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G9729 Combination Lathe/Mill
-27-
Figure 20. Detail of tailstock controls.
Tailstock Controls
Figure 20 shows the locations of the tailstock
controls.
1. Tailstock Handwheel
Turning the handwheel advances or retracts the
quill in the tailstock. The graduated dial on the
handwheel is adjustable.
2. Quill Lock Lever
This lever locks the tailstock quill in place.
3. Tailstock Lock Lever
This lever locks the tailstock in place on the lathe
bed.
4. Offset Mechanism
Loosening these bolts allows the tailstock to be
offset from center by turning a screw. This fea-
ture
will allow taper turning when a workpiece is
held between centers.
1
2
3
4
3. Place a center in your tailstock.
4. Attach a lathe dog to the bar stock and
mount
it between the centers (Figure 22).
5. Turn approximately .010" off of the diam-
eter.
Figure 21. Finished
dead center.
Tailstock
The tailstock on the Model G9729 is aligned
with the headstock at the factory. However, we
recommended that you take the time to ensure
that the tailstock is aligned to your own desired
tolerances.
To
align the tailstock:
1. Center drill a 6'' long piece of round cold rolled
stock
on both ends. Set it aside for use in
Step 4.
2. Make a dead center by turning a 60° point
on
a piece of scrap material (Figure 21).
Note— As
long as it remains in the chuck, the
point of your new center will be accurate to
your spindle axis. Keep in mind the point will
have to be refinished whenever it is removed
and returned to the chuck.