-2-2
e
c
2-2-2. T-Motor (LNC Head)
After the T-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 c of the T pulley.
(4) Remove the motor mounting screws d (2 pcs.)
and pull out the pulley to detach it.
(5) Remove the flat head screws e (2 pcs.) and
detach the TM flange.
(6) Reassemble the components in the reverse order
of disassembly.
Apply Loctite 242 to the flat head screws
e
and tighten them with a tightening torque of
0.14 N
㺃m.
Make an adjustment so that the clearance between the T pulley
c and the TM nut
plate
f becomes 0.3mm and fasten the setscrew of the T pulley.
(7) Follow the steps below to adjust the belt tension.
<Procedure>
c Make a ring using a tie-up band or belt at the top
end of the T pulley of the ș-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 Width: 4.0mm
Span: 38.2mm
Proper tension 4.5 to 12.5 N
Average measured value: 6 to 11N
Or, sum of measured values: 12 to 22N
Apply Loctite 242 to the
T-motor mounting
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
T-motor shaft and the
setscrew of the pulley. Tighten the setscrew with a torque of 0.5 Nm.
Pull
Timing belt T
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