Epson SCARA ROBOT

Maintenance 7. Arm #3
G6 Rev.21 141
Joint #3 motor
Installation
(1)
Secure the pulley to the new motor shaft.
Be sure to fit the end face of the pulley to
the end
face of the motor shaft.
Tighten one of the set
screws on the flat face of
the motor shaft until the screw just
touches the
surface.
Insert a
bushing into the other set screw hole to
prevent damage to the motor shaft.
Then,
tighten
both set screws.
2-M5×6
Set screw
Joint #3 motor
M5 bushing
2-M3×4
Set screw
Brake hub
Z1 Pulley
Push
90°
0.5 ㎜
(2)
Mount the Z plate to the Joint #3 motor.
Screw : 4-M5×12
Tightening torque : 7.0 N⋅m (71.3 kgf⋅cm)
Z plate
Joint #3 motor
4-M5ｘ12
[Torque:700Ncm
(71.3 kgf⋅cm)]
(3)
Loosen the screw
s securing the pulley.
P
ush up the pulley to the brake and tighten the
screw.
PUSH
Z1 pulley
2-M5 × 6
(4)
Loosen the screw
s securing the hub.
Push
down the hub to the pulley side.
T
ighten the screws with the space 0.1 - 0.3 mm
between.
If the hub is secured with the space larger than 0.3
mm, the brake hub may interfere with the movable
plate. This may grind the movable plate and cause
metal powder.
Brake hub
2-M3×4 Set screw
PUSH
0.1
- 0.3mm
(5)
Place the Joint #3 motor unit in the arm so
that
the motor cable faces toward the
front of the arm.
Make sure that the rotor hub on the end
face of
the pulley is completely set in the
fitting on the
brake friction plate.
4-M4×12
+ Washer
Joint #3
motor unit

NOTE