Bend Radius For Sheet Metal Rule Of Thumb

Next subtract 1 from that answer.

Bend radius for sheet metal rule of thumb. If the die opening is 0 972 in. However it is important to know that this is just a broadly applicable rule of thumb you can follow for making bends in steel. 5 1 4. 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.

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. Supplying 3d models without considering these factors increases the. Here s a good rule of thumb for most materials. The more ductile the sheet metal the smaller the inner bend radius is possible.

The sheet metal design rule of thumb in this case is. 4 0 5 2. For bends notches must be at least 3 times the material s thickness plus the bend radius. In order to develop the flat pattern we add 457 to 1 625 and 2 625 to arrive at 4 707.

If you re working with 304 stainless steel multiply its median percentage value 21 percent by the die opening. If you re bending 0 020 thick material use a 0 020 radius. Minimum sheet metal bending radius. Usually the preferred distance between holes and a bend is 1 5 times the sheet thickness plus the bend radius 1 5 t h.

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. 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. A cutout or the edge of your flange to your bend.

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

0 551 0 16 the inside bend radius changes to 0 088. Minimum sheet metal bend radius depends on the selection of tool and the process. Now multiply that answer by the plate thickness. If you have any questions or want to discuss your design contact us.

Determine your minimum bend by measuring the distance from your closest feature i e. So in this case the minimum inside bend radius is 2 times the material thickness. Note that this is just a rule of thumb. The inside bend radius should be equal to the thickness of the material that you re forming.