What is the minimum radius.
Bend radius copper sheet.
To ascertain your k factor inside radius and material thickness expressed as a decimal you should use an bend allowance chart.
First we must start with the k factor.
In this case the minimum radius equals the respective sheet thickness.
We go beyond the general rules of sheet metal bending as our customers want tight bend radii for sheet metal parts.
The bend radius you select may not be available if the geometry of the part will not allow us to bend with the specific tooling required to achieve that radius.
0 017453 x 90 x 0 020 0 33 x 0 024 0 0438558984 inch bend allowance.
The bending angle is 90 sheet thickness 5 mm and the inside radius is 6 mm.
Recommended inside bend radius for sheet metal parts should be equal to material thickness.
It is the smallest inside bend radius that you can place in a piece of material before the tensile forces on the outside of the bend begin to tear the grains in the material apart.
For steel the factor is 1.
It is possible to choose other bends if you require but additional lead time and tooling charges may apply.
For example the minimum bending radius of aluminium is determined by multiplying the sheet thickness by a factor of 2.
If the punch nose radius.
The most common problem with bending a piece of sheet metal too tightly is.
We want to know the final length of the detail.
Crca inside bend radius equal to 0 65 times of sheet thickness is also enough.
If your bend radius needs to be adjusted a member of engineering design services team will contact you before your design is manufactured.
The tables below show bend radii and minimum bend sizes for materials and tooling combinations stocked by protocase.
Sharp inside bend radius in sheetmetal parts can cause material flow problems in soft material and fracturing in hard material.
The problem with bending too tightly.
The bend radii listed are standard minimum if manufacturing for aircraft and aerospace applications.
As an example if you want to bend 24 gauge sheet metal at a 90 angle the calculation would be.
If a piece of material is bent too tightly problems can occur.
The minimum bend radius data shown in these charts is measured to the inside of the bend.
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.
If copper has to be bent a factor of 1 5 must be used.