JUKI FX-1 Maintenance Manual page 33

FX-1/FX-1R Maintenance Manual
<Procedure>
Put the screw in the tap of the Z-motor and lock the mounting screw with the screw pulled in
the direction indicated by an arrow with a force of 21.6 N (2.2 kgf) using a tension gauge.
Using a tension gauge, check that the belt tension is in a proper tension range of 10.5 ±1N.
Tension gauge set values
Weight:
Width:
Span:
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.
(7) After the Z-axis motor has been assembled, obtain the PWB top surface height of the MS
parameter. If this value is not in a range of 1 to 5 mm, shift the pulley and belt running part
positions. Obtain the MS parameter again and check that the PWB top surface height is in a
range of 1 to 5 mm.
(Stroke for one rotation
of the Z-axis ball screw)
0.9 g/m
8 mm
64.5 mm
6 mm
1 to 5 mm Stable area
Pull
2-5
Timing belt Z
Z-sensor ON area
Z-sensor OFF area
Rev. 2.00