Patent ID: 6928847

Claim:
A roll forming system, comprising: a first roll including: a main roll section having a main roll surface for pressing a main strip section of a strip, and a side roll section raised from the main roll surface of the first roll and having a side roll surface or forming a flange in the strip; and a second roll defining a first axial location and a second axial location, including: a main roll section having a main roll surface for compressing the main strip section of the strip between the main roll surfaces of the first and second rolls, a side roll section depressed below the main roll surface of the second roll and having a first side roll surface, and an annular groove formed axially between the main roll section of the second roll and the side roll section of the second roll, wherein the side roll section of the second roll forms the flange in the strip with the side roll surface of the first roll if the first roll has the side roll section at the first axial location confronting the first side roll surface of the side roll section of the second roll, and wherein the annular groove of the second roll forms the flange in the strip with the side roll surface of the first roll if the first roll has the side roll section at the second axial location for fitting the annular groove of the second roll, wherein the first roll is selected from a group of rolls, and wherein the second roll is a common roll, the side roll section of the first roll selectively cooperating with the side roll section of the second roll or with the annular groove of the second roll, or forming the flange in the strip.