YS100_Mainte_E - 第88页

3-23 3 Periodic maintenance items 3. T wo-month inspection 3.1 Cleaning and greasing the X and Y axis T his section describes how to clean and grease the X and Y axes. See "Chapter 5 Lubrication points and schedule&…

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Periodic maintenance items

2.3 Inspecting ball screws and guides of each axis

Inspect the ball screws and the guides on the X, Y, W, and push-up axes. Checkpoints are listed below.

An anti grease splatter cover is attached to the X and Y axes. Remove these covers when inspecting the ball

screws and guides.

TIP

See "3.1 Cleaning and greasing the X and Y axis" described later on for detaching or attaching the anti grease

splatter cover.

TIP

See "3.1 Cleaning and greasing the X and Y axis", "3.2 Cleaning and greasing the push-up axis (PU axis)" and "5.2

Cleaning and lubricating the W-axis" in this chapter, and "Chapter 5 Lubrication points and schedule" for positions of

ball screws and guides of each axis.

Checkpoints

1. Any foreign objects adhering to the ball screws and guides?

Check if any fallen chips have adhered to the ball screws and/or guides.

2. Do the ball screws and 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. Check for any abnormal sounds by pressing the X-axis or Y-axis back and forth

manually.

Countermeasures

1. Ball screws and 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 referring to "3.1 Cleaning and greasing the X and Y axis", "3.2 Cleaning and greasing the push-up axis (PU

axis)", "5.2 Cleaning and lubricating the W-axis" and "Chapter 5 Lubrication points and schedule" in this chapter

described later on.

3. Contact YAMAHA sales representative when abnormal sounds occur even after trying the countermeasures in the above

steps 1 and 2.

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Periodic maintenance items

3. Two-month inspection

3.1 Cleaning and greasing the X and Y axis

This section describes how to clean and grease the X and Y axes. See "Chapter 5 Lubrication points and

schedule" for lubrication points and lubrication form. Prepare a grease gun and specified grease (NSL).

CAUTION

For information on the use of grease, read the caution items for handling in "Safety instructions" and chapter 1, "2.2.2

Lubricating tools and grease".

CAUTION

If abnormal sound is heard from the X and Y axis ball screws or guides, contact YAMAHA sales representative.

Disassembly and cleaning of the ball screws or guides by the user will void the warranty.

3.1.1 Cleaning and greasing the X and Y axis ball screws

Prepare for maintenance work.

1. Press the emergency stop button and

then open the machine safety cover.

2. If the machine is equipped with a

carriage, remove the carriage to easily

access to the X axis and Y axis

Remove the ball screw covers.

Remove the X, Y1 and Y2 axis ball screw

covers.

X-axis

1. Use a Phillips screwdriver to remove the

screws mounting the left side of the ball

screw cover.

2. Move the head unit all the way to the

left side and remove the screws

mounting the right side of the ball screw

cover.

3. Remove the ball screw cover by pulling it

to the right.

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TIP

When reattaching the X-axis ball screw cover, use the

reverse order of the above procedure.

Y1 and Y2 axes

1. Use a Phillips screwdriver to remove the

screws mounting the rear side of the ball

screw cover.

2. Move the head unit all the way to the

rear side and remove the screws

mounting the front side of the ball screw

cover.

3. Remove the ball screw cover by pulling it

to the front.

53339-L1-00

TIP

When reattaching the Y-axis ball screw covers, use the

reverse order of the above procedure.

Removing the X-axis ball screw cover

Phillips screwdriver

Step 2

X-axis ball screw cover

Removing the Y-axis ball screw cover

Y-axis ball screw cover

Step 2

Y-axis ball screw cover

mounting screw

Y-axis motor

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Periodic maintenance items

Clean the ball screws.

1. Grasp the carrying handle to move each

axis to one end.

2. Wipe away the old grease and dirt from

the ball screw with a lint-free cloth (for

clean room use).

3. Move the axes to the opposite end and

wipe the opposite side ball screw clean

(X and Y axes).

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NOTE

Carefully wipe the lead grooves of the ball screws

during the cleaning work. Additionally, make sure that

any dirt is not produced.

Apply grease to the ball screws.

X-axis, Y-axis

Use the grease gun to supply the specified

grease (NSL) to the grease nipples.

Then move the head back and forth by

hand along each axis and wipe away

excess grease.

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NOTE

The bent type nozzle is necessary for lubrication of the X

axis ball screw, and the ﬂexible type nozzle is necessary

for lubrication of the Y axis ball screw. Make sure to

attach the correct one.

Reattach the covers.

Reattach the ball screw covers in the

reverse order of the removal procedures.

Cleaning the ball screws

Step 3

X-axis ball screw

Y-axis ball screw

Greasing the ball screws

Step 4

Grease nipple

Grease gun

X-axis

Y-axis