) required to achieve a specific formed shape. The total unfolded length is typically calculated using the following formula: L=∑Ls+∑vcap L equals sum of cap L sub s plus sum of v Lscap L sub s : The lengths of the straight segments of the bend profile.
: A detailed breakdown of sections including scope, calculation methods, and material keys is available on Scribd - DIN 6935 Soğuk Bükme .
In the world of mechanical engineering and precision metalworking, few standards are as practically significant as . Titled “Sheet Metal Bending; Technical Information,” this standard serves as the definitive guide for engineers and fabricators calculating the geometries of bent sheet metal parts.
For engineers, sheet metal fabricators, and designers, achieving precise bends is critical for the structural integrity and functionality of parts. The (Cold Bending of Flat Rolled Steel) is the industry benchmark for calculating the necessary dimensions of a flat part before it is bent, ensuring that the final, formed part matches the required specifications. Din 6935 Standard Pdf
Please note: and superseded by the international standard DIN EN ISO 13722 . This report reflects the historical relevance, technical content, and the transition to the current standard.
-factors derived from DIN 6935 for daily operational reference.
The standard is also listed and available for purchase on technical aggregator platforms such as Accuris. ) required to achieve a specific formed shape
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.
In DIN 6935, this is often referred to as the equalizing factor ( It shifts depending on the ratio of the inner bend radius ( ) to the sheet thickness ( 2. Bend Deduction and Allowance
) in the bend area typically decreases, often by approximately , depending on the material and the sharpness of the bend. 3. Compensation Value ( In the world of mechanical engineering and precision
. It is widely used in mechanical engineering and steel construction to calculate the precise developed length
The core of DIN 6935 was the definition of minimum bending radii ($r_min$) relative to the material thickness ($s$). Bending a radius tighter than the specified minimum often results in cracks on the outer fiber of the bend.