Epson G20 series Manipulator Manual page 219

Ball screw (1) Pass the Z belt through the shaft and mount the
spline unit
Installation : G20
(2) Secure the nut mounting screws of the ball screw
(3) Loosely secure the spline plate to Arm #2.
(4) Set the Z belt around the Z1 pulley and Z2 pulley
(5) Loosely secure the Joint #3 motor unit to Arm #2.
NOTE

(6) Place the U belt around the U1 pulley and the U2
(7) Loosely secure the Joint #3 motor unit to Arm #2.
NOTE

G10 / G20 Rev.20
ball screw spline unit to Arm #2.
spline shaft on lower side of Arm #2.
Be sure to keep the timing belt from being stuck
between the nut and Arm #2.
After moving the shaft up and down several times,
secure the spline plate to Arm #2.
so that the gear grooves of the belt are fit into those
of the pulleys completely.
Loosely secure the Joint #3 motor unit to Arm #2
so that the motor unit can be moved by hand, and it
will not tilt when pulled. If the unit is secured too
loose or too tight, the belt will not have the proper
tension.
pulley so that the gear grooves of the belt are fit
into those of the pulleys completely.
Loosely secure the Joint #3 motor unit to Arm #2
so that the motor unit can be moved by hand, and it
will not tilt when pulled. If the unit is secured too
loose or too tight, the belt will not have the proper
tension.
Maintenance 10. Ball Screw Spline Unit
3-M5×15
+ Washer
Z belt
Z2 pulley Z1 pulley
Joint #3
motor unit
U belt
U2 pulley
4-M4×15
+ Washer
Ball screw
spline unit
4-M5×15
+ Washer
U1 pulley
Joint #4
motor unit
207