Epson RS Series, Руководство по обслуживанию

Страница: 75 / 122

RS3 RS4 Maintenance 7. Joint #3
RS series Maintenance Rev.3 65
7.2 Replacing the Timing Belt
Name Quantity Note
Maintenance
parts
Z belt (width 9 mm) 1 1510526
Tools
Hexagonal wrench (width across flats: 3 mm) 1 For M4 screw
Nippers 1 For cutting wire tie
Force gauge 1 Belt tension 75 N (7.7 kgf)
Suitable cord (Length about 800 mm) 1 For belt tension
Material
Wire tie 2
A brake is mounted on the motor of Joint #3 to prevent the shaft from moving down due to
the weight of the end effector while the power to the Controller is OFF or while the motor
is in OFF status (MOTOR OFF).
Note that the brake will not work during the replacement procedure.
Move the shaft down to its lower limit before the replacement procedure following the
removal steps.
W hen tightening hexagon socket head cap bolts, refer to the
2.4 Tightening Hexagon Socket
Head Cap Bolts.
Z belt
Removal (1) Remove the Joint #3 motor.
Follow the steps in
7.1 Replacing Joint #3 Motor - Removal (1) - (10)
.
(2) Remove the Z belt.
Remove the volts securing the spline plate.
Hold up the spline plate and pull out the Z belt
upward.
3-M4
×
12 + washer
Z belt
Spline plate
Z belt
Installation (1) Pass a new Z belt through the shaft from above, and then place it under the spline plate.
(2) Loosely secure the spline plate to Arm #2.
After moving the shaft up and down several times, secure the spline plate to Arm #2.
(3) Set the Joint #3 motor unit in the arm so that motor cable faces toward the right side
of arm.
Secure the Joint #3 motor unit and mount the cover.
Follow the steps in
7.1 Replacing Joint #3 Motor - Installation (5) - (13)
.

NOTE