DIN 6935 Single Bend Calculator
This sheet metal bending calculator accounts for the flat-pattern length compensation caused by bending. It follows the German DIN 6935 standard and helps you estimate the correct bend radius and developed length for sheet metal parts that will be bent on a press brake.
What the Calculator Uses
- t: sheet thickness in mm
- V: die opening in mm
- alpha: bend angle in degrees
- a and b: flange lengths in mm
What the Calculator Returns
- r: estimated inner bend radius
- k: K-factor used in the DIN 6935 bend calculation
- v: bend deduction / correction value
- L: flat-pattern developed length
Flat Pattern Formula
The diagram expresses the developed length as L = a + b - v, with the bend line and flange compensation shown visually in the calculator sketch.
Calculator Diagram
