算关系：F = P·t·τ
输入变量：
- Shear perimeter P
P— mm - Thickness t
t— mm - Shear strength τ
tau— MPa
输出结果：
- Punch force F
F— kN
假设/适用：Cutting params (v, f, a_p) must stay within tool/workpiece recommended windows.
Worked Example
根据公式 F = P·t·τ，取 Shear perimeter P = 200 mm；Thickness t = 2 mm；Shear strength τ = 300 MPa。
代入计算得：Punch force F = 120 kN。
Key Points
- Cutting params (v, f, a_p) must stay within tool/workpiece recommended windows.
- MRR scales with feed speed, depth and width; sets required spindle power.
- Feed f = f_z·z·n; match per-tooth feed with spindle speed.
Parameters
Inputs
| Parameter | Symbol | Unit | Default |
|---|---|---|---|
| Shear perimeter P (mm) | P | mm | 200 |
| Thickness t (mm) | t | mm | 2 |
| Shear strength τ (MPa) | tau | MPa | 300 |
Outputs
| Result | Symbol | Unit |
|---|---|---|
| Punch force F | F | kN |
Applications
- Cutting parameters and speed
- Gear measurement (3-wire/base tangent)
- Blanking and deep-drawing process
FAQ
What formula does this tool use?
This tool computes per ISO / AGMA / ASME standard formulas: F = P·t·τ
How accurate are the results?
Results match input precision, based on SI units and common engineering approximations; for critical duty re-check with a safety factor.
Where is it used?
Cutting parameters and speed