Sheet Metal Flat Pattern Calculator

The bend allowance is the amount of the neutral axis that bends.

Sheet metal flat pattern calculator. Cells on the right will output the desired values. Should be subtracted from the flat pattern so the formed part arrives at the desired dimensions. With this free online tool we quickly get the sheet metal bend deduction and therefore the sheet metal blank initial flat length from the finished part measurements. You can use this sheet metal flat pattern calculator to calculate this increase in length.

In this article we will discuss sheetmetal bend deduction bend allowance k factor y factor and sheet metal flat pattern calculations. Sheet metal cone calculator view the cone instructions below to learn how to manually layout the flat pattern for a truncated cone in single or multiple gore sections. The flat pattern of a cone is an application that calculates the parameters for a development of a right oblique or truncated cone. For example when sheet metal of length l is bend.

For creating a cone from sheet metal or any flat material. K factor in sheet metal bending is a constant used to calculate sheet metal flat length or flat pattern. Therefore the bend allowance added to the flange lengths. The bend allowance and bend deduction are two measures that relate the bent length of a piece of sheet metal to the flat length.

Because a bend deduction can be measured in a physical part it is the most accurate way to calculate a material s stretch. Mathematically k factor value is equal to the ratio of position of neutral axis and sheet thickness. In the example above it is indicated by a dashed blue line. After bending the total length a b is larger than length l.