11
6.6.2
Z-Axis powerfeed
Refer to Figure 10:
1. Remove hand crank, clutch insert, dial, dial
nut, dial holder and bearing flange.
2. Install extension shaft by screwing it onto the
table elevating shaft.
Important:
•
Shaft end must be against inner ring of
bearing.
•
Inner
shaft
is
16 or 18 threaded UNC.
3. Tighten base to flange, then install powerfeed
and tighten it on the flange.
4. Remove protective cover from bevel gear and
install bevel gear. (
Note:
Do not install the key
yet.) Push and turn the bevel gear by hand to
check for backlash. If necessary, add a few
shims to obtain proper mesh with the drive
gear of the powerfeed unit.
Pack bevel gear with grease. Do not use
silicon-type grease. Replace gear then
push and turn to check again for backlash.
5. Remove the bevel gear. Install key, replace
gear, install dial and tighten dial nut. Add a few
shims if the dial is grinding the gear. Important:
Pack with grease before installing the bevel
gear.
6. Install clutch against bevel gear. Drill through
one hole of 5mm diameter, and drive the roll
pin into the hole.
Important:
Be sure you have followed each
step carefully and correctly before drilling
and installing the roll pin.
Temporarily install the hand crank and rotate
in clockwise direction to check for proper
shimming and to make sure there is no
binding action. Make any needed
adjustments before installing roll pin.
7. Install the spring and hand crank, and rotate
again to check for proper shimming and
smooth movement. Lubricate the opening in
the hand crank for smooth movement on the
shaft. Then tighten washer and screw at the
end of the shaft.
Figure 10
