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Press Brake Force Formula:
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The press brake force formula calculates the required tonnage to bend steel sheet metal. It considers material thickness, bend length, and die opening to determine the necessary force for successful bending operations.
The calculator uses the press brake force formula:
Where:
Explanation: The formula accounts for the quadratic relationship between material thickness and required bending force, with adjustments for die opening size and bend length.
Details: Accurate force calculation is crucial for selecting the appropriate press brake machine, preventing machine overload, ensuring quality bends, and maintaining tooling longevity.
Tips: Enter material thickness in inches, bend length in inches, and die opening in inches. All values must be valid positive numbers.
Q1: Why is material thickness squared in the formula?
A: The required bending force increases quadratically with material thickness because thicker materials require more energy to deform and create the bend.
Q2: What is the significance of die opening size?
A: Larger die openings require less force but produce larger bend radii, while smaller die openings require more force but produce tighter bend radii.
Q3: Does this formula work for all materials?
A: This specific formula with the 575 constant is designed for mild steel. Different materials require different constants based on their tensile strength.
Q4: How does bend length affect the required force?
A: Required force increases linearly with bend length - longer bends require proportionally more force to form the bend across the entire length.
Q5: What safety factors should be considered?
A: It's recommended to add a 20-30% safety factor to the calculated force to account for material variations, tool wear, and other variables.