Dimensioning Sheet Metal Flat Pattern

Generally capabilities of of 0 9mm 20mm in thickness are able to be manufactured from sheet 3mm or plate 3mm but this tolerance depends mainly on the part.

Dimensioning sheet metal flat pattern.

Sheet metal flat length can be calculated in the following three simple steps. The sketch and locating dimensions are retained. This can be a physical drawing or template or a computer model. When you expand the representation of a body in the cut list the body s flat pattern appears at the end of its feature list.

Value of bend deduction and flat pattern are shown in result section. Enter flange length internal radius and thickness values. When producing drawings of sheet metal components i dimension from inside the flange walls. Use k factor calculator to calculate k factor values.

Flat pattern terminology iml oml c l radius flat pattern the outline definition of the part in it s flat state before forming. And also find you fold centers more easily. My boss dimensions from outside the flange walls and thinks. The flat pattern drawing doesn t always list these factors.

Oml outside mold line the intersection of two outside surfaces of a part extended past the bend. When considering sheet metal thickness a single sheet with punches holes is a good rule of thumb. Calculate the value bend allowance for required sheet metal bend by using below formula. Keep default values in calculator as zero.

The flat pattern drawing doesn t always list these factors. Flat patterns of all bodies appear at the end of the featuremanager design tree. Here are the steps to be followed to calculate sheet metal flat length. Enter k factor values.

Multibody sheet metal parts. I think this is the better way because you can acquire your cutting length without a flat pattern by adding the inside lengths fold allowance. Bend allowance ba π 180 r k t a.