YC8_Mainte_E.pdf - 第57页
3-8 3 Periodic maintenance items 2.2.1 Cleaning and greasing the ball screw n Required tools • Square cloth • Phillips screwdriver • Hex wrench (3mm) • Lint-free cleaning cloth or paper towel • Grease gun • Specified gre…
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3
Periodic maintenance items
2.2 X, Y and W axes
Check the condition of the X, Y, and W axis ball screws and guides, as described below.
n
NOTE
A grease spattering prevention cover is attached to the X-axis and Y-axis. Before starting the inspection work, detach
this grease spattering prevention cover referring to “Detaching grease spattering prevention cover” described later
on.
Checkpoints
1. Any foreign matter adhering to the ball screws and linear guides?
Check if any fallen chips have adhered to the X and Y axis ball screws and/or X, Y and W axis 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 pressing the X-axis or Y-axis by hand.
Countermeasures
1. Ball screws and linear guides may be damaged when chips and other material bite into them. If chips are adhering,
wipe them off along with the grease or remove with tweezers, etc.
2. Apply grease while referring “Cleaning and lubrication” described later on.
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
machine made by the customer is beyond the coverage of the warrantee.
3-8
3
Periodic maintenance items
2.2.1 Cleaning and greasing the ball screw
n
Required tools
• Square cloth
• Phillips screwdriver
• Hex wrench (3mm)
• Lint-free cleaning cloth or paper towel
• Grease gun
• Specified grease: NSL
c
Always wear protective goggles and gloves when using grease.
e
1
Make the preparations for the
work.
1. Press the emergency stop button to put
the machine in the emergency stop
state.
2. Put a square cloth on the conveyor
plate.
2
Remove the grease spattering
prevention covers.
Remove the grease spattering prevention
covers on the X, Y1 and Y2 axes.
X-axis
1. Use a Phillips screwdriver to remove the
screws securing the left side of the
grease spattering prevention cover.
2. Move the head all the way to the left
side and remove the screws securing the
right side of the grease spattering
prevention cover.
3. Remove the grease spattering prevention
cover by pulling it to the right.
53307-N8-00
TIP
When reattaching the X-axis grease spattering
prevention cover, use the reverse order of the above
procedure.
Y-axes
1. Use the hex wrench to remove the bolts
securing the rear side of the grease
spattering prevention cover.
2. Move the head all the way to the rear
side and remove the bolts securing the
front side of the grease spattering
prevention cover.
3. Remove the grease spattering prevention
cover by pulling it to the front.
53308-N8-00
TIP
When reattaching the Y-axis grease spattering
prevention covers, use the reverse order of the above
procedure.
Removing the Y-axis grease spattering prevention cover
Y-axis grease spattering prevention cover
Step 2
Y-axis grease
spattering prevention
cover mounting bolt
Y-axis motor
Removing the X-axis grease spattering prevention cover
Phillips screwdriver
Step 2
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Periodic maintenance items
3
Clean the ball screws.
1. Move the head (or conveyor rails) to one
end of each axis (X, Y and W axes).
2. Wipe away the old grease and dirt from
the entire ball screw with a lint-free
cleaning cloth or paper towel.
3. Move the head (or conveyor rails) to the
opposite side of each axis (X, Y and W
axes) and wipe the ball screw.
53309-N8-00
c
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.
Cleaning the ball screws
Step 3
W-axis ball screw
Y-axis ball screw
X-axis ball screw
lint-free cleaning cloth
lint-free cleaning cloth
lint-free cleaning cloth
X-axis
Y-axis
W-axis