YSM20R_YSM20WR_Mainte_E.pdf - 第75页

3-14 3 Periodic maintenance items 2.1 X-axis T his section explains the X-axis inspection, cleaning, and lubrication procedures. For details regarding lubrication points and the lubrication types, see "Chapter 5 Lub…

3-13

Periodic maintenance items

2. Monthly maintenance

This section describes the procedures for cleaning and lubricating the X-axis ball screw, guide and the Y-axis

guide and linear scale after cleaning them. The inspection items and cautions are given below.

Inspection items

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

Check if any fallen chips have adhered to the ball screw and 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. Then check for any abnormal sounds while pressing the X-axis 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 while referring “Cleaning and lubrication” described later on.

3. Contact YAMAHA sales representatives when abnormal sound is heard even after trying the countermeasures in the

above Steps 1 and 2.

Cautions

WARNING

THIS MACHINE CONTAINS PARTS GENERATING STRONG MAGNETIC FIELDS. GREAT CARE SHOULD BE TAKEN WHEN A PART

OF YOUR BODY IS PUT INSIDE THE MACHINE FOR THE MAINTENANCE WORK. CAUTIONS REGARDING FERROMAGNETIC

FIELDS ARE DESCRIBED IN THE SECTION, "SAFETY INSTRUCTIONS", AT THE BEGINNING OF THIS DOCUMENT. ALWAYS

THOROUGHLY READ THIS SECTION TO FULLY UNDERSTAND ITS CONTENTS.

CAUTION

If abnormal noise is emitted from the ball screw or linear guide of each axis ball screw or linear guide, then contact

YAMAHA sales representatives. The disassembly and cleaning of the machine made by the customer is beyond the

coverage of the warrantee.

CAUTION

When performing the cleaning and greasing work, use square cloth to prevent parts from being lost or entering the

Y-axis linear part.

CAUTION

When handling grease, read the safety precautions stated in "Safety instructions" and "2.3.2 Lubricating tools and

grease"in Chapter 1.

3-14

Periodic maintenance items

2.1 X-axis

This section explains the X-axis inspection, cleaning, and lubrication procedures. For details regarding

lubrication points and the lubrication types, see "Chapter 5 Lubrication points". The user must provide the

grease gun (standard nozzle and bent type nozzle) and the prescribed grease (NSL).

2.1.1 Cleaning and greasing X-axis ball screw

Prepare for work.

1. Take off all accessories susceptible to the

magnetic fields, such as a wristwatch

and/or magnetic ID card.

2. Press the emergency stop button and

then open the machine safety cover.

3. Detach the carriage if the machine is the

carriage type.

4. Place a square cloth on the Y-axis linear

area and the push-up plate.

Remove the grease spattering

prevention cover.

Remove the X-axis grease spatter prevention

cover.

1. Use a Phillips screwdriver to remove the

screws that secure the grease spattering

prevention cover (right side when viewed

from the head).

Loosen the screws on the left side lightly.

2. Move the head to the left and pull out

the grease spattering prevention cover

toward the right to remove it.

TIP

Reattach the X-axis grease spatter prevention cover by

reversing the above removal procedure. Attach by

pressing the end of the cover which is at motor side.

Clean the ball screws.

1. Grasp the handle and move the head

unit to one end.

2. Wipe away the old grease and dirt from

the ball screw with a lint-free cloth.

3. Move the head unit to the opposite end,

then wipe the opposite-side ball screw.

NOTE

When cleaning the ball screw, carefully clean its

groove area as well. Be sure that the cloth, etc., being

used to clean the ball screw does not produce lint, etc.

Removing the spatter prevention cover

Step 2

Grease spattering

prevention cover

Cover securing screws

53320-KMK-00

Cleaning the ball screw

Step 3

Cloth

Ball screw

53321-KMK-00

3-15

Periodic maintenance items

Apply grease.

1. As shown in the figure on the right, move

the head unit to one side manually so

that the grease nipple can be seen.

2. The grease nipple at the center of those

aligned at 3 locations is the ball screw

nipple. Use a grease gun (standard type)

to inject the prescribed grease at the

grease nipple.

NOTE

Inject until the grease begins to seep out from the gap.

Wipe off the excess grease.

1. Grasp the handle and move the head

unit to one end.

2. Wipe all excess grease from the ball

screw and nut end faces.

3. Move the head unit to the opposite end

and wipe all excess grease from the

opposite-end ball screw and nut end

faces.

Perform a warm-up.

1. Remove the square cloth.

2. Reattach the spatter prevention cover.

3. Close the machine safety cover and

cancel the emergency stop. Attach the

carriage if the machine is the carriage

type.

4. Open the "Warm-up" screen and perform

the warm-up operation for approximately

8 minutes.

Check the grease condition.

1. After stopping warming up, press the

emergency stop button and then open

the machine safety cover.

2. Remove the anti grease splatter cover.

3. Wipe the grease accumulated on the

ball screw and ball screw end surface.

4. Attach the anti grease splatter cover.

CAUTION

Repeat Steps 6 and 7 until grease accumulations no

longer occur. Beginning production with grease

accumulations present could cause the grease to

splatter.

Applying grease

Step 4

Grease nipple (center)

Grease gun (standard type)

53322-KMK-00

Wiping off the excess grease

Step 5

Excess grease

53323-KMK-00