Portable turning equipment is available for
work in the field, such as chamfering the ends of
large pipe before welding. See Figure 28-34.
Many types of CNC (computer numerical
control) lathes and turning machines are used for
industrial production. With proper program-
ming, these machine tools are capable of
producing complex work with great accuracy.
Many types of CNC lathes and turning
machines are in use today. Refer to Figures 28-35
through 28-37.
Chapter 28 Other Lathe Operations 459
Figure 28-32.
This 17′ (5.1 m) vertical boring mill features high
cutting speeds and the capability of infinite speed
variations while the machine is operating.
Workpieces are mounted on the large worktable.
(Simmons Machine Tool Corp.)
Figure 28-33.
Some idea of the size of the large modern lathe can
be gained by comparing it with the machinist in
the photo.
Figure 28-34.
Portable lathes are designed to be taken into the
field. This worker is turning the end of a high-
pressure gas pipeline to prepare it for being welded.
(Tri-Tool, Inc.)
Figure 28-35.
A conventional lathe with two axis CNC control.
(Bridgeport Machines, Inc.)