Bending Factor In Sheet Metal

K value of k factor.

Bending factor in sheet metal.

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. Mathematically this formula looks like this. 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.

Space is left between the sheet and the bottom of the v opening. 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. T sheet thickness.

Find the material thickness mt and you ll have the information you need for calculating the k factor for sheet metal bending. In above bend allowance formula except sheet metal k factor and bend allowance values. There s quite a few different bending methods available. It s the base value needed to calculate bend allowances and ultimately the bend deduction.

The k factor is defined as the ratio between the material thickness t and the neutral fibre axis t i e. The bending radius must be at least 0 8 t to 2 t for sheet steel. K factor 180 x ba π x complementary bend angle x mt ir mt 2. 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. Calculate k factor bend allowance and y factor for sheet metal bending. A bending angle. Sheet metal bending methods design tips k factor bending methods.

R inside bend radius. The part of the material that bends without being compressed nor elongated. Bend allowance ba π 180 r k t a.