You will need to know your material thickness mt the bend angle b the inside radius ir and the k factor k.
Bend radius for 2mm sheet metal.
Generally speaking the thicker a piece of sheet metal is the wider the internal bend radius will.
When the sheet metal is bent a bend radius is required at the bend.
The hardness of the metal.
The bend allowance formula takes into account the geometries of bending and the properties of your metal to determine the bend allowance.
Bending radius there should have bending radius for sheet metal bending bending radius should not be too large or too small it should be chosen appropriately.
If the bending radius is too small it will cause cracking at the bend position.
If the bending radius is too small the bending will be cracked and if the bending radius is too large the bending is easy to rebound.
To keep it simple i also use a 2 mm inside radius.
The thickness of the metal.
If the bending radius is too large it is easy to rebound.
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 bending radius should not be too large or too small and should be chosen appropriately.
Being able to read a bend force chart is crucial for any brake press operator and sheet metal engineer.
Let s start with 90 degrees bend which is the most simple scenario.
Bend radii minimum bend sizes.
The tool can calculate the required bending force for bending aluminum stainless steel mild steel and weldox or strenx high strength steels.
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.
We are going to review three bending scenarios with three different bending angles.
It is possible to choose other bends if you require but additional lead time and tooling charges may apply.
The gauge inside radius die opening and minimum flange length are all interconnected through different equations and relationships the air bend force.
The material thickness will be measured in decimal form not by the gauge number.
Use this document to choose values that are both manufacturable and meet your needs.
Let s say i have a 2 mm thick sheet and i want to bend it.
An air bend force chart or force chart breaks down a number of key components of sheet metal bending in an easy to reference format.
The tables below show bend radii and minimum bend sizes for materials and tooling combinations stocked by protocase.
It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii.
Discover all our calculation tools in the calculators section of the top menu.
60 90 and 120 and we will calculate k factor bend allowance and bend deduction for them.
The bending tool has a radius of 30 mm which means that our inside bend radius r is 30 mm.
There are a two major factors that affect how tight you can make the internal radius of a bend in a piece of sheet metal.
