Bending Factor In Sheet Metal

It s the base value needed to calculate bend allowances and ultimately the bend deduction.

Bending factor in sheet metal.

It s a mathematical multiplier that allows you to locate the repositioned neutral axis of the bend after forming. Mathematically bend allowance during sheet metal bending can be calculated as. Of all the mathematical constants used in precision sheet metal fabrication the k factor stands out as one of the most important. Finding y factor for sheet metal bending.

Calculate k factor bend allowance and y factor for sheet metal bending. R inside bend radius. Find the material thickness mt and you ll have the information you need for calculating the k factor for sheet metal bending. Space is left between the sheet and the bottom of the v opening.

Sheet metal bending methods design tips k factor bending methods. There s quite a few different bending methods available. K value of k factor. All other values are known to the user.

The optimum width of the v opening is 6 t t stands for material thickness for sheets about 3 mm thick up to about 12 t for 12 mm thick sheets. When bending a workpiece it will naturally spring back a little after the load is lifted. 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. A bending angle.

In above bend allowance formula except sheet metal k factor and bend allowance values. Mathematically this formula looks like this. K factor 180 x ba π x complementary bend angle x mt ir mt 2. The k factor is defined as the ratio between the material thickness t and the neutral fibre axis t i e.

Each has their own advantages. The part of the material that bends without being compressed nor elongated. The bending radius must be at least 0 8 t to 2 t for sheet steel.