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8.
Use calipers to measure both ends of the
workpiece.
— if the test stock is thicker at the tailstock
end, move the tailstock toward the front of
the lathe
1
⁄
the distance of the amount of
2
taper, as shown in the figure below.
Move tailstock toward
front of lathe
Looking down from above.
figure 53. adjust tailstock toward the operator.
— if the test stock is thinner at the tailstock
end, move the tailstock toward the back of
the lathe
⁄
the distance of the amount of
1
2
taper, as shown in the figure below.
Looking down from above.
figure 54. adjust tailstock away from the
operator.
9.
repeat Steps 6–8 until the desired accuracy
is achieved.
Model G0746/G0749 (Mfg. Since 3/13)
/
the
1
2
amount of taper.
Move tailstock toward
back of lathe
/
the
1
2
amount of taper.
centers
figure 55 shows the Mt#5 dead centers included
with the lathe. in addition, an Mt#7–Mt#5 tapered
spindle sleeve is included for mounting in the
spindle.
figure 55. adapter sleeve and dead centers.
Dead centers
a dead center is a one-piece center that does not
rotate with the workpiece and is used to support
long, slender workpieces in the tailstock.
a carbide-tipped dead center (not included) can
better withstand the effects of friction than a typi-
cal dead center and is best used in the tailstock
where the workpiece will rotate against it. the tip
of a dead center must be generously lubricated
during the operation to avoid premature wear and
maximize smooth operation. Using low spindle
speeds will also reduce the heat and wear from
friction.
Use the dead center in the spindle for operations
where the workpiece rotates with the center and
does not generate friction.
spindle
sleeve
dead
Centers
-43-
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