Stripping Force Calculator

Stripping Force Formula:

\[ P_s = K \times L_{cut} \times t_{blank} \]

Stripper Force (P_s):

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1. What is Stripping Force?

Stripping Force is the force applied by a stripper plate or stripper ring to remove the formed part from the punch after the forming operation is completed in metal stamping processes.

2. How Does the Calculator Work?

The calculator uses the stripping force formula:

\[ P_s = K \times L_{cut} \times t_{blank} \]

Where:

\( P_s \) — Stripper Force (N)
\( K \) — Stripping Constant (empirical constant)
\( L_{cut} \) — Perimeter of Cut (m)
\( t_{blank} \) — Blank Thickness (m)

Explanation: The stripping force is proportional to the cutting perimeter and blank thickness, with the stripping constant accounting for material properties and process conditions.

3. Importance of Stripping Force Calculation

Details: Accurate stripping force calculation is crucial for proper tool design, ensuring successful part ejection, preventing tool damage, and maintaining production efficiency in metal stamping operations.

4. Using the Calculator

Tips: Enter the stripping constant (typically 0.02-0.06 for most materials), perimeter of cut in meters, and blank thickness in meters. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical value for the stripping constant?
A: The stripping constant typically ranges from 0.02 to 0.06 N/mm², depending on material type and tooling conditions.

Q2: How is perimeter of cut measured?
A: Perimeter of cut is the total length of all cutting edges in the punching operation, measured along the contour of the cut.

Q3: Why is stripping force important in tool design?
A: Proper stripping force calculation ensures that the stripper mechanism has sufficient force to eject parts without causing tool damage or part deformation.

Q4: Does material type affect stripping force?
A: Yes, different materials have different friction coefficients and springback characteristics, which influence the required stripping force.

Q5: Can this formula be used for all punching operations?
A: This formula provides a general estimation. Complex shapes or special materials may require additional factors or experimental validation.