YSM20R_YSM20WR_Mainte_E - 第89页

3-28 3 Periodic maintenance items 6 Apply the grease to the ball scre w . Uniformly apply the specified grease (NSL) to the ball screw with finger . For portions where hand is difficult to enter , such as the head at the…

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Periodic maintenance items

3.6 FM head: Cleaning/lubricating around Z-axis ball screw

When using the FM head, it is normally necessary to clean and lubricate the ball screw, spline shaft, and guide

once every 3 months. Follow the steps below to perform the cleaning and lubrication work.

Move the head unit.

1. Take off all accessories susceptible to the

magnetic fields, such as a wristwatch

and magnetic ID card.

2. Press the emergency stop button and

then open the machine safety cover. If

the machine is carriage type, detach

carriage to easily access to the head unit.

3. Move the head unit to a convenient

position for maintenance work.

4. Place a square cloth under head unit.

Remove the air hose and the front

cover.

1. Remove screws on front cover with hex

wrench (3) holding the cover to avoid

falling.

2. Disconnect the air hose from the top and

bottom joints.

NOTE

Remove the air hose while it is attached on the front

cover.

Clean the ball screw.

Use a lint-free cloth to wipe off the dust and

dirt on the ball screw.

1. Lower the head and clean the upper

part of the ball screw as shown in the

figure on the right.

2. Raise the head and clean the lower part

of the ball screw.

NOTE

Carefully wipe the ball screw until its grooves during

cleaning work. Additionally, check that there is no dust

after cleaning.

Clean the spline shaft and guide.

In the same manner as the ball screw, wipe

off contaminants from the spline shaft and

guide with a lint-free cloth while moving the

shaft up and down.

Apply the grease to the guide.

Uniformly apply the specified grease (AFF)

with finger. For portions where hand is

difficult to enter, such as the head at the

center, apply the grease using a cotton

swab.

Removing the front cover

Step 2

Rear side of front cover

Air hose

Tube holder

Cover clamp bolt

Joint

Front cover

53336-KMK-00

Cleaning the ball screw

Step 3

Cloth

Ball screw

53337-KMK-00

Cleaning the spline shaft and guide

Step 4

Cleaning cloth

Spline shaft

Guide

53338-KMK-00

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Periodic maintenance items

Apply the grease to the ball screw.

Uniformly apply the specified grease (NSL)

to the ball screw with finger. For portions

where hand is difficult to enter, such as the

head at the center, apply the grease using

a cotton swab.

Apply the grease to the spline shaft.

Uniformly apply the specified grease (LRL) to

the spline shaft with finger.

NOTE

This grease application work uses three kinds of grease.

Perform the work while carefully checking that incorrect

grease is not applied.

Wipe off the excess grease.

Move the head up and down several times

to wipe off the excess grease of the grease

accumulation portion.

Return the head to original state.

1. Attach the air hoses.

2. Attach the front cover.

3. Remove the square cloth.

Check the air hose position.

Check that the air hoses are not crossing

and the air hose marking position is aligning

with the bottom of the tube holder.

CAUTION

If the air hose position is incorrect, the air hoses are

pulled or bent when the head is lowered. This may

damage the air hoses or parts

TIP

The air hose marking position is 80

mm from the lower

end of the hose.

Wiping off the excess grease

Step 8

Grease accumulation

53339-KMK-00

Air hose position

Step 10

Do not cross air hoses.

Make sure that air hose marking position

is aligning with bottom of tube holder.

Front cover

Incorrect attachment of air hoses (when head is lowered)

Air hose is damaged

by hitting.

Bending of air hose

53340-KMK-00

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Periodic maintenance items

3.7 PU-axis

The PU (push-up) axis is designed to prevent flexing or warping of the board during clamping and is important

because it prevents depressing of the board during component mounting.

The PU axis also prevents deviations in the component mounting accuracy due to the board depressing during

component mounting, so it is important to regularly clean and inspect the PU axis to ensure it operates

correctly.

CAUTION

If trouble occurs with the PU-axis, contact YAMAHA sales representatives. The disassembly and cleaning of the

machine made by the customer is beyond the coverage of the warrantee.

3.7.1 Cleaning and lubricating PU-axis ball screw

Prepare for work.

Take off all accessories susceptible to the

magnetic fields, such as a wristwatch and

magnetic ID card.

Change the conveyor width to

maximum width.

1. Press the [Width] button on the [Unit]

- [Conveyor] screen to display the

"Conveyor Width" screen.

2. Enter the maximum width in the "Target

Width" box and press the [OK] button.

The conveyor width is changed to the

specified width.

NOTE

The conveyor maximum width varies depending on

machine type as below.

YSM20R Dual-stage type : 490 mm

YSM20R Single-lane type : 490 mm

YSM20WR Single-lane type : 742 mm

Regarding YSM20WR Dingle-lane type, enter the

conveyor maximum width of lane 1 or lane 2 according

to the lane to be lubricated.

"Maximum width of one

lane"

YSM20WR Dual-lane type: 662 mm

Raise the push-up unit.

1. Press the [Push-up] button on the stage

to perform grease up to display the

“Conveyor Push-up” screen.

2. Enter “0.1 mm” in “Thickness” box and

press the [OK] button. The push-up unit is

raised.

Changing the conveyor width

Step 2,3

Step 3Step 2

54302-KMK-00