MAINTENANCE MANUAL
171
STE 85357
4)
Mount the lower stopper on the ball screw shaft. For the stopper mounting
procedure, see "4.6.5 Mounting of ball screw spline shaft".
5)
Temporarily set the axis 4 motor assembly which was disconnected in Step 2)
above to Arm 2 with the four (4) flange head bolts (M4 x 10 Loctite is not
necessary) after setting the axis 4 timing belt to the axis 4 motor pulley. Be
careful with the motor assembly mounting phase at this time.
Fig. 4.38 Mounting axis 4 motor assembly (THL800, THL900, THL1000)
6)
While pulling the axis 4 motor plate with the axis 4 tension adjustment bolts,
measure the tension with a tension meter. Tighten the flange head bolt at the
location where the tension reaches a value slightly smaller than 150 N (because
the tension gets larger by retightening of the flange head bolt). Adjust so that the
tensile value becomes between 150 and 180 N when the flange head bolt is
retightened. After that, slightly tighten the tension adjusting bolt, and fix it in
position using a hexagon nut. If the tension adjusting bolt is not tightened,
tension adjusting bolt may be disconnected during robot operation.
The values
to be used for the tension meter are as shown in the table below.
Stopper
Axis 4 motor pulley
Fasten so that the motor
lead wire faces the direction
of the arrow.
[Axis 4 motor plate mounting bolt]
Flange head bolt
M4 x 10 x 4 pcs.
Axis 4 motor assembly