Motor (Lnc Head) - JUKI KE-1070 Maintenance Manual

2-2-2.

-Motor (LNC Head)

After the -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 2-9.)
(1) Disconnect the motor cables from the servo
amplifier board.
(2) Carry out the steps (1) through (5) in section
2-1-1 to detach the ejector bracket.
(3) Loosen the set screw
(4) Remove the motor mounting screws
and pull out the pulley to detach it.
(5) Remove the flat head screws
detach the TM flange.
(6) Reassemble the components in the reverse order
of disassembly.
Apply Loctite 242 to the flat head screws
and tighten them with a tightening torque of
0.14 N m.
Make an adjustment so that the clearance between the T pulley
plate becomes 0.3mm and fasten the setscrew of the T pulley.
(7) Follow the steps below to adjust the belt tension.
<Procedure>
Make a ring using a tie-up band or belt at the top
end of the T pulley of the -motor. Hang the bar
tension on this ring. With the bar tension kept
pulled with a force of 12.7N (1.3kgf), secure the
T pulley using the mounting screws.
Tension meter set value (For check)
Weight: 0.9g/m
Span: 38.2mm
Proper tension
Average measured value: 6 to 11N
Or, sum of measured values: 12 to 22N
Apply Loctite 242 to the
screws (2 pcs.) and tighten them with a
tightening torque of 2.3 Nm.
When tightening the setscrew of the T pulley,
make sure to align the orientation of the flat part of the -motor shaft and the
setscrew of the pulley. Tighten the setscrew with a torque of 0.5 Nm.
Maintenance Guide
of the T pulley.
(2 pcs.) and
Width: 4.0mm
4.5 to 12.5 N
-motor mounting
(2 pcs.)
Timing belt T
Pull
2-7
Figure 2-2-2
and the TM nut