K Factor Table Sheet Metal

K factor is a ratio that represents the location of the neutral sheet with respect to the thickness of the sheet metal part.

K factor table sheet metal.

The part of the material that bends. To change the k factor for a sheet metal part select the root node in the mechanical browser and type a value in the k factor field. In sheet metal design the k factor is used to calculate how much sheet metal one needs to leave for the bend in order to achieve particular final dimensions. The k factor is defined as the ratio between the material thickness t and the neutral fibre axis t i e.

So if the thickness of the sheet was a distance of t 1 mm and the location of the neutral axis was a distance of t 0 5 mm measured from the inside bend then you would. As i mentioned in my last post you need to do some tests to calculate these values for a specific sheet. In sheet metal the k factor is the ratio of the neutral axis to the material thickness. The k factor depends on many factors including the material the type of bending operation coining bottoming air bending etc the tools etc.

Changing the k factor for a sheet metal part. The value must lie in the range 0 1 since the neutral surface is located. K factor a constant determined by dividing the thickness of the sheet by the location of the neutral axis which is the part of sheet metal that does not change length. When a piece of metal is being formed the inner portion of the bend compresses while the outer portion expands see figure 1.

The solidworks application also comes with a k factor bend table in microsoft excel format. Calculate k factor bend allowance and y factor for sheet metal bending. For each sheet metal part you can either specify a k factor or use the default one. In my previous post i talked about k factor bend allowance and bend deduction and what they mean in sheet metal design.

The location of the neutral axis varies and. 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. Now let s see how we can obtain these values for a specific sheet. The problem with a solidworks sheet metal bend table is that it can only control the bend allowance bend deduction or k factor but the thickness and radius is still free to be changed manually.

When metal is bent the top section is going to undergo compression and the bottom section will be stretched. The line where the transition from compression to stretching occurs is called the neutral axis. When you select k factor as the bend allowance you can specify a k factor bend table. The k factor in sheet metal working is the ratio of the neutral axis to the material thickness.