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

2-2-3. Replacing the Z-Motor (IC Head)

After the Z-motor has been replaced, it is absolutely necessary to re-input the MS parameters
related to the Z-axis home position adjustment, Z-axis height, and laser. (For details of input
items, see section 2-8.)
1) Disconnect the motor cables from the servo
amplifier board.
2) Loosen the setscrew
3) Remove the motor mounting screws
pcs.). Detach the Z motor by pulling out the pulley.
4) Reassemble the components in the reverse order
of disassembly.
5) Follow the steps below to adjust the belt tension.
<Belt tension adjustment procedure>
With the flange part of the Z-motor kept pushed
with a force of 21.6N (2.2kgf) using the bar tension
in the direction indicated by an arrow, secure the
flange part using the mounting screws.
Tension meter set value (design value)
Weight: 0.9g/m
Proper tension
∗ Apply Loctite 242 to the Z-motor mounting screws
(3 pcs.) and tighten them with a tightening torque
of 2.3 N⋅m.
∗ When tightening the setscrew of the Z-motor
pulley, make sure to align the orientation of the flat
part of the Z-motor shaft and the setscrew of the
pulley. Tighten the setscrew with a torque of 0.5
N⋅m.
After the Z-axis motor has been assembled, obtain the PWB top surface height of the MS
parameter.
Maintenance Guide
of the Z-motor pulley.
Width: 8.0mm Span: 32mm
10.5±1N
and (3
push
When the Z-motor pulley is secured at a
position where the marking on the shaft
is located at 2-o'clock position as shown
in the figure on the left or the shaft D cut
surface is located at a position as
shown in the figure with the Z-axis
raised to its uppermost position, this
becomes the conditions for item
the next page.)
2-8
Rev. 2.0
Figure 2-2-3-1
. (on
2
1
2
3