Bend radii minimum bend sizes.
Minimum radius on bending 6mm steel sheet.
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Since commercial sheet metal bending can be done with less concern for stresses caused during forming operation the radius can be near zero for thin sheet metal.
The minimum bend radius data shown in these charts is measured to the inside of the bend.
These dimensions are all in relation to a 90 angle.
It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii.
The tables below show bend radii and minimum bend sizes for materials and tooling combinations stocked by protocase.
Maximum weight is 40 kg.
It is possible to choose other bends if you require but additional lead time and tooling charges may apply.
Maximum dimensions are 2980 x 1200 mm.
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.
The bend radii listed are standard minimum if manufacturing for aircraft and aerospace applications.
In steel between 0 5 and 0 8 in.
To keep it simple i also use a 2 mm inside radius.
The minimum inside bend radius is even larger when bending with the grain.
Use this document to choose values that are both manufacturable and meet your needs.
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.
By multiplying the material thickness by 0 63 63 percent the natural minimum radius can be determined in this case 0 063 in.
In principle does not seem that this operation is complicated and difficult.
The problem with bending too tightly.
The bending of sheet metal with a punch and an array mounted at a folder is quite natural and normal.
If a piece of material is bent too tightly problems can occur.
We go beyond the general rules of sheet metal bending as our customers want tight bend radii for sheet metal parts.
Let s say i have a 2 mm thick sheet and i want to bend it.
Each and every bend in a piece of sheet metal has a certain minimum internal radius that needs to be taken into account when planning the design of a sheet metal form.
Picture a sheet of 0 100 in thick material 2 54 mm.
Maximum sheet thickness for all other steel is 6 mm.
If the product contains one or more sharp bends use the dimensions from the sharp tables for all bends in.
Maximum sheet thickness for aluminum and stainless steel is 6 mm.
