Bend Radius For Sheet Metal Rule Of Thumb

So in this case the minimum inside bend radius is 2 times the material thickness.

Bend radius for sheet metal rule of thumb.

If the die opening is 0 972 in. If the material is 0 5 in. 0 972 0 16 the inside bend radius changes to 0 155. 2 5 material thickness bend radius.

Tabs must be at least 0 04 inches 1 mm from one another or the material s thickness whichever is. 4 0 5 2. Minimum sheet metal bending radius. In our example below a part with flange lengths of 2 and 3 with an inside radius of 250 at 90 will have leg lengths of 1 625 and 2 625 respectively.

For bends notches must be at least 3 times the material s thickness plus the bend radius. The sheet metal design rule of thumb in this case is. The inside bend radius should be equal to the thickness of the material that you re forming. 5 1 4.

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. The more ductile the sheet metal the smaller the inner bend radius is possible. If you re working with 304 stainless steel multiply its median percentage value 21 percent by the die opening. 0 551 0 16 the inside bend radius changes to 0 088.

Supplying 3d models without considering these factors increases the. However it is important to know that this is just a broadly applicable rule of thumb you can follow for making bends in steel. Now multiply that answer by the plate thickness. When we calculate the bend allowance we find that it equals 457.

Minimum sheet metal bend radius depends on the selection of tool and the process. If the die opening is 0 551 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. Next subtract 1 from that answer.

A cutout or the edge of your flange to your bend. Note that this is just a rule of thumb. In order to develop the flat pattern we add 457 to 1 625 and 2 625 to arrive at 4 707. If you have any questions or want to discuss your design contact us.

So if the metal plate is 75 thick you would multiply 4 x 75 3 so your minimum inside bend radius would be roughly 3 times the thickness of the material in this case or 2 25. 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. Usually the preferred distance between holes and a bend is 1 5 times the sheet thickness plus the bend radius 1 5 t h. Here s a good rule of thumb for most materials.