YG200_YG200L_Mainte_E - 第43页
3-3 3 Periodic maintenance items 1 . 2 C l e a n i n g T y p e F n o z z l e s 1 . 2 . 1 R e m o v i n g t h e F N C n o z z l e a s s e m b l y 1 S e l e c t " Ty p e 2 0 2 n o z z l e " f o r t h e F N C h e …
3-2
3
Periodic maintenance items
6
Lubricate the slide section.
Using a precision screwdriver or similar tool
with a pointed tip, apply a small amount of
turbine oil (just enough so that it sinks in) to
the slide section.
53303-F8-10
7
Check the buffing action (spring
action).
Push the nozzle tip several times to repeat
the buffing action and spread turbine oil.
Use a lint-free cleaning cloth to wipe away
excess oil from around the nozzle.
53304-F8-10
8
Remove excess oil remaining in the
nozzle.
Using an air blow gun, blow air for about 5
seconds from the nozzle tip, and for about 5
seconds from the nozzle attachment side.
Repeat this process a few times to remove
excess turbine oil remaining in the nozzle.
n
NOTE
A thin coat of oil is enough to lubricate the slide section.
9
Check that the oil was removed.
If needed, blow air through the nozzle again
while placing commercially-available oil
blotting paper over the opposite end of the
nozzle, and check for residual oil in the
nozzle.
n
NOTE
Performing step 8 is usually sufficient to remove oil
remaining in the nozzle. However, if oil still remains then
blow air through the nozzle once again.
53362-F8-00
0
Reinstall the nozzle.
Reinstall the nozzle back onto the head after
checking one more time that there is no oil
remaining there.
Lubricating the slide section
Step 6
Nozzle
Precision screwdriver
(with a small amount of turbine oil applied)
Checking the spring action
Step 7
Spring action at nozzle tip
Checking for residual oil
Step 9
Oil blotting paper
Oil will appear after blowing air (first
time) for about 5 seconds from the
nozzle tip.
Repeat the air blow for about 5
seconds each from the nozzle tip
and from the attachment side.
This task is finished when oil no
longer appears.
3-3
3
Periodic maintenance items
1.2 Cleaning Type F nozzles
1.2.1 Removing the FNC nozzle assembly
1
Select "Type 202 nozzle" for the
FNC heads.
On the [Unit]-[Head] tab screen, press the
[Nozzle Change] button and select
"Type-202" for the FNC heads (Heads 2, 4
and 6).
e
2
Press the emergency stop button.
The machine must be in emergency stop to
ensure safety during work.
3
Remove the black seal (KV8-
M71RH-00X) on the bottom of the
FNC head.
A black seal is affixed to the bottom of each
FNC head (Heads 2, 4, and 6) to cover the
screws that secure the stopper block.
Remove this black seal to loosen the screws
in the next step.
53305-F8-00
4
Remove the stopper block.
1. Use the Phillips screwdriver (No.1 or No.0)
to remove the two screws securing the
stopper block to the FNC head from the
bottom.
2. Remove the stopper block by sliding it
out.
53306-F8-00
53307-F8-00
c
CAUTION
• When loosening the stopper block screws, hold the
edge of the FNC assembly so it won't rotate.
The spline belt may otherwise slip on the gear teeth.
• The screwdriver bit size may slightly differ between
manufacturers. Use the screwdriver that matches the
recessed pattern on the screw head.
FNC head (when viewed from bottom)
Step 3
Black seal for nozzle index
Removing the stopper block
Step 4-1
Phillips screwdriver
Loose the screw while
holding this edge.
Stopper block
Step 4-2
Removing the stopper block
Slide out the stopper block by pushing it with a fingertip.
3-4
3
Periodic maintenance items
5
Remove the FNC nozzle assembly.
While gripping the nozzle assembly, pull out
the FNC nozzle shaft horizontally along with
the bevel gear and remove the nozzle
assembly by pulling it down.
53308-F8-00
c
CAUTION
Do not mix up the nozzle assemblies, bevel gears and
shafts of the different heads. Keep them as the original
set for each FNC head.
Reference
When using an ultrasonic cleaner recommended by
YAMAHA:
• Attach a urethane tube to the nozzles for chip
components to protect their tip (see drawing).
• Put the nozzles in a container according to each
head and perform ultrasonic cleaning for 10 minutes
or less.
• After cleaning, blow sufficient amounts of air onto the
nozzles and then apply turbine oil (VG32) to the
spring-action parts.
• Wipe away excess oil carefully with lint-free cleaning
cloth or wipes.
53324-F8-00
Step 5
Removing the FNC nozzle assembly
Removed nozzle assembly
Bevel gear
L
Cleaning container
Alcohol
Slatted board
Water
Urethane tube used during ultrasonic cleaning
Urethane tube
Cut
Type A nozzle
Type F nozzle
Ultrasonic cleaner
Reference
ø
Nozzle chip should
not come out.