Bend Radius Sheet Metal Rule Thumb

The most common problem with bending a piece of sheet metal too tightly is.

Bend radius sheet metal rule thumb.

Note that this is just a rule of thumb. If you re bending 0 020 thick material use a 0 020 radius. Bending is one of the most common sheet metal fabrication operations. The sheet metal design rule of thumb in this case is.

Never design a hole smaller than 040 diameter unless laser cutting. Divide 50 by the material s tensile reduction percentage as specified by your supplier. The problem with bending too tightly. If the material is 0 5 in.

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. Bend radii minimum bend sizes. Minimum sheet metal bending radius. A simple 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. Also known as press braking flanging die bending folding and edging this method is used to deform a material to an angular shape. Minimum sheet metal bend radius depends on the selection of tool and the process. Use this document to choose values that are both manufacturable and meet your needs.

The inside bend radius should be equal to the thickness of the material that you re forming. 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. Usually the preferred distance between holes and a bend is 1 5 times the sheet. So in this case the minimum inside bend radius is 2 times the material thickness.

If a piece of material is bent too tightly problems can occur. 4 0 5 2. Also spaces between pierced holes and bends should accommodate the bend radius h and be far enough from the bend. 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. Greg paulsen is director of applications engineering at xometry. 2 5 material thickness bend radius. This value will vary by grade.

If the steel has a tensile reduction value of 10 percent divide 50 by that value. Relief cuts for bends must be at least one sheet s thickness in width and be longer than the bend radius. Now multiply that answer by the plate thickness. This is done through the application of force on a workpiece.

It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii. 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.