Bending Factor In Sheet Metal

For example if the value of k factor for given material thickness and bending machines is known.

Bending factor in sheet metal.

You ll need the k factor to find the y factor. To calculate y factor you should multiply k factor by pi and divide the result by two. Use the known k factor and the known inner bending radius to calculate the bending radius of the neutral line. Finding y factor for sheet metal bending.

I had a question on k factors for our 3 d modeling software. After bending the sheet we need to do some measurements as shown in figure 2. The k factor is the ratio of the neutral axis location t to the material thickness mt. Figure 2 illustrates the sheet that is bent with the bend angle of 90 degrees.

Calculate k factor bend allowance and y factor for sheet metal bending. Each has their own advantages. The k factor is the most important and elusive variable of bending because it varies both as a function of the material and according to parameters such as angle and tooling. It s the base value needed to calculate bend allowances and ultimately the bend deduction.

The part of the material that bends without being compressed nor elongated. The arc length of the neutral line is the length of the sheet metal you have to leave for the bend. . The k factor is defined as the ratio between the material thickness t and the neutral fibre axis t i e.

Sheet metal bending methods design tips k factor bending methods. Our design engineers typically use a factor of 0 4 for our air formed press brake parts. How k and y factors affect metal bending. We will start by calculating the bend allowance.

K and y factors make metal bending more precise without damaging the material. When you bend sheet metal the neutral axis shifts toward the inside surface of the bend. Y factor k factor x π 2. There s quite a few different bending methods available.

Then use the neutral bending radius to calculate the arc length of the neutral line circumference of circle multiplied by the bend angle as fraction of 360deg. From there we can calculate the k factor and the bend deduction. The following table is a rule of thumb. The following equation relates the k factor to the bend allowance.

K factor in sheet metal bending is a constant that is used to calculate sheet metal flat length. It s a mathematical multiplier that allows you to locate the repositioned neutral axis of the bend after forming. Sheet metal flat length can be calculated using cad softwares. When bending a workpiece it will naturally spring back a little after the load is lifted.