A simple rule of thumb.
Bend radius for sheet metal rule of thumb.
Minimum sheet metal bend radius depends on the selection of tool and the process.
The sheet metal design rule of thumb in this case is.
Here s a good rule of thumb for most materials.
So in this case the minimum inside bend radius is 2 times the material thickness.
For thicknesses of mild steel up to in the radius r of a bend is normally 1 8 of the v opening resulting in this formula.
Minimum sheet metal bending radius.
The more ductile the sheet metal the.
This value will vary by grade.
Finding the true minimum bend radius for steel or aluminum plate requires a little research.
Greg paulsen is director of applications engineering at xometry.
4 0 5 2.
The stronger the material the larger the radius will be when using the same v opening.
Also spaces between pierced holes and bends should accommodate the bend radius h and be far enough from the bend.
Use this document to choose values that are both manufacturable and meet your needs.
If the material is 0 5 in.
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.
Which can be then adjusted for other materials.
But the material s resistance or uts will affect the radius too.
There s a rule of thumb to determine a steel s minimum bend radius and this generally works for aluminum too.
Bending is one of the most common sheet metal fabrication operations.
Divide 50 by the material s tensile reduction percentage as specified by your supplier.
Bend radii minimum bend sizes.
If you re bending 0 020 thick material use a 0 020 radius.
Note that this is just a rule of thumb.
It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii.
If the steel has a tensile reduction value of 10 percent divide 50 by that value.
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.
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.
Also known as press braking flanging die bending folding and edging this method is used to deform a material to an angular shape.
R v 8.
Usually the preferred distance between holes and a bend is 1 5 times the sheet.
The force must exceed the material s yield strength to achieve a plastic deformation.
Now multiply that answer by the plate thickness.
If a piece of material is bent too tightly problems can occur.
Relief cuts for bends must be at least one sheet s thickness in width and be longer than the bend radius.
This is done through the application of force on a workpiece.