JUKI FX-3R MAINTENANCE GUIDE.pdf - 第69页
FX-3R Maintenance Guide 5-16 Rev. 1.00 <Adjustment Procedure> 1) Select [Manual Control] → [Transport Control] to set the support table to a position of − 27mm. 2) Based on the lowest point of four measured points,…
FX-3R Maintenance Guide
5-15
Rev. 1.00
5-11-1. Adjusting the Gap between Torque Supporter and Support Motor
The gap between the torque supporter and support table motor must be adjusted to 1.1 mm.
5-11-2. Adjusting the Tension of the Support Table Driving Timing Belt
To adjust the tension of the support table driving timing belt, loosen the screw of the tension
supporter assembly and move the assembly in the arrow direction, input the said values to the sonic
belt tension meter (manufactured by UNITTA), measure the tension at the locations shown below,
and then adjust the tension within the required range.
• Values to be input to the sonic belt
tension meter
L specification
XL specification
Weight 2.5
Width 9.0 12.0
Span 170
• Required range: 42.5 ± 2.5N⋅m
5-11-3. Placing the Support Table Surface Horizontally
To check flatness of the support table, attach a lever dial to the head's OCC camera bracket and
measure flatness near the center of each area circled in the figure below. Adjust the height of the
table so that the difference in flatness at the four positions is within 0.02 mm.
調節ねじ
（中央）
Figure 5-11-3-1 Measurement Locations and Adjustment Screw
Adjustment screw
(center)
Figure 5-11-2-1 Belt Tension Measurement
and Adjustment Position
Measuring
position
Weaker
Stronger
Measuring
position
Figure 5-11-1-1
Motor and Torque Supporter
FX-3R Maintenance Guide
5-16
Rev. 1.00
<Adjustment Procedure>
1) Select [Manual Control] → [Transport Control] to set the support table to a position of −27mm.
2) Based on the lowest point of four measured points, turn the adjustment screw in the down
direction (screw tightening direction) to make the adjustment so that the difference among four
measured points is 0.02mm or less.
∗ If all of three screws (screws around the adjustment screws) fixing the ball screw are loosened,
the table may be lowered. To prevent such trouble, always tighten the screws temporarily after
the adjustment with the adjustment screws has been completed.
∗ After the adjustment has been completed, make sure that the center of the rail guide shaft is
aligned with that of the side beam.
(A-dimension is 4mm±1mm.)
Figure 5-11-3-2 Rail Guide Shaft and Side Beam
Side beam setscrew
FX-3R Maintenance Guide
5-17
Rev. 1.00
5-12. Replacing the Support Table ENC
1) Detach the support table in the same manner as described in 5-11, Replacing the support table
Motor.
2) Loosen the screw d, and move the tension support assembly c in the arrow direction to
loosen the tension of the timing belt
3) Loosen the screw f to detach the encoder bracket assembly e.
4) Loosen the screw supplied with the encoder (hollow set screw h) and fixing screw i to detach
the BU ENC assembly g.
5) When installing a new BU ENC, reassemble the components in the order of steps 4) to 1).
Adjust the flatness of the support table as described in 5-11 “Replacing the Support Table
Motor.”
After the components have been reassembled, obtain the support table offset from MS
parameters.
d SL6051492TN
SEMS cap bolt with washer
M5×14
c 40000937
Tension support assembly
f SL6051492TN
SEMS cap bolt with washer
M5×14
g E94337290A0
BU ENC Assembly
h SM8040802TP
Set screw M4×8
e 40000934
Encoder bracket assembly
i SL6030692TN
SEMS cap bolt with washer M3×6
Figure 5-12-2 BU ENC Assembly
Figure 5-12-1 Conveyor Base Assembly (L)