Bends should be at least six times the material s thickness plus the radius of the curl.
Bend radius sheet metal rule thumb.
The inside bend radius should be equal to the thickness of the material that you re forming.
Larger radius will just make some other calculations a little more difficult.
Choose a bend radius that matches your minimum bend.
The minimum bend radius for mild steel sheet metal.
This avoids later troubles overthinking and silly mistakes.
Minimum sheet metal bending radius.
Determine your minimum bend by measuring the distance from your closest feature i e.
Note that this is just a rule of thumb.
Here s a good rule of thumb for most materials.
If you re bending 0 020 thick material use a 0 020 radius.
Outside radius of curls must be at least twice the sheet s thickness.
Next subtract 1 from that answer.
Rule of thumb for minimum bend radius.
If you have any questions or want to discuss your design contact us.
What could be simpler than choosing the inner radius ir just the same as the material thickness.
In other words if you re bending 1 8 sheet use a tool with a 1 8 radius to form the inside of the bend.
5 1 4.
The sheet metal design rule of thumb in this case is.
Distance from outside mold line to the bottom of the cutout should be equal to the minimum flange length prescribed by the air bend force chart.
A cutout or the edge of your flange to your bend.
2 5 material thickness bend radius.
The distance between the sheet metal bend line and edge of the hole should be two times or greater the thickness of the sheet metal.
Dropping below that value can bring problems your way.
So in this case the minimum inside bend radius is 2 times the material thickness.
Now multiply that answer by the plate thickness.
The sheet metal design rule of thumb in this case is.
If the material is 0 5 in.