Southbend SB1001 - Manual (Page 29)

For Machines Mfg. Since 8/11 Model SB1001 8K ™ Lathe
-27-
O P E R A T I O N
Figure 21. Camlock is fully loosened when the cam
line is aligned with the spindle mark.
Cam line aligned with spindle mark
0
Chuck Removal
To remove the chuck:
1. DISCONNECT LATHE FROM POWER!
2. Place a sturdy piece of plywood under the
spindle to protect the bed ways during the
removal process.
3. Loosen the camlocks by turning the key
counterclockwise until each of the cam lines
are aligned with its corresponding spindle
mark (see Figure 21).
Tip: Camlocks can become very tight. A cheater
pipe may be used as a last resort to add
leverage when loosening. After loosening,
you may need to wiggle the chuck key in the
camlock to fully disengage the stud.
4. Using a dead blow hammer or other
soft mallet, lightly tap around the outer
circumference of the chuck body to loosen it
from the spindle.
5. Remove the chuck from the spindle, using
a light rocking motion to carefully slide the
studs out of the cam holes.
— If the chuck does not immediately come
off, rotate it approximately 60° and tap
it again. Make sure all the marks on the
cams and spindle are in proper alignment
for removal.
Scroll Chuck Clamping
This scroll-type chuck has an internal scroll-gear
that moves all jaws in unison when adjusted with
the chuck key. This chuck will hold cylindrical
parts on-center with the axis of spindle rotation
and can be rotated at high speeds if the
workpiece is properly clamped and balanced.
Never mix jaw types or positions to
accommodate an odd-shaped workpiece.
The chuck will spin out of balance and
may throw the workpiece! Instead, use an
independent jaw chuck or a faceplate.
Figure 22. Jaw selection and workpiece holding.
Insufficient
Jaw Clamping
Unstable
Workpiece
Bar Stock
Inside Safer
Use Jaw
Cylinder
Unsafe Jaw Position
Poor Scroll
Gear Engagement
Inside Safer
Use Jaw
Shallow
Bar Stock
Inside Unsafe
Use Jaw
Poor Scroll Gear Engagement
Unsafe Jaw Position and
Outside Safer
Use Jaw
Poor Scroll Gear Engagement
Unsafe Jaw Position and
Poor
Unstable
Workpiece
Shallow
Bar Stock
Outside Safer
Use Jaw
Grip