) to determine the exact length of the flat blank needed to produce a bent part, accounting for changes in the "neutral fiber" during the process.
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This 13-page document is the core of the series. Here is a breakdown of its essential chapters: Din 6935 Standard Pdf
Because sheet metal stretches on the outside of a bend and compresses on the inside, the length of the metal changes during the bending process. DIN 6935 provides the mathematical formulas and correction factors (specifically the "bending factor" or Biegefaktor ) required to calculate the precise . ) to determine the exact length of the
The official publisher and distributor of DIN standards. Here is a breakdown of its essential chapters:
Where:
For professionals who need a quicker, more direct solution, is a powerful time-saving tool. Its title is "Cold bending of flat steel products - Supplement 2: Calculated compensating values υ". This supplement takes the formulas from the core standard and Supplement 1 and does all the heavy lifting. It provides pre-calculated tables of compensation values (υ) for a wide range of bend angles, radii, and material thicknesses. All these values were calculated to four decimal places based on the standard's formulas, then rounded to two decimal places for use in the final tables. For a production engineer on the shop floor, this document is often the most practical resource.