K Factor Sheet Metal Calculator

I had a question on k factors for our 3 d modeling software.

K factor sheet metal calculator.

Since the k factor is based on the property of the metal and its thickness there is no simple way to calculate it ahead of the first bend. Typically the k factor is going to be between 0 and 5. After bending the sheet we need to do some measurements as shown in figure 2. Ultimate tensile strength psi.

Input material thickness and and inner radius to get the data of k factor y factor neutral layer. To sum up this calculator can be used to calculate sheet metal flat length. Figure 2 illustrates the sheet that is bent with the bend angle of 90 degrees. The k factor is the ratio of the neutral layer position thickness t of the sheet metal to the overall thickness of the sheet metal material t i e.

K t t why the k factor cannot exceed 0 5. From there we can calculate the k factor and the bend deduction. To figure this out the reason why the k factor can t exceed 0 5 you first need to know what the k factor is. Therefore using k factor there is no need to calculate sheet metal flat length manually.

For example if the value of k factor for given material thickness and bending machines is known. We will start by calculating the bend allowance. Our design engineers typically use a factor of 0 4 for our air formed press brake parts. The k factor then equals.

To calculate the bend allowance the k factor and the derived coefficient called the y factor insert the thickness and initial length of the sheet into the cells on the left. K factor in sheet metal bending is a constant that is used to calculate sheet metal flat length. Sheet metal flat length can be calculated using cad softwares. In order to find the k factor you will need to bend a sample piece and deduce the bend allowance.

Then input the bend angle to get the arc length bend allowance and bend deduction. Then input leg length a and b to get the flat size of the sheet. Sheet metal flat pattern is calculated using k factor. Bending angle is 90.

Die edge radius in. After bending the sheet insert the inner radius and flanges a and b. The k factor is the ratio of the neutral axis location t to the material thickness mt. When you bend sheet metal the neutral axis shifts toward the inside surface of the bend.

Definition of the k factor.