Sheet Metal Minimum Flange Length

A cutout or the edge of your flange to your bend.

Sheet metal minimum flange length.

If you have any questions or want to discuss your design contact us. If it s not supported on both sides the sheet slides into the v opening and the bend line will slide with it. We are here to help. 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.

While specifying flange widths in your drawing please ensure that the width of the flange does not go below four times the thickness of the sheet metal. Runs right at the limit of precision flat sheet metal in a job shop environment. 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. Choose a bend radius that matches your minimum bend.

The tool can calculate the required bending force for bending aluminum stainless steel mild steel and weldox or strenx high strength steels. 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. Discover all our calculation tools in the calculators section of the top menu. D 2 5t r.

As a general recommendation 0 005 in. 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. For bent sheet metal variation in the raw material thickness increases the recommended precision to 0 010 in. Therefore for softer materials the recommended minimum hole diameter is equal to sheet thickness.

Until the bend is completed the sheet metal must be supported on both sides of the v opening. Otherwise the tool will create marks on the sheet metal surface while manufacturing. Avoid large sheet metal parts with small bent flanges.