Southbend South Bend 16 SPEED GEARHEAD LATHE SB1053 - Manual (Page 45)

For Machines Mfg. Since 3/11 16-Speed Gearhead Lathe
-43-
O P E R A T I O N
Note: If necessary in the following step, refer
to Offsetting Tailstock on Page 41 for
detailed instructions.
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 ⁄
2
the distance of the amount of
taper (see Figure 54).
9. Repeat Steps 6–8 until the desired accuracy
is achieved.
Move the tailstock toward
the front of the lathe ½ the
distance of the taper.
Looking down from above.
Figure 54. Adjust tailstock toward the operator.
— If the test stock is thinner at the tailstock
end, move the tailstock toward the back of
the lathe
1 ⁄
2
the distance of the amount of
taper (see Figure 55).
Move tailstock toward the
back of the lathe ½ the
distance of the taper.
Looking down from above.
Figure 55. Adjust tailstock away from the operator.
Centers
Figure 56 shows the MT#4 dead centers
included with the lathe. In addition, an MT#6–
MT#4 tapered spindle sleeve is included for
mounting centers in the spindle.
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
Use the dead center in the spindle, where the
workpiece rotates with the center and does not
generate friction.
The carbide-tipped dead center can better
withstand the effects of friction and is best used
in the tailstock where the workpiece will rotate
against it and generate friction. The tip of the
center must be generously lubricated to avoid
premature wear and maximize smooth operation.
Using low spindle speeds will also reduce the
heat and wear from friction.
Figure 56. Adapter sleeve and dead centers.
Adapter
Sleeve
Carbide Tipped
Dead Center
Dead
Center