1. What is a Cincinnati Brake Press Calculator?

Definition: This calculator estimates the required bending force (tonnage) for Cincinnati brake presses based on material properties and dimensions.

Purpose: It helps metal fabricators determine the appropriate press brake tonnage needed for specific bending operations.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( T \) — Required tonnage (tons)
• \( L \) — Length of bend (inches)
• \( t \) — Material thickness (inches)
• \( S \) — Tensile strength (psi)
• \( V \) — V-die opening (inches)

Explanation: The formula calculates the force needed to bend metal by considering material properties and tooling dimensions.

3. Importance of Press Brake Tonnage Calculation

Details: Proper tonnage estimation ensures successful bending operations, prevents machine overload, and helps select appropriate tooling.

4. Using the Calculator

Tips: Enter the bend length, material thickness, tensile strength (default 60,000 psi for mild steel), and V-die opening. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's the 2000 in the formula?
A: This converts pounds to tons (1 ton = 2000 lbs), as press brake capacity is typically measured in tons.

Q2: How do I determine V-die opening?
A: As a rule of thumb, V-die opening is typically 6-8 times material thickness for mild steel.

Q3: What tensile strength should I use?
A: Use material specifications or standard values (e.g., 60,000 psi for mild steel, 80,000 psi for stainless).

Q4: Does this account for air bending?
A: Yes, this formula is specifically for air bending operations common with Cincinnati brake presses.

Q5: Should I add a safety factor?
A: It's recommended to add 10-20% to the calculated tonnage for process variations.