![]() The bend allowance is the material added to the actual leg lengths of the part in order to develop a flat pattern. When that metal deforms, a small amount of length is added to the original part. Deductions have to be made from desired part sizes for flat patterns to results in a correct flat size. When sheet metal is bent, the metal around the bend becomes deformed and stretched. INSTRUCTIONS: Choose units and enter the following:īend Allowance (BA): The calculator returns the answer in inches (in). However this can be automatically converted to compatible units via the pull-down menu. The K- Bend Calculator found in: Bend-Tech EZ Tube Bending Software. Cells on the right will output the desired values. Print Page DiameterWith this bend allowance calculator, you will learn how to calculate. Subtract the inner radius from the resulting numeral. ![]() Divide the resultant by pi and the bend angle. K Factor in sheet metal bending is a constant used to calculate sheet metal flat length or Flat-pattern. You only have to insert interior angle, flange lengths, K factor, inside radius, and material thickness. To calculate the K-factor: Multiply the bending allowance by 180. The Bend Allowance Calculator uses the thickness of the material, bend angle, inside radius, and K factor to find the bend allowance. 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. ![]()
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