YG200_YG200L_Mainte_E.pdf - 第54页
3-14 3 Periodic maintenance items 2 . M o n t h l y o r b i m o n t h l y i n s p e c t i o n T h i s s e c t i o n e x p l a i n s h o w t o c l e a n a n d l u b r i c a t e a n o z z l e h o l d e r a f t e r i n s p …
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Periodic maintenance items
1.3 Inspecting ball screws and linear guides of each axis
Inspect the ball screws and the linear guides on the X, Y and W axes. Check the following points.
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 head assembly or conveyor
table by hand along the X-axis or Y-axis back and forth.
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 to "2.2 Cleaning and greasing the X, Y, YT and W axis ball screws" and "2.3 Cleaning and
greasing the X, Y, YT and W axis linear guide rails" explained in chapter 3.
3. Consult your YAMAHA dealer when abnormal sounds occur even after trying the countermeasures in the above steps 1
and 2.
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Periodic maintenance items
2. Monthly or bimonthly inspection
This section explains how to clean and lubricate a nozzle holder after inspection.
2.1 Cleaning and lubricating a nozzle holder
If the nozzle holder buffing action (spring-action) is poor, this adversely affects all operations of component
pickup, recognition and mounting operations. Periodically (once every two months) clean the nozzle holder
with IPA or ethanol (hereafter alcohol) and lubricate it with turbine oil to maintain smooth movement.
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1
Press the emergency stop button.
The machine must be in emergency stop to
ensure safety during work.
2
Remove the nozzles and lower the
heads.
Remove the nozzles attached to the nozzle
holders to be cleaned, and then lower the
heads by pressing the [Head] button on the
[Unit]-[Head] tab screen.
3
Clean the nozzle holder by
immersing it in alcohol.
1. Place a cloth or paper towel under the
head.
2. Prepare a small container of about
10mm diameter deep enough to hold
the entire nozzle holder. Then pour this
container about 80% full of alcohol.
3. Bring this alcohol container up against
the nozzle shaft so the entire nozzle
holder is immersed in alcohol for several
seconds.
4. Remove the alcohol container and push
up on the nozzle holder with your finger
several times.
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4
Immerse the nozzle holder in
alcohol again.
Repeat steps 3 and 4 until the spring-action
becomes smooth.
5
Use air blow to remove foreign
matter.
Insert an air blow gun into the air joint
section and blow air while holding a
cleaning cloth or paper towel against the
lower end of the head.
6
Lubricate the slide section and
check the movement.
Apply turbine oil to the buffing section (slide
section) and push up the nozzle holder by
hand several times to check that it moves
up and down smoothly.
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7
Wipe away excess oil.
Wipe away excess oil with a lint-free
cleaning cloth or paper towel.
Cleaning the nozzle holder
Step 3
Container holding alcohol
Lubricating the nozzle holder
Step 6
Lubricate here.
Nozzle holder lubricating syringe
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Periodic maintenance items
8
Blow off excess oil remaining in the
nozzle.
As in step 5, insert the air blow gun into the
air joint section and blow air through the
spline shaft while holding a cleaning cloth or
paper towel against the lower end of the
head.
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Check that the oil was removed.
If needed, blow air through the spline shaft
again while using commercially-available oil
blotting paper, and check for residual oil in
the nozzle.
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NOTE
Performing step 8 is usually sufficient to remove residual
oil. However, if oil still remains then blow air once again.
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Reinstall the nozzle.
Reinstall the nozzle back onto the head after
checking one more time that there is no oil
remaining there.
Step 9
Checking for residual oil
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.