Adjustment Procedure; Measurement Positions And Specification Values - JUKI FX-1 Maintenance Manual

FX-1/FX-1R Maintenance Manual

1-1-3. Adjustment Procedure

(1) Make measurements with a Yunitta's tension meter placed at the positions indicated by the
arrows in the figure below and check to make sure that the values are within the specification
value range.
(Note 1) Measure the belt tension by tapping the center of the belt with a stick. At this
time, put the microphone so that it receives the vibration produced at the center
of the belt in the width direction. (When receiving the vibration produced at both
ends, the measured value may become 30N larger than that obtained at the
center. Strictly observe this point.)
(Note 2) Since the tension of the X- or Y-motor belt may vary depending on the
orientation of the motor pulley, measure the tension at the position shown in
Figure 1-1-4-2.
(2) Tension meter input values
Timing belt YM

1-1-4. Measurement Positions and Specification Values

(1) Measure the belt tension at the positions shown in the figure below.
Y-belt
Figure 1-1-4-1
Belt type
TIMING BELT YM
Table 1-1-3-1
Belt unit weight
Belt type
(g/m･mm)
2.5
YB belt 3.8
X-motor belt
Rear
Y-axis
Y-belt
Front
Table 1-1-4-1
Factory default setting
YB BELT
Belt width
(mm)
40
70
Pulley set screw
position A
Measure and adjust the tension at the setscrew
position A or B.
Figure 1-1-4-2
Readjustment on market
1100 ± 50N
290 ± 50N
1-3
Belt span
(mm)
93
988
Pulley set screw
position B
800N or more
160N or more
Rev. 2.00