SM-131-006.pdf - 第95页
Device Name Chip Mounter Block Name Page No. Unit Name Revision Model Item GXH-1 Chapter 4 Beam Section 6. Replace of Linear Scale 6.1 Replacement of X-Axis Linear Scale 6.1.1 Detachment of X-Axis Linear Scale (1) Set th…
Device
Name
Chip Mounter
Block Name
Page No.
Unit Name
Revision
Model Item GXH-1
Chapter 4 Beam Section
5. Replacement and Adjustment of Y-Axis Encoder
(3) Perform the zeroing and light intensity
adjustments of the encoder.
• Connect the adjusting jig to the encoder
as shown in Fig. D16 and turn on the
power supply to the adjusting jig.
• While viewing the liquid crystal
monitor of the jig, check the origin and
light intensity of the encoder.
How to use the adjusting jig
Origin Check: When the beam is activated and the encoder passes over the origin of
the scale, the indicator bars of the liquid crystal monitor should stay
inside "[ ]".
Light Intensity Check:
While the encoder is moving
all the way along the scale,
the indicator bar of the liquid
crystal monitor should stay in
the range "0.8 to 1.2"
• When the origin and light intensity are not
in the specified ranges, loosen the setscrews
of the encoder and move the encoder to
adjust the tilting.
(4) After the adjustment, connect the connector of the encoder and arrange the head
wiring section.
(5) Reset the machine to its original condition and turn on the power supply to the
machine.
(6) When the Y axis can be zeroed normally, adjust the offsets related to the beam. Now,
the adjustment is completed.
Refer to "6. Adjustment of Offsets" in Chapter 5 for details.
Fig. D16 Connection of Adjusting Jig
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Light Intensity Indicator
Origin Indicator Bar
Range of Origin
Fig. D17 Indicator Bars of Encode
r
Device
Name
Chip Mounter
Block Name
Page No.
Unit Name
Revision
Model ItemGXH-1
Chapter 4 Beam Section
6. Replace of Linear Scale
6.1 Replacement of X-Axis Linear Scale
6.1.1 Detachment of X-Axis Linear Scale
(1) Set the power breaker of the machine to "OFF".
(2) Detach the covers, etc., of the machine to
prepare for the work.
(3) Check the positional relation of the linear scale
mounting plate and loosen the six bolts as
shown in Fig. D21. Then, detach the plate from
the main body.
(4) Detach the linear scale fixing block as shown in
Fig. D22 and pull out the linear scale.
6.1.2 Attachment of X-Axis Linear Scale
(1) Slowly insert the linear scale into the
linear scale holder as shown in Fig. D23.
Be careful not to make nicks on the
linear scale during the insertion.
(2) Position the linear scale at its center and
fasten the linear scale fixing block
securely.
(3) Refer to the positional relation of the
checked linear scale mounting plate and
attach the plate to the original position as
shown in Fig. D24.
(4) Make the dial gauge run from Point A to
Point B as shown in Fig. D24 and adjust
the difference for 0.1 mm or less. After
that, tighten the six bolts of the plate
securely.
(5) Turn on the power supply to the machine
and zero the beam.
(6) Check the traveling distance (the distance
measured when the emitted light is not
received by the "+" limit sensor) of the X
axis through the manual axis operation.
(7) Check the traveling distance (the distance
measured when the emitted light is not
received by the "-" limit sensor) of the X axis through the manual axis operation.
Fig. D21 X-Axis Linear Scale
Linear Scale Mounting Plate
Fig. D22 Pulling out the X-Axis
Linear Scale
Linear Scale Fixing Block
Fig. D23 Inserting the X-Axis
Linear Scale
Fig. D24 Positional Check of
Linear Scale
Scale Fixing Block
Dial Gau
g
e
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Device
Name
Chip Mounter
Block Name
Page No.
Unit Name
Revision
Model ItemGXH-1
Chapter 4 Beam Section
6. Replace of Linear Scale
(8) Refer to the check results in (6) and (7) and re-adjust the position of the linear scale
based on the proportional calculation (proportioning). After that, fasten the linear
scale fixing block securely again.
When the difference in traveling distances of the X axis between the scale origin
and the right & left limit sensors is "1 mm", move the scale by 0.5 mm toward the
direction in which the scale has moved longer than the other.
(9) Adjust each offset. Now, the attachment of the scale is completed.
Refer to "6. Adjustment of Offsets" in Chapter 5 for details.
6.1.3 Attachment of X-Axis Linear Scale Holder
(1) Attach Block A to the plate as shown
in Fig. D25.
(2) Put a double-faced tape on the back
sides of both linear scale holders as
shown in Fig. D26. Make the back
sides get in touch with the positioning
pins and Block A (located at the
mounting spot for the linear scale
holder) and push the back sides strongly
against the plate.
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Positionin
g
Pin
Fig. D25 Block A
Block A
Fig. D26 Attachment of Linear Scale
Holders
Linear Scale
Holder
Linear Scale
Holder