JUKI AMB-289, Engineer'S Manual

Page: 37 / 177

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1. To remove sensor , remove two setscrews .
2. Fix sensor with setscrew at the position where sensor is
returned to the front by 0.5 to 1 mm from the position where sensor
lights and goes off at the position where the chuck fully closes in
the state that the button is not placed in the chuck.
(Caution) The system finds no trouble because the system does
not check the sensor regardless of whether the sen-
sor is enabled or disabled in the state of chuck open-
ing.
3. To replace chuck open/close cylinder , it is necessary to remove
loader unit first. To facilitate this work, remove loader unit
beforehand.
4. To remove loader unit , remove the power cord and the sensor
cord at the position of the relay cord. (The position is in the rear of
the motor section.)
5. Loosen two setscrews and remove loader unit .
6. Loosen the setscrew to remove the X top feed guide .
7. Loosen fixing screw of presser lifter shaft , and remove presser
lifter bracket .
8. Remove four screws located on the both sides of the chuck unit,
and remove the unit.
9. Loosen nut and adjust so that the clearance between knuckle
and cylinder is 26
±
0.5 mm.
10. Supply air and adjust with the speed controller so that the motion is
not shocked largely at the time of open/close.
o When the sensor is set to ON
without holding the button, the
system recognizes that the button
is held, and proceeds to the next
operation. On the contrary, when
the sensor
is set to OFF with
holding the button, the system
recognizes that the button is not
held, and stays in the current
state.
o Do not adjust except when the
motion is shocked largely since
adjustment has been performed
at the time of delivery.
Adjustment Procedure Results of Improper Adjustment