Bending Force, Radius and Angle Leverage
Bending force
Bending force
–t
Maximum load is reached at roughly a 120° opening angle (unlubricated). Trial bends are recommended.
Tool geometry from the data sheet
Enter R/t and W/t from the manufacturer's data sheet – no values from this page.
Punch radius
– mm
Die width
– mm
At least t/2 without rolling. Tighter radii are permitted across the rolling direction than along it.
Position deviation from angle tolerance
How strongly an angle deviation acts at the end of a leg.
Position deviation at the leg tip
–mm
Rules of thumb: roughly ±1° for air bending without angle measurement, roughly ±0.5° with an angle-measuring system and press correction.
On a batch change without a new setup trial, the deviation is noticeably larger, in both directions.
Disclaimer: All calculation aids, formulas, tables and reference values on this page are for guidance only. They do not replace the applicable standard texts, the material and equipment manufacturers' data, a welding procedure specification, or a case-by-case technical review. Invictix Systems gives no warranty as to accuracy, completeness or currency and accepts no liability for damages arising from their use. Only the applicable standards, manufacturer data and your own production trials are binding.
Calculation aid based on: Reference book, chapter 5 and 13.1, 13.5. Replaces neither the standard text nor manufacturer data nor a welding procedure specification.