Minimum Bend Radius Formula For Sheet Metal

It shall be equal to three times of sheet thickness plus bend radius.

Minimum bend radius formula for sheet metal.

You will need to know your material thickness mt the bend angle b the inside radius ir and the k factor k. Large radius bending also known as r bending large radius bending is when the inside radius is greater than 8 times the material thickness. Kink a light bend typically between 5 and 15 which is used to stiffen a flat piece of metal. 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.

Bend radii minimum bend sizes. I have already learned about the following formulas. Discover all our calculation tools in the calculators section of the top menu. 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.

It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii. For this material this is the minimum producible inside radius with air forming. Leg length of the workpiece from the edge to the outside tangent point of the bend radius. Minimum recommended sheet metal bend length minimum sheet metal flange bend length is required to avoid cracks in the bending area.

Assume the sheet of material is in pure bending i e no additional tension is applied during forming. The radius is produced as a percentage of the die opening regardless of the die style. For a sheet metal stock with inch thickness determine the minimum tool radius for both the steel and aluminum alloys that will not tear the material. However it is important to know that this is just a broadly applicable rule of thumb you can follow for making bends in steel.

The tool can calculate the required bending force for bending aluminum stainless steel mild steel and weldox or strenx high strength steels. 6 t 2 edge distance of v groove 1 8 t 2 t see the picture. The bend allowance formula takes into account the geometries of bending and the properties of your metal to determine the bend allowance. Minimum sheet metal flange bend length 3 x sheet thickness bend radius.