K factor in sheet metal bending is a constant that is used to calculate sheet metal flat length.
Sheet metal development length calculation online.
But the most accurate way to find out k factor is reverse engineering of a small but same sheet metal sample piece.
You only have to insert interior angle flange lengths k factor inside radius and material thickness.
So if you got k factor value now you can easily calculate bending allowance.
We are going to review three bending scenarios with three different bending angles.
You can use this sheet metal flat pattern calculator to calculate this increase in length.
As a result overall sheet length increases.
For example if the unfold length before bending is 90 mm and if the length of a outside dimension after bending is 31 08 mm and b is 61 08 mm the bend allowance is 31 08 61 08 90 2 16 mm.
Sheet metal development calculator is a really simple tool for calculation of development of a sheet metal part.
A preview of the sheet metal will be displayed once the requested parameters have been entered.
To help with that we ve got our handy weight calculator here.
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.
Transition patterns available flat pattern segments lobsterback bend elbow ellipsoidal dome head tee offset tee square and rectangle to round frustum cone.
Punch edge radius in.
There are standard charts available with sheet metal design handbook for calculating k factor ideally it should be 0 5.
With this free online tool we quickly get the sheet metal bend deduction and therefore the sheet metal blank initial flat length from the finished part measurements.
Metal gets heavy and whether you want to see how much shipping is likely to be or if your vehicle or back can handle it it s good to know what your order weighs.
60 90 and 120 and we will calculate k factor bend allowance and bend deduction for them.
Ultimate tensile strength psi.
Sheet metal flat length can be calculated using cad softwares.
Die edge radius in.
Procedure is as below.
For example if the value of k factor for given material thickness and bending machines is known.
Cells on the right will output the desired values.
When sheet metal is bend the inside bending surface is compressed.
The website for online development of sheetmetal parts and generation of dxf files of these sheetmetal parts possible without using cad software and within a very short space of time.
