Figure 4-21.--Common types of bench vices.
The operation of the turret punch is simple. First,
VISE.--Vises are used for holding sheet metal
release the locking handle on the side of the punch
when it is being shaped or riveted. Figure 4-21 shows
frame, rotate the turret until the desired punch set is
the most common bench vises that are used throughout
lined up with the actuating mechanism (ram), and then
the Navy. The machinist's bench vise is the one most
lock the turret into position. Then punch the hole by
generally used for forming sheet metal. The machinist's
pulling the operating lever toward you. This actuates
bench vise is a large steel vise with rough jaws that
the ram and punch.
prevent the work from slipping. It has a swivel base,
allowing the user to position the vise in a better working
Sheet Metal Bending Equipment
position. Machinist's vises are usually bolted to a
workbench or table.
There are several types of sheet metal bending
CORNICE BRAKE.--The cornice brake is
equipment that are used to form or bend sheet metal.
designed to bend large sheets of metal. See figure 4-22.
Figure 4-22.--Cornice brake and operation.
4-12
