The following illustration shows the equation calculation for determining the bend allowance when forming sheet metal.
Sheet metal radius calculator.
Alternatively you can design with.
You just have to insert the characteristics of the sheet metal to be bent.
Cells on the right will output the desired values.
Sheet metal bending parameters calculator this tool allows you to determine tonnage internal radius v die opening and minimum flange.
You only have to insert interior angle flange lengths k factor inside radius and material thickness.
When it comes to curved steel finding the precise measurements is a challenging undertaking.
A sharp bend will always be less than a minimum bend radius but a minimum bend radius does not need to be sharp.
To solve this cmrp provides easy to use measurement calculators.
It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii.
Ultimate tensile strength psi.
Then input the bend angle to get the arc length bend allowance and bend deduction.
Best way to calculate k factor in sheet metal is by reverse engineering.
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.
Value of bend deduction and flat pattern are shown in result section.
Sheet metal calculator bend allowance equations and calculator.
This calculator predicts what the minimum bend radius should be to avoid chacking or orange peeling on the outside radius of the bend.
Enter flange length internal radius and thickness values.
Use this document to choose values that are both manufacturable and meet your needs.
Enter k factor values.
Whereas the outer surface is stretched.
Here are the steps to be followed to calculate sheet metal flat length.
Keep default values in calculator as zero.
Use k factor calculator to calculate k factor values.
Most sheet metal materials will conform to the calculations.
Input material thickness and and inner radius to get the data of k factor y factor neutral layer.
This page also includes a link to a on line sheet metal bend allowance calculator.
Die edge radius in.
Here again a minimum bend radius is not necessarily the same thing as a sharp bend.
As a result overall sheet length increases.
This change in sheet length depends on the position of neutral axis or k factor.