Replacing The Θ-Motor (Ic Head) - JUKI KE-3010 Maintenance Manual

2-2-4. Replacing the θ-Motor (IC Head)
After the θ-motor has been replaced, it is absolutely necessary to re-input the MS parameters
related to the axis home. (For details of input items, see section 2-8.)
1) Disconnect the motor cables from the servo
amplifier board.
2) Remove the mounting screws
T-motor bracket.
3) Loosen the setscrews (2 pcs.) of the IC T-pulley to
detach the pulley.
4) Remove the mounting screws
IC T-motor bracket to detach the motor.
5) Reassemble the components in the reverse order
of disassembly.
∗ Apply Loctite 242 to the mounting screws
tighten them with a tightening torque of 0.14
N⋅m.
∗ Make the adjustment so that the end face of the
motor shaft is aligned with the end face of the
pulley, and then fix the setscrews of the
T-pulley.
6) Follow the steps below to adjust the belt tension.
<Belt tension adjustment procedure>
Pull the IC T-motor bracket to adjust the tension
of the timing belt to the status shown below.
Weight: 1.0g/m Width: 6.0mm Span:
30.8mm
Proper tension
∗ When tightening the setscrew of the T pulley,
make sure to align the orientation of the flat part
of the θ-motor shaft and the setscrew of the
pulley. Tighten the setscrew with a torque of 0.5
N⋅m.
Maintenance Guide
(3 pcs.) of the IC
(3 pcs.) from the
9.0±1N
and
Pull
2-9
Rev. 2.0
Figure 2-2-4-1
IC Timing belt T