Sherline 5000 Mill Assembly Instructions

-9-
INDUSTRIAL APPLICATIONS FOR SHERLINE COMPONENTS
For many years, Sherline spindles, slides and motor units
have been especially popular with designers of custom tooling
for small industrial applications because of the low cost
and the large number of Sherline accessories that fit the
spindle. In fact, we use them in our own production facility
for a number of operations. Sherline is now offering a
complete line of components made specifically for the
production tooling designer. As you would expect, the size
range is best suited for smaller operations, but if your needs
fit within the specifications of Sherline components, excellent
design results can be achieved. For more information on
products from Sherline’s Industrial Products Division, see
our web site at
www.sherlineIPD.com.
ALIGNMENT KEY
HEADSTOCK ASSEMBLY
PIVOT PIN
HEADSTOCK LOCKING SCREW
FIGURE 9—
Headstock and
alignment key
in position over
lathe
FIGURE 7—A typical
Sherline industrial slide based
on components from the tool line.
MOUNTING THE HEADSTOCK TO THE LATHE OR MILL
You may notice that the post onto which the headstock
mounts is a loose fit where it projects from the lathe bed
or column saddle. This is normal, and the diagram in Figure
8 will help you understand how it works.
The screw in the front center of the headstock has a cone
point. The pivot pin has a tapered slot with a corresponding
angle. When the screw is tightened, its angled face engages
the groove, and, because the pivot pin can not come up, it
draws the headstock down into position, clamping it into
place. If the pin were rigid, it could keep the headstock
from pulling down squarely.
The headstock is aligned with the lathe bed or column
saddle by means of a precision ground key that fits into
keyways in both parts. It is not square in cross section so it
will fit in only one direction. Push the headstock firmly
against it as you tighten the hold-down screw. The mill
column saddle has two keyways milled into it so the
headstock can be mounted in conventional fashion or at a
90° angle for horizontal milling.
FIGURE 8—A cross-section of the headstock showing
the pointed locking screw
ALIGNMENT KEY
HEADSTOCK CASE
HEADSTOCK PIVOT PIN
HEADSTOCK LOCKING SCREW
LATHE BED
LATHE BASE
CAUTION! Always make sure the key, slot and mating
surfaces are free from dirt and chips before locking down
the headstock.
OPERATION OF THE MOTOR AND
ELECTRONIC SPEED CONTROL
The lathe is supplied with an electronic speed control that
produces a comprehensive range of speeds suitable for all
operations. Special circuitry designed into the DC motor
speed control automatically compensates for speed changes
due to increased load. If the spindle RPM drops noticeably
when cutting, you are taking too heavy a cut. The speed
range of the spindle using the speed control is from 70 to
2800 RPM. This is achieved without the inconvenience of
changing belt positions or gear ratios as is often the case
with other designs. A second belt position is offered as an
additional feature to provide extra torque at low RPM for
larger diameter parts should your job require it.
To operate the motor, turn the speed control knob
counterclockwise as far as it will go. Then turn the toggle
switch to “ON” and select the speed by turning the speed
control knob clockwise.
Motors are Pre-tested at the Factory
Your new motor should run smoothly the first time you use
it, as it has been “run in” for about an hour before being
shipped to you. Despite our secure packaging, there have
been cases where extremely rough handling by a shipper
has damaged the magnets in the motor. If the motor does
not run when plugged in, turn the motor by hand. If it does
not turn smoothly, it may have been damaged in shipment.
Call Sherline for instructions on making a damage claim
with the shipper. Do not attempt to repair the motor
yourself.
HIGH SPEED SPINDLE OPERATION
A special pulley set is available that turns the spindle at up
to its maximum rated capacity of 10,000 RPM. See P/N 4335.