Metal Spinning on the Lathe
||The lathe is one of the most versatile machine tools. When the
lathe is operating the work piece is rotating. Metal spinning was
originated by the Egyptians. In 1840 metal spinning was finally introduce
in the United States. The shaping of a material takes place when the metal
disc is forced over a piece of wood called a chuck.
This sheet contains the methods to properly spin metal in order to create
the part that is desired. For more instructions, please contact the
supervisor or refer to one of many texts available.
Related/Parts: The few related parts that
are utilized on this equipment, consist of the following:
Note: There are other parts on various accessories used with the lathe
for spinning, but for this discussion, these parts are all that are necessary
to complete this procedure.
The spinning pin
The t-bar rest
Setup Procedures (Metal Spinning): Metal
Spinning is the operation when forming a sheet of metal into certain types
of forms on the lathe. The instructions are as follows:
Procedures to Begin Metal Spinning: Now that
you are ready, follow these simple steps to begin the process involved
with metal spinning:
Prepare a work drawing design of the metal piece that is going to
be spinning on the lathe.
Prepare a hardwood chuck of the appropriate shape.
Cut a metal disc of the proper size.
Center the metal disc between the chuck and the follow block.
Note: There are several other operations that can be done using the lathe
to spin metal, however, for the purposes of these procedures, only the
previous mentioned operations are needed. For more information about
other procedures, contact your instructor and/or refer to one of the many
Start the lathe.
Select the proper cutting tool for the job.
Insert the spinning pin in the T-bar rest. Then adjust
the T-bar rest so that the tool is at a slight angle against the pin.
Apply wax lubrication, to the
outer surface of the
metal that is spinning.
Hold the tool with your right hand, placing the handle
under your arm.
Apply pressure to the metal that is spinning by moving the tool
from the center to the outer edge of the metal.
|Always put some wax lubrication on the piece of metal
that is spinning to avoid hazards.
||Hold the tool with your right hand, with the handle
your arm, to prevent hazards.
Safety practices: Due to the potential hazards
involved with the operating of this equipment, the following safety rules
must be adhered to:
Contact with the edge of the metal disc that is spinning
Entanglement (hair, clothing, jewelry, etc...) in the rotating parts
Spinning tool knock-out
Flying metal chip/pieces
Never stand directly in line with the disc.
Be sure that the metal disc does not have any defects that
could cause the metal to break when spinning.
Always wear safety glasses and leather gloves during spinning operations..
Make sure that the metal piece is securely clamped between the chuck
and follow block.
Be sure that the tail stock is locked.
Never insert the metal disc, while the lathe is running.
Wear the appropriate safety equipment.
The operating controls must be in proper working condition.
The lathe must be kept clean at all times.
When not in use, unplug the electrical cord.
Use the safety guard if possible.
Johnson, Harold V., (1973). Technical Metals. Chas. A. Bennettt
Co., Inc., Peoria, IL.
Walker, John R., (1972). Exploring Metal Working. The Goodheart-Willcox
Co., Inc., South Holland, IL.
ITT 252 - Materials Processing
Department of Technology
University of Southern Maine
Prepared by Joey Soucy, 11/14/2001