South Bend Tools SB1007, Руководство пользователя

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South Bend Tools
For Machines Mfd. Since 12/21 Model SB1007
-41-
O P E R A T I O N
Spider
This lathe is equipped with a set of outboard
spindle supports otherwise known as a "spider"
(see Figure 51).
Remove spider screws when not in use. Always
DISCONNECT LATHE FROM POWER when
installing, removing, or adjusting spider screws.
Accidental startup can lead to personal injury
or machine damage.
The spider is designed for supporting gun barrels
during chambering operations. However, it
is a great support option for almost any long
workpiece that extends through the outboard
side of the spindle.
The tips of the spider screws have brass wear
pads that hold the workpiece without marring it.
Tools Needed
Hex Wrench 5mm .................................................1
Hex Wrench 8mm .................................................1
Figure Figure 51. Spider components. . Spider components.
Spider Spider
Screws Screws
Spindle Speed
Using the correct spindle speed is important
for safe and satisfactory results, as well as for
maximizing tool life.
To set the spindle speed for your operation, you
will need to: 1) Determine the best spindle speed
for the cutting task, and 2) configure the lathe
controls to produce the required spindle speed.
Determining Spindle Speed
Many variables affect the optimum spindle speed
to use for any given operation, but the two most
important are the recommended cutting speed
for the workpiece material and the diameter of
the workpiece, as noted in the formula shown in
Figure 52.
Cutting Speed (FPM) x 12
*
Recommended
Dia. of Cut (in inches) x 3.14
= SpindleSpeed (RPM)
*
Double if using carbide cutting tool
Figure Figure 52. Spindle speed formula for lathes. . Spindle speed formula for lathes.
Cutting speed, typically defined in feet per
minute (FPM), is the speed at which the edge of a
tool moves across the workpiece surface.
A recommended cutting speed is the ideal speed
for cutting a type of material in order to produce
an optimum finish and maximize tool life. The
table below provides cutting speeds for a variety
of common metals, which can be used when
calculating the formula provided in Figure 52.
Figure Figure 53. Cutting speed chart originally included in . Cutting speed chart originally included in
the South Bend classic "How to Run a Lathe." the South Bend classic "How to Run a Lathe."