Sheet Metal Bend Radius Table

In fact the manufacturer s bending knives usually have a rounded corner of 0 3 and a small number of bending knives have a rounded corner of 0 5.

Sheet metal bend radius table.

Therefore the bending inner radius of our sheet metal parts is basically 0 2. You may choose any bend radius on this line s. First we must start with the k factor. Consider what minimum bend size you require only consider lines that meet your minimum bend requirement.

Bend radii minimum bend sizes. A section view of a typical punch and die set used to create sheet metal bends. It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii. The bend allowance formula takes into account the geometries of bending and the properties of your metal to determine the bend allowance.

We want to know the final length of the detail. Use this document to choose values that are both manufacturable and meet your needs. Being able to read a bend force chart is crucial for any brake press operator and sheet metal engineer. Another way to determine the k factor is by following the rule of thumb.

The bending angle is 90 sheet thickness 5 mm and the inside radius is 6 mm. Preferred recommended 90 degree bend radii for various sheet metals. Sheet metal bend radii. The bend radius of a sheet metal design will be based on the wall thickness of the part and the tooling that is available in house.

The bend radii listed are standard minimum if manufacturing for aircraft and aerospace applications. An air bend force chart or force chart breaks down a number of key components of sheet metal bending in an easy to reference format. If these guidelines are not followed more research and or some form of analysis may be requried. The minimum bend radius data shown in these charts is measured to the inside of the bend.

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. The material thickness will be measured in decimal form not by the gauge number. Steel american iron and steel institute. Where necessary 5052 h32 may be bent to 1t and 6061 t6 to 1 1 2t.

Refer to table s for your choice of material. To use the tables below. The data in the above table is the preferred data and is for reference only. Figure 2 shows us a typical punch and die set used to bend sheet metal.

The gauge inside radius die opening and minimum flange length are all interconnected through different equations and relationships the air bend force. Refer to the first column to choose your material thickness.