# Outside bend radius calculator sheet metal

Bend features can join sheet metal faces that do not touch. When you select edges on sheet metal features, you add material to the model using the bend radius and material thickness defined by the sheet metal style. Faces extend in compliance with your default (or selected) bend radius.

sheet metal bend allowance calculator - formula & step by step calculation to find the flat pattern length when a bend is dimensioned either from the centre of radius or a tangent point of radius or the outside tangent point of the radius on an acute angle bend. The bend allowance added to the flange lengths is equal to the total flat length of the part. The bend deduction, sometimes called the bend compensation, describes how much the outside of the sheet has been stretched. Therefore, the bend deduction equals the difference between the mold line lengths and the total flat length.

BEND ALLOWANCE BEND RADIUS If in doubt, make a test piece. Often bend allowances are calculated for a sheet metal part and used to make costly tooling or production parts that require a lot of labor to produce. A scrap tool or production run can be very costly, much more so that a test piece. So if you are ever The dimension α is called the bend allowance. To find α, calculate the difference between the unfold length before machining and the outside dimension after machining (a + b). For example, if the unfold length before bending is 90 mm, and if the length of a (outside dimension) after bending is 31.08 mm and b is 61.08 mm, the bend

K-Factor in sheet metal bending is a constant. It is used to calculate sheet metal flat length/ Flat-pattern. Mathematically k factor value is equal to the ratio of position of neutral axis and sheet thickness. The dimension α is called the bend allowance. To find α, calculate the difference between the unfold length before machining and the outside dimension after machining (a + b). For example, if the unfold length before bending is 90 mm, and if the length of a (outside dimension) after bending is 31.08 mm and b is 61.08 mm, the bend