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Positioning Table
The table travels in two directions and is con-
trolled by handwheels, as illustrated in Figure 18:
•
X-axis (longitudinal)
•
Y-axis (cross)
Logitudinal (X-Axis)
or Left & Right
Figure 18. Directions of table movement.
There is a table lock handle for both the X- and
Y-axis (see Figure 19). To ensure the table does
not unexpectedly move during precision opera-
tions, use these locks to secure the table along an
axis that should not move during that operation.
X-Axis
Lock Handle
Y-Axis
Handwheel
Figure 19. Table adjustment components.
Model G8689Z (Mfd. Since 07/23)
Cross Feed
(Y-Axis) or
In & Out
X-Axis
Handwheel
Y-Axis
Lock Handle
The table handwheels have graduated dials in
0.001" increments, with one full revolution equal-
ling 0.0625" (see Figure 20). These dials provide
an easy way to gauge precise table movements
while milling.
Graduated Dial
X-Axis
Handwheel
Figure 20. X-axis handwheel graduated dial.
When you use the handwheels to change the
direction of table travel on either axis, backlash
will affect the accuracy of the graduated dial. To
account for this, move the table in the opposite
direction of your next operation, then turn the
handwheel to move the table in the intended
direction. The exact moment the leadscrew catch-
es and the table begins to move, the backlash
has been eliminated and the graduated dial can
be "zeroed."
The front of the table also has a scale indicat-
ing X-axis travel for when a tight tolerance is not
required (see Figure 21).
Indicator
Figure 21. Location of X-axis scale and
indicator.
X-Axis Scale
-21-
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