Bend Radius For Sheet Metal Rule Of Thumb

If the die opening is 0 551 in.

Bend radius for sheet metal rule of thumb.

Note that this is just a rule of thumb. Now multiply that answer by the plate thickness. 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. When we calculate the bend allowance we find that it equals 457.

If the material is 0 5 in. 5 1 4. However it is important to know that this is just a broadly applicable rule of thumb you can follow for making bends in steel. 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.

Next subtract 1 from that answer. 2 5 material thickness bend radius. 0 972 0 16 the inside bend radius changes to 0 155. If you re bending 0 020 thick material use a 0 020 radius.

0 551 0 16 the inside bend radius changes to 0 088. Supplying 3d models without considering these factors increases the. If you have any questions or want to discuss your design contact us. Tabs must be at least 0 04 inches 1 mm from one another or the material s thickness whichever is.

The more ductile the sheet metal the smaller the inner bend radius is possible. 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. Usually the preferred distance between holes and a bend is 1 5 times the sheet thickness plus the bend radius 1 5 t h. The sheet metal design rule of thumb in this case is.

A cutout or the edge of your flange to your bend. In order to develop the flat pattern we add 457 to 1 625 and 2 625 to arrive at 4 707. 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. Minimum sheet metal bending radius.

So in this case the minimum inside bend radius is 2 times the material thickness. Minimum sheet metal bend radius depends on the selection of tool and the process. Here s a good rule of thumb for most materials. The inside bend radius should be equal to the thickness of the material that you re forming.

If the die opening is 0 972 in. Determine your minimum bend by measuring the distance from your closest feature i e. 4 0 5 2. Choose a bend radius that matches your minimum bend.