For Machines Mfg. Since 3/11
EVS Toolroom Lathe w/DRO
-57-
O P E R A T I O N
Setting Power Feed Rate
The power feed rate chart displays the settings
for the headstock feed controls for metric and
inch feed rates (see
Figure 72
).
Using the controls on the lathe, follow along with
the example below to better understand how to
set the lathe for the desired power feed rate.
Example: Power Feed Rate of 0.0025"/rev
1.
Make sure the end gears are in the standard
configuration, which is applicable for general
feed operations (refer to
End Gears
on the
Page 58
for detailed instructions).
2.
Locate the line in the feed rate chart that
lists the setting for 0.0025" of feed per
revolution of the spindle, as illustrated in
Figure 73
.
Figure 72. Power feed rate chart.
Feed Rate
Chart
Note:
In the next step, use the chuck key to rock
the spindle back and forth to help mesh the
gears as you make adjustments.
3.
For a power feed rate of 0.0025"/rev., use the
configuration string of characters to the left
of the selected feed rate (LCT7Y) to configure
the controls as follows:
L
Move the gearbox range lever on the
headstock up to the low position.
C
Point the left gearbox lever to “C”.
T
Point the middle gearbox lever to “T”.
7
Position the bottom gearbox lever in slot
“7”.
Y
Point the right gearbox lever to “Y”.
The lathe is now set up for a power feed rate of
0.0025" per spindle revolution.
When using power feed to move the cross
slide, the feed rate is
1
⁄
2
the value stated in
the feed rate chart.
Figure 73. Feed rate chart.
Feed Rate of
0.0025"/rev.
Requires a
Configuration of
LCT7Y
