But the most accurate way to find out K factor is reverse engineering of a small but same sheet metal sample piece. There are standard charts available with sheet metal design handbook for calculating K factor (ideally it should be 0.5). So, if you got K factor value now, you can easily calculate bending allowance. The formula for calculating sheet metal bending allowance is (Please refer to the above picture):īA= Bend Angle * (Π/180)* (R+ K factor* T)……Eqn.1īend Angle represents the angle to which sheet metal has bend (here it is 90 degree). If you have a sheet metal bending product (as shown in above picture) with two legs of length “X” and “ Y” and you unbend it, you will see that total length of the unbend sheet will NOT X + Y rather, the length will be X + Y + BA. Bending Allowance Calculationīending allowance is the input for calculating developed sheet metal size. Bending brake is used to bend the sheet metal piece to the required shape and angle. ![]() Developed sized sheet metal is cut out from large sheet by punching operation.Developed sheet metal size is obtained from drawing. ![]() Sheet metal bending process can be briefly jotted down as:
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |