1.0 KiB
1.0 KiB
Calculating Bend Allowance
Calculating bend allowance involves considering several key factors:
Bend Angle (α): The angle at which the sheet metal is bent.
Inside Radius (R): The radius of the bend where the material is not deformed.
Material Thickness (T): The thickness of the sheet metal being bent.
K-factor (K): A value that represents the position of the neutral axis (where the material is neither stretched nor compressed) relative to the material thickness. It varies based on the material properties and the bending radius
The formula for calculating bend allowance (BA) is given as:
[ BA = \alpha \times (\pi \times R + \frac{K \times T}{2}) ]
This formula takes into account the bend angle, the inside radius, the thickness of the material, and the K-factor to determine the arc length of bending measured along the neutral axis of the metal plate 14. Once the bend allowance is calculated, it is added to the flat length to determine the required sheet metal length needed to form the desired workpiece