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12-2. Backlash adjusting method of tilting axis drive spur gears (See Fig.11)
The adequate backlash of spur gear is 0.02mm
~
0.04mm. If the measured backlash is deviated, it is
necessary to adjust the backlash.
1) Drain lubrication oil from the tilting axis lubrication oil drain port (See outline drawing).
2) Slightly loosen four mounting bolts
③
which fix the motor.
3) Insert a rod
①
(approximately
φ
5, a bar wrench may also be used) in the hole located above the
motor and operate it to lower the motor position until the backlash becomes zero (0) approximately.
4) Insert a rod
②
(approximately
φ
5, a bar wrench may also be used) in the hole located below the
motor and operate it to move the motor until the backlash falls within the adequate range (0.02 mm -
0.04 mm). At this time, check the motor movement with the dial gauge attached to the motor side.
5) Tighten four mounting bolts
③
that loosened slightly.
6) After adjusting, run the motor from slow speed to high speed to check that abnormal noise does not occur.
When mounting the motor, take care so that O-ring
④
will not be
damaged.
Mounting bolt
③
O-ring
④
CAUTION
Fig.11
Round bar
①
Round bar
②
Motor