First we must start with the k factor.
Bend radius copper sheet.
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.
Tube and pipe bending.
It is normally expressed in terms of multiples of the material thickness e g.
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.
0 017453 x 90 x 0 020 0 33 x 0 024 0 0438558984 inch bend allowance.
In this case the minimum radius equals the respective sheet thickness.
We want to know the final length of the detail.
To ascertain your k factor inside radius and material thickness expressed as a decimal you should use an bend allowance chart.
The first uses bending springs and the second a pipe bending machine.
We go beyond the general rules of sheet metal bending as our customers want tight bend radii for sheet metal parts.
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 example the minimum bending radius of aluminium is determined by multiplying the sheet thickness by a factor of 2.
Sheet metal bend radii if these guidelines are not followed more research and or some form of analysis may be requried.
The bend radii listed are standard minimum if manufacturing for aircraft and aerospace applications.
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.
Specifing a bend radius from here will help prevent hair line cracks.
If the punch nose radius.
As a general rule the minimum bending radius for copper bar is equal to the thickness of the bar.
Recommended minimum bend radii for steel and aluminum.
Cutting copper sheet and plate.
The bending angle is 90 sheet thickness 5 mm and the inside radius is 6 mm.
For steel the factor is 1.
As an example if you want to bend 24 gauge sheet metal at a 90 angle the calculation would be.
The minimum bend radius data shown in these charts is measured to the inside of the bend.
If copper has to be bent a factor of 1 5 must be used.
What is the minimum radius.