Sheet Metal Bending Minimum Flange Length

From a bend the minimum distance is 3 times material length plus the bend radius.

Sheet metal bending minimum flange length.

If you have any questions or want to discuss your design contact us. The required die width is 12 mm and tonnage per meter is 22. In low carbon steel sheet metal the minimum radius of a bend should be one half the material thickness or 0 80 mm 0 03 inch whichever is larger. The lowest common bench capacity is around 100 tonnes.

D 2 5t r. This tool allows you to determine tonnage internal radius v die opening and minimum flange you just have to insert the characteristics of the sheet metal to be bent. A cutout or the edge of your flange to your bend. When fabricating with a punch press the minimum space between two notches should be at least 2 time material thickness and at least 125.

Brittle materials may require v dies in the 8x to 12x range. Avoid large sheet metal parts with small bent flanges. The v die is usually selected to be 5x to 8x the workpiece thickness. Therefore for softer materials the recommended minimum hole diameter is equal to sheet thickness.

When using a punch press or laser cutting holes should never be less than that of the material thickness. As a rule of thumb the distance from the outside of the material to the bottom of the cutout should be equal to the minimum flange length as prescribed by the air bend force chart. Minimum flange length b the minimum flange length is sometimes the most difficult limitation for new brake operators and engineers to understand. To keep it simple i also use a 2 mm inside radius.

Minimum sheet metal flange bend length 3 x sheet thickness bend radius minimum hole diameter guidelines small sized punch are more prone to failure during sheetmetal punching operation. I can now see that the minimum flange length is 8 5 mm for such a bend so i have to keep it in mind when designing. Until the bend is completed the sheet metal must be supported on both sides of the v opening. Determine your minimum bend by measuring the distance from your closest feature i e.

Let s say i have a 2 mm thick sheet and i want to bend it. If it s not supported on both sides the sheet slides into the v opening and the bend line will slide with it. Discover all our calculation tools in the calculators section of the top menu. The tool can calculate the required bending force for bending aluminum stainless steel mild steel and weldox or strenx high strength steels.