For Machines Mfg. Since 7/09
EVS Toolroom Lathes
-35-
O P E R A T I O N
9.
Use a caliper to measure both ends of the
workpiece.
— If the machined workpiece is
thicker
at the tailstock end, move the tailstock
toward
the operator
1
⁄
2
the distance of the
amount of taper (see
Figure 61
).
10.
Repeat
Steps 7–9
until the desired accuracy
is achieved.
Move the tailstock toward
the operator half the
distance of the taper.
Looking down from above.
Figure 61. Adjust tailstock toward the operator.
— If the machined workpiece is
thinner
at
the tailstock end, move the tailstock
away
from the operator
1
⁄
2
the distance of the
amount of taper (see
Figure 62
).
Move tailstock away from
the operator half the
distance of the taper.
Looking down from above.
Figure 62. Adjust tailstock away from the operator.
Note:
As long as this dead center remains in the
chuck, the point of the center will remain
true to the spindle center line. The point will
have to be refinished whenever the center is
removed and then returned to the chuck.
5.
Install a center in the tailstock.
6.
Attach a lathe dog to the piece of stock from
Step 3
, then mount it between the centers,
as shown in
Figure 60
.
Figure 60. Example of round stock mounted between
the centers.
7.
Turn 0.010" off the diameter of the stock.
8.
Mount a test or dial indicator so that the
plunger is on the tailstock quill.
Note:
If necessary in the following step, refer to
"To Set Up the Tailstock to Cut a Shallow
Taper"
on
Page 34
for adjusting the
tailstock offset.
