Bend Force Calculator

Formula

The formula for calculating the bend force is:

\[ BF = \frac{k \cdot L \cdot St \cdot t^2}{d} \]

Where:

\( BF \) is the bend force (lbs)
\( k \) is a constant based on the die shape (1.33 for V dies)
\( L \) is the length of the bend (inches)
\( St \) is the tensile strength of the material (lb/in²)
\( t \) is the thickness of the material (inches)
\( d \) is the unsupported material (die opening) (inches)

What is a Bend Force?

A bending force is the total force required to bend a material with a particular die shape and opening. It is crucial in various manufacturing processes, such as metal forming and sheet metal bending, to ensure the material is bent accurately and efficiently.

Example Calculation

Let's assume the following values:

Constant (k) = 1.33
Length of the Bend (L) = 10 inches
Tensile Strength of the Material (St) = 50000 lb/in²
Thickness of the Material (t) = 0.25 inches
Die Opening (d) = 2 inches

Using the formula to calculate the bend force:

\[ BF = \frac{1.33 \cdot 10 \cdot 50000 \cdot 0.25^2}{2} = \frac{1.33 \cdot 10 \cdot 50000 \cdot 0.0625}{2} = \frac{41562.5}{2} = 20781.25 \text{ lbs} \]

The bend force is 20781.25 lbs.