A simple rule of thumb.
Bend radius sheet metal rule thumb.
Also spaces between pierced holes and bends should accommodate the bend radius h and be far enough from the bend.
The sheet metal design rule of thumb in this case is.
The problem with bending too tightly.
Bend radii minimum bend sizes.
4 0 5 2.
Also known as press braking flanging die bending folding and edging this method is used to deform a material to an angular shape.
Divide 50 by the material s tensile reduction percentage as specified by your supplier.
Never design a hole smaller than 040 diameter unless laser cutting.
Bending is one of the most common sheet metal fabrication operations.
This is done through the application of force on a workpiece.
Use this document to choose values that are both manufacturable and meet your needs.
When using a punch press the diameter of a hole should always be equal to that of your tooling and you should never use a tool who s diameter is less than that of the material s thickness.
If the material is 0 5 in.
There s a rule of thumb to determine a steel s minimum bend radius and this generally works for aluminum too.
2 5 material thickness bend radius.
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.
If the steel has a tensile reduction value of 10 percent divide 50 by that value.
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.
If you re bending 0 020 thick material use a 0 020 radius.
The inside bend radius should be equal to the thickness of the material that you re forming.
Relief cuts for bends must be at least one sheet s thickness in width and be longer than the bend radius.
Here s a good rule of thumb for most materials.
Minimum sheet metal bend radius depends on the selection of tool and the process.
The more ductile the sheet metal the.
If a piece of material is bent too tightly problems can occur.
Minimum sheet metal bending radius.
So in this case the minimum inside bend radius is 2 times the material thickness.
Greg paulsen is director of applications engineering at xometry.
Now multiply that answer by the plate thickness.
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.
Finding the true minimum bend radius for steel or aluminum plate requires a little research.
Note that this is just a rule of thumb.
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.
