Minimum Bend Radius Formula For Sheet Metal

The radius is produced as a percentage of the die opening regardless of the die style.

Minimum bend radius formula for sheet metal.

However it is important to know that this is just a broadly applicable rule of thumb you can follow for making bends in steel. 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. Minimum recommended sheet metal bend length minimum sheet metal flange bend length is required to avoid cracks in the bending area. I have already learned about the following formulas.

You will need to know your material thickness mt the bend angle b the inside radius ir and the k factor k. Use this document to choose values that are both manufacturable and meet your needs. Bend radii minimum bend sizes. 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.

It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii. Kink a light bend typically between 5 and 15 which is used to stiffen a flat piece of metal. Minimum sheet metal flange bend length 3 x sheet thickness bend radius. The bend allowance formula takes into account the geometries of bending and the properties of your metal to determine the bend allowance.

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. 6 t 2 edge distance of v groove 1 8 t 2 t see the picture. Large radius bending also known as r bending large radius bending is when the inside radius is greater than 8 times the material thickness. 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.

It shall be equal to three times of sheet thickness plus bend radius. The tool can calculate the required bending force for bending aluminum stainless steel mild steel and weldox or strenx high strength steels. Leg length of the workpiece from the edge to the outside tangent point of the bend radius. For this material this is the minimum producible inside radius with air forming.