Figure 12-76.--Forming a cylinder on a slip-roll forming machine.
to the rolls. The latter method of forming a cone is
of the roll. Then you may raise the released end of the
shown in figure 12-77.
top front roll and slip the cylinder off.
The grooves at the end of the rolls can be used fo
Conical shapes can be formed by setting the back
form circles out of wire or rod. They can also be used
roll to an angle before running the sheet through it. Or
to roll wired edges, as shown in figure 12-78.
they can be made with the rolls parallel, if you feed the
sheet into the machine in such a way that the element
Metal Forming Stakes
lines of the cone pass over the rear roll in a line parallel
Stakes are used to back up sheet metal for the
forming of many different curves, angles, and seams in
sheet metal. The stakes are available in a wide variety
of shapes, some of which are shown in figure 12-79.
Figure 12-78.--Rolling a wired edge.
Figure 12-77.--Rolling a conical shape.