Minimum Bend Radius Formula For Sheet Metal

It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii.

Minimum bend radius formula for sheet metal.

So if the metal plate is 75 thick you would multiply 4 x 75 3 so your minimum inside bend radius would be roughly 3 times the thickness of the material in this case or 2 25. Leg length of the workpiece from the edge to the outside tangent point of the bend radius. Minimum sheet metal flange bend length 3 x sheet thickness bend radius. Assume the sheet of material is in pure bending i e no additional tension is applied during forming.

6 t 2 edge distance of v groove 1 8 t 2 t see the picture. For this material this is the minimum producible inside radius with air forming. However it is important to know that this is just a broadly applicable rule of thumb you can follow for making bends in steel. Bend radii minimum bend sizes.

For example in the case of 1 0mm plate to the edge distance 1 5 then the minimum z bending h 6 1 2 1 5 1 8 1 2 1 6 4. I have already learned about the following formulas. The bend allowance formula takes into account the geometries of bending and the properties of your metal to determine the bend allowance. If you are working with a material thickness of 0 100 in multiply that by 0 63 to get a minimum inside bend radius of 0 063 in.

Kink a light bend typically between 5 and 15 which is used to stiffen a flat piece of metal. You will need to know your material thickness mt the bend angle b the inside radius ir and the k factor k. The radius is produced as a percentage of the die opening regardless of the die style. Minimum recommended sheet metal bend length minimum sheet metal flange bend length is required to avoid cracks in the bending area.

The tool can calculate the required bending force for bending aluminum stainless steel mild steel and weldox or strenx high strength steels. Use this document to choose values that are both manufacturable and meet your needs. Large radius bending also known as r bending large radius bending is when the inside radius is greater than 8 times the material thickness. 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.