JUKI KE-1070 Maintenance Manual page 69

<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 (For check)
Weight: 0.9g/m
Proper tension 10.5±1N
Apply Loctite 242 to the Z-motor mounting
screws (3 pcs.) and tighten them with a
tightening torque of 2.3 Nm.
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 Nm.
After the Z-axis motor has been assembled, obtain the PWB top surface height of the MS
parameter. If this value does not fall between 1 and 5mm, trun the Z-motor pulley 180
against the Z-axis motor shaft and secure it again. Then obtain the MS parameter again,
and check to make sure that the PWB top surface height falls between 1 and 5mm.
(Stroke for one rotation
of the Z-axis ball screw)
Maintenance Guide
Width: 8.0mm Span: 32mm
6 mm
1 to 5 mm Stable area
2-9
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
Z-sensor ON area
Z-sensor OFF area
.