-38-
For Machines Mfg. Since 7/09
EVS Toolroom Lathes
O P E R A T I O N
Mounting Center in Tailstock
Either a dead center or live center can be
mounted in the tailstock. Mounting instructions
are the same for both.
Figure 67
shows an
example of a dead center mounted in a tailstock.
Figure 67. Example of using a dead center installed in
the tailstock.
Dead Center
Removing Center from Spindle
To remove the sleeve and center from the
spindle, insert a piece of round bar stock or
similar tool through the outboard end (on the left
side of the headstock), then tap the sleeve loose.
Note:
Hold onto the sleeve and center as you tap
them loose to avoid dropping them and damaging
the tip of the center or the bedways.
Removing Center from Tailstock
To remove the center from the quill, hold onto it
with a rag in one hand, then rotate the tailstock
handwheel counterclockwise to draw the quill
back into the casting until the center releases.
To mount a center in the tailstock:
1.
DISCONNECT LATHE FROM POWER!
2.
Thoroughly clean and dry the tapered
mating surfaces of the tailstock quill bore
and the carbide-tipped dead center, making
sure that no lint or oil remains on the tapers.
3.
Use the tailstock quill handwheel to feed the
quill out from the casting about 1". (Do not
feed the quill out of the casting more than 2"
or stability and accuracy will be reduced.)
4.
Insert the center into the tailstock quill.
5.
Seat the center firmly into the quill during
workpiece installation by rotating the quill
handwheel clockwise to apply pressure, with
the center engaged in the center hole in the
workpiece.
Note:
Only apply enough pressure with the
tailstock quill to securely mount the
workpiece between centers. Avoid over-
tightening the center against the workpiece,
or it may become difficult to remove later,
and it will result in excessive friction and
heat, which may damage the workpiece and
the center.
