Sheet Metal Flat Pattern Calculator

The bend allowance and bend deduction are two measures that relate the bent length of a piece of sheet metal to the flat length.

Sheet metal flat pattern calculator.

In this article we will discuss sheetmetal bend deduction bend allowance k factor y factor and sheet metal flat pattern calculations. For example when sheet metal of length l is bend. You can use this sheet metal flat pattern calculator to calculate this increase in length. The bend allowance is the amount of the neutral axis that bends.

Should be subtracted from the flat pattern so the formed part arrives at the desired dimensions. In the example above it is indicated by a dashed blue line. You only have to insert interior angle flange lengths k factor inside radius and material thickness. K factor in sheet metal bending is a constant used to calculate sheet metal flat length or flat pattern.

It allows you to determine either the size of raw material needed or the number of gore sections to fit on your available material. For creating a cone from sheet metal or any flat material. Therefore the bend allowance added to the flange lengths. The bend allowance describes the length of the neutral axis between the bend lines or in other words the arc length of the bend.

The flat pattern of a cone is an application that calculates the parameters for a development of a right oblique or truncated cone. Because a bend deduction can be measured in a physical part it is the most accurate way to calculate a material s stretch. After bending the total length a b is larger than length l. 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.