How To Roll Sheet Metal Edges

After entering the type of material sheet thickness and bending radius the cnc machine sets itself to roll bending by adjusting the middle rolls downwards in relation to the two side rolls.

How to roll sheet metal edges.

Curling sheet metal is the process of adding a hollow circular roll to the edge of the sheet. This is because the metal is simply being bent on one plane. Just do it in increments. Grinding uses driven side rolls see figure 4.

Here i show you how to roll an edge on your armor. Rounding metal with the bevel heads from beveltools ensure a smooth and consistent rounded edge on sheet plate pipe and hole. Curls are most often used to remove a sharp untreated edge and. For sheet metal support rolls are needed near the knives or files.

The smallest bending radius is equal to the upper roll diameter. In the photos you can see that we start by folding the sheet metal over a sharp edge such as the edge of an anvil or sander stand. You can create the perfect uniform radius with these bevel heads. Figure 1 1 shows that the length of the edge before the roll a is the same as the outermost area of the roll b and as the inner most part of the roll c.

Cut a slit on one end and use that slit to bend the edge over far enough to then dolly it to the final shape. Curling is different than a tear drop hem because in a curl the edge finishes inside itself where a hem leaves the initial edge exposed. Stationary carbide knives or flat files for smoothing the edges are easy to incorporate into a low speed operation. Pinch rolls stabilize the sheet metal in the grinding zone.

It strengthens a piece where it s most vulnerable the edges and it protects the wearer from getting gouged or cut by their own armor. The curled edge provides strength to the edge and makes it safe for handling. This is how easy it is to make a rounded edge on metal. For the most part the easiest edge to roll is one on a straight line or one with a very slight outward curve.

I did something like this when i made burn barrels just skipped the slitting part. Sheet metal hems are formed using very different methods though produces features with similar uses and functionality. The deeper these rolls are set the smaller the bending radius.