I just wanted to take a look at the Contour Roll command inside Inventor 2010. Of course this command will be found in the sheet metal environment, and by the way you can make some really cool shapes with it. So what is a contour flange:
A contour flange is defined using a profile sketch and a straight edge on an existing face. The profile sketch consists of lines, arcs, splines, and elliptical arcs. Contiguous geometry in the profile results in bends in the contour which honor the bend radius value of the sheet metal style. The contour flange can be offset to either side of the profile sketch.
One more important item of note since it lives in the sheet metal environment let’s not forget the automatic flat pattern that can be provided. Let’s take a look.
Created by one of the Cad Geeks
1. Choose Surfaces > Draft surfaces > Draft/flange in Flange mode.
2. Click the isoparametric curves, edges, and/or curves-on-surface, then click Go.
3. Do any of the following:
Use the manipulators to adjust the draft surface.
-click a point on one of the original curves to add another angle/depth manipulator.
-click an angle/depth manipulator to delete it.
Click one of the handles, then drag left or right to change the parameter, or type a number.