Bending Factor In Sheet Metal

There s quite a few different bending methods available.

Bending factor in sheet metal.

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. Find the material thickness mt and you ll have the information you need for calculating the k factor for sheet metal bending. Sheet metal bending methods design tips k factor bending methods. K value of k factor.

Each has their own advantages. Bend allowance ba π 180 r k t a. Finding y factor for sheet metal bending. Mathematically bend allowance during sheet metal bending can be calculated as.

A bending angle. 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. Calculate k factor bend allowance and y factor for sheet metal bending. All other values are known to the user.

Space is left between the sheet and the bottom of the v opening. In above bend allowance formula except sheet metal k factor and bend allowance values. The k factor is defined as the ratio between the material thickness t and the neutral fibre axis t i e. Mathematically this formula looks like this.

The part of the material that bends without being compressed nor elongated. T sheet thickness. Of all the mathematical constants used in precision sheet metal fabrication the k factor stands out as one of the most important. When bending a workpiece it will naturally spring back a little after the load is lifted.

The bending radius must be at least 0 8 t to 2 t for sheet steel. It s a mathematical multiplier that allows you to locate the repositioned neutral axis of the bend after forming. 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.