The bend allowance added to the flange lengths is equal to the total flat length of the part.
Sheet metal bend relief calculator.
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 also have access to our team of knowledgeable engineers to optimize part designs and user friendly online resources.
Below is our simple bend allowance calculator it works by inputing the material thickness bend angle inside radius and k factor.
Cells on the right will output the desired values.
Although it is an option for calculating a bend in some cad programs such as solid works it is not often referred to in the actual manufacturing process since.
Geometry of tooling imposes a minimum bend dimension.
Swfobj src http sheetmetal me wp content uploads 2011 05 bend allowance calculator swf width 395 height 180 bend allowance formula.
Therefore the bend deduction equals the difference between the mold line lengths and the total flat length.
The diagram shows one such mechanism.
This page also includes a link to a on line sheet metal bend allowance calculator.
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.
Sheet metal calculator bend allowance equations and calculator.
The bend allowance is the amount of the neutral axis that bends.
Most sheet metal materials will conform to the calculations.
Bend allowance 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.
Refer to the chart for values for folder as well as various press brake tooling combinations.
Sheet metal bend allowance calculator determines the bend allowance amount of metal to be added to the total layout when forming sheet metal.
The bend deduction sometimes called the bend compensation describes how much the outside of the sheet has been stretched.
The following illustration shows the equation calculation for determining the bend allowance when forming sheet metal.
In the example above it is indicated by a dashed blue line.
The bend allowance describes the length of the neutral axis between the bend lines or in other words the arc length of the bend.
Note that the bend angle is the excluded angle not the included angle.
It simply processes these variables through the equations we will discuss below.
