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4-14 4 Maintenance 5.2 Cleaning and greasing the ball screws and guides T o clean and grease the ball screws and guides of each axis, follow the steps belo w . 5.2.1 Cleaning and greasing the XT -axis ball screws n Requi…

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4
Maintenance
5. Monthly
5.1 Inspecting each axis
Inspect the ball screws and the guides on each axis.
Check the following points.
n
NOTE
A grease spattering prevention cover is attached along each axis. Remove the cover before inspection and reattach
it in place after inspection.
n
NOTE
Before beginning work, remove the rear center panel by referring to section 3.4 “Removing the rear center panel” in
this chapter so that you can open and close the rear safety door. After finishing the work, reattach the rear center
panel.
Checkpoints
1. Any foreign matter or chips adhering to the ball screws and linear guides?
2. Do the ball screws and linear guides have the correct amount of grease?
Check if grease has flowed off or splattered in the air failing to adhere. Also check if grease has discolored or
hardened.
3. Any abnormal sounds from the ball screws?
Press the emergency stop button. Then check for any abnormal sounds while pushing the unit by hand along the X-axis
or Y-axis back and forth.
Countermeasures
1. Ball screws and linear guides may be damaged when chips or debris bite into them. If chips or debris are adhering,
wipe them off along with the grease or remove with tweezers, etc.
2. Apply grease while referring to "Cleaning and greasing the ball screws and linear guides of each axis" described later.
3. Consult your YAMAHA sales office or representative when abnormal sounds occur even after trying the
countermeasures in the above steps 1 and 2.
c
CAUTION
• When handling grease or lubricant, read and follow the precautions listed in section 3.2.2, "Lubricating tools and
grease", in this chapter.
• If abnormal noise is emitted from the ball screw or guide of each axis, then contact our sales representative for
assistance. Disassembly and cleaning of the ball screw or guide by the user will void the warranty.
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Maintenance
5.2 Cleaning and greasing the ball screws and guides
To clean and grease the ball screws and guides of each axis, follow the steps below.
5.2.1 Cleaning and greasing the XT-axis ball screws
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Required tool
• Phillips screwdriver
• Lint-free paper wipe
• Grease gun
• Specified grease (NSL)
c
CAUTION
Wear protective glasses and gloves when handling grease.
e
1
Make the preparations for the
cleaning and greasing work.
1. Press the emergency stop button to put
the machine into emergency stop.
2. Open the [Unit]-[Conveyor] tab and
press the [Stopper] button to raise the
board stopper.
2
Open the front and rear safety
doors.
3
Remove the grease spattering
prevention cover.
1.
Move the conveyor table to the rear side.
2. Use the Phillips screwdriver to remove the
screws securing the grease spattering
prevention cover.
3. Remove the grease spattering prevention
cover.
53408-M6-00
4
Clean the ball screws.
Wipe away the old grease and dirt from the
entire ball screw with a paper wipe.
53409-M6-00
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CAUTION
Wipe away the old grease and dirt in the lead groove
of the ball screw. Also check that no debris or residue
remains in the lead groove.
5
Inject new grease.
Use the grease gun to inject the specified
grease (NSL) into the grease nipple (1
place).
53410-M6-00
n
NOTE
See Chapter 5, “Lubrication points”, for details on the
lubrication points and grease gun nozzles.
6
Wipe away excess grease
.
Move the conveyor table back and forth
several times by hand and wipe away
excess grease with a paper wipe.
7
Reattach the grease spattering
prevention cover.
Reattach the cover using the reverse of the
removal procedure.
Removing XT-axis grease spattering prevention cover
Grease spattering prevention cover
Step 3
Cleaning the XT-axis ball screw
Step 4
XT-axis ball screw Paper wipe
Lubricating the XT-axis ball screw
Step 5
Grease nipple
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4
Maintenance
5.2.2 Cleaning and lubricating the XT-axis guides
n
Required tools
• Phillips screwdriver
• Lent-free cleaning wipe
• Specified grease (NSL)
c
CAUTION
Wear protective glasses and gloves when handling grease.
e
1
Make the preparations for the
cleaning and greasing work.
1. Press the emergency stop button to put
the machine into emergency stop.
2. Open the [Unit]-[Conveyor] tab and
press the [Stopper] button to raise the
board stopper.
2
Open the front and rear safety
doors of the machine.
3
Clean the guides.
1. Move the conveyor table to the rear
side.
2. Move the conveyor to the left and right,
and wipe away the old grease and dirt
from the guide with a paper wipe.
3. Move the conveyor table to the front
side and wipe the guide on the front side
as well.
53411-M6-00
c
CAUTION
Also wipe clean the slide groove of each guide.
4
Inject new grease.
Use the grease gun to inject the specified
grease (NSL) into the grease nipple.
There are 3 grease nipples each for the front
and rear guides (total of 6 places).
The grease nipples on the rear guide are
located behind the grease nipple covers on
the conveyor table, so remove the covers
(two covers) with the Phillips screwdriver.
53412-M6-10
n
NOTE
See Chapter 5, “Lubrication points”, for details on the
lubrication points and grease gun nozzles.
5
Wipe away excess grease
.
Move the conveyor table back and forth
several times by hand and wipe away
excess grease with a paper wipe.
6
Reattach the grease nipple covers
for the rear guide.
Reattach the grease nipple covers (two
covers) for the rear guide that you removed
in step 4.
Cleaning the XT-axis guide (rear side)
Step 3
XT-axis guide
Paper wipe
Lubricating the XT-axis guide (rear side)
Grease nipple
Grease nipple cover
Step 4