How To Put A Hem On Sheet Metal

When working with a brake press hems are always created in a two step process. On the ribbon click sheet metal tab create panel hem. To establish the hem bend line add the two outside dimensions up to the hem then subtract half the hem elongation allowance and a full bend deduction for the inner 90 degree bend.

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In 3 d cad a hem is very easy to create.

How to put a hem on sheet metal.

The hem tool adds a hem to your sheet metal part at a selected edge. The cad hem s angle can be adjusted past 180 degrees to create a closed teardrop or underbent to create an open hook. Create a bend with acute angle tooling in the metal 30 is preferable but 45 will work for some circumstances. In the type drop down list click one of the following.

A hem provides stiffness to a design or provides a smooth rounded external edge on a part to eliminate sharp edges. You can create single double rolled and teardrop hems. Step 10 repeat the last step again but this time try a different type of hem. To establish the inner smaller radius 90 degree bend line subtract half a bend deduction from the outside dimension of the flange.

This is putting a simple hem on a curved piece of zinc with a 7ft radius. In an open sheet metal part and in the graphics area select an edge as shown. As shown in figure 1a pick an edge or edges set a depth and decide on the gap. To bead an edge simply select that hem type in the hem feature s setup.

In sheet metal hemming means to fold the metal back on itself.