YG200_YG200L_Mainte_E - 第44页

3-4 3 Periodic maintenance items 5 R e m ov e t h e F N C n o z z l e a s s e m b l y . W h i l e g r i p p i n g t h e n o z z l e a s s e m b l y , p u l l o u t t h e F N C n o z z l e s h a f t h o r i z o n t a l l …

100%1 / 87
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.
3-5
3
Periodic maintenance items
1.2.2 Cleaning the FNC nozzle assembly
1
Disassemble the FNC nozzle
assembly.
Use the Phillips screwdriver (No.0 or No.00) to
remove the nozzle mounting screws, and
remove the nozzles and springs from the FNC
nozzle assembly.
53309-F8-00
c
CAUTION
The screwdriver bit size may slightly differ between
manufacturers. Use the screwdriver that matches the
recessed pattern on the screw head.
Take care not to lose the small spring inserted in the
spring-action nozzle.
2
Clean the parts with alcohol.
Immerse the nozzles, springs, nozzle brackets,
nozzle block, bevel gear and shaft and
standard nozzles in alcohol. Leave these
parts immersed in alcohol for about 3 to 5
minutes. In the meantime, clean the nozzle
shaft hole as explained in step 3.
c
CAUTION
Do not put the O-ring of the nozzle into alcohol. The
O-ring may stretch and become unusable when
immersed in alcohol.
3
Clean the nozzle shaft hole of the
FNC assembly.
While the parts are immersed in alcohol in
step 2, clean the index holder nozzle shaft
hole of the FNC heads as follows.
1. Clean the nozzle shaft hole with a cotton
swab moistened with alcohol and blow
air with an air blow gun (KU4-M8590-00X).
2. Brush the bevel gear of the index holder
with a toothbrush moistened with alcohol
and blow air with the air blow gun
(KU4-8590-00X).
53310-F8-00
53311-F8-00
c
CAUTION
Use lint-free cotton swabs that do not leave residue.
Disassembled FNC parts
Step 1
Nozzle bracket
Nozzle block
Spring
Nozzle tip
Type 201F Type 201F
Type 202F Type 202F
Type 203F Type 203F
Step 3-1
Cleaning the index holder nozzle shaft hole
Index holder
Cotton swab moistened with alcohol
Step 3-2
Cleaning the index holder nozzle shaft hole
Clean the bevel gear using a brush
moistened with alcohol.