Sheet Metal Development Length Calculation Excel

K factor in sheet metal bending is a constant that is used to calculate sheet metal flat length.

Sheet metal development length calculation excel.

J bown. Cells on the right will output the desired values. 3243 minor chord length. Therefore using k factor there is no need to calculate sheet metal flat length manually.

Consider a sheet with a 20 mm thickness and a length of 300 mm as shown in figure 1. For example if the value of k factor for given material thickness and bending machines is known. Sheet metal flat length can be calculated using cad softwares. Sheet metal development calculator is a really simple tool for calculation of development of a sheet metal part.

Air bend force chart a chart used to calculate the tonnage required for a bend based on thickness tooling and length. 3535 major chord length. Ultimate tensile strength psi. Air bending one of the three types of bending for sheet metal where the outside mold line is not pressed against the die.

Die edge radius in. Sheet metal development calculator is a really simple tool for calculation of development of a sheet metal part. We are going to review three bending scenarios with three different bending angles. You only have to insert interior angle flange lengths k factor inside radius and material thickness.

This is used to calculate the back stop location when working off of a flat pattern. Transition patterns available flat pattern segments lobsterback bend elbow ellipsoidal dome head tee offset tee square and rectangle to round frustum cone. Dished head calculation of blank dia. Dish end calculations as per asme section vii div 1.

60 90 and 120 and we will calculate k factor bend allowance and bend deduction for them. 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. Transition patterns available flat pattern segments lobsterback bend elbow ellipsoidal dome head tee offset tee square and rectangle to round frustum cone.

Procedure is as below. Sheet metal round fitting fabrication. But the most accurate way to find out k factor is reverse engineering of a small but same sheet metal sample piece.