Bending Factor In Sheet Metal

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.

Bending factor in sheet metal.

In above bend allowance formula except sheet metal k factor and bend allowance values. To find the k factor divide the product of 180 and ba by the difference between the product of pi mt and the complementary bend angle to the ratio of ir to mt. T sheet thickness. K value of k factor.

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. Calculate k factor bend allowance and y factor for sheet metal bending.

When bending a workpiece it will naturally spring back a little after the load is lifted. Bend allowance ba π 180 r k t a. Mathematically bend allowance during sheet metal bending can be calculated as. Mathematically this formula looks like this.

It s the base value needed to calculate bend allowances and ultimately the bend deduction. R inside bend radius. Finding y factor for sheet metal bending. There s quite a few different bending methods available.

Find the material thickness mt and you ll have the information you need for calculating the k factor for sheet metal bending. 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. The part of the material that bends without being compressed nor elongated. All other values are known to the user.

Sheet metal bending methods design tips k factor bending methods. It s a mathematical multiplier that allows you to locate the repositioned neutral axis of the bend after forming. A bending angle.