Maintenance 10. Ball Screw Spline Unit
G10 / G20 Rev.20
205
10.2.2 Replacing the Ball Screw Spline Unit: G20
A brake is mounted on the motor of Joints #3 and #4 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 starting the replacement procedure by
following the removal steps from (1) to (3).
Ball screw
spline unit
Removal : G20
(1) Turn ON the Controller.
(2) Push down the shaft to its lower limit while pressing the brake release switch.
Be sure to keep enough space and prevent the end effector hitting any peripheral
equipment.
The brake release switch is applied to both Joints #3 and #4. When the brake
release switch is pressed, the respective brakes of the Joints #3 and #4 are released
simultaneously.
Be careful of the shaft falling and rotating while the brake release switch is being
pressed because the shaft may be lowered by the weight of an end effector.
(3) Turn OFF the Controller.
(4) Detach the wires and tubes from the end effector, and remove the end effector.
(5) This step is only for Cleanroom-model and Protected-model (C, D with bellows
option, P).
Remove the bellows.
For details, refer to
Maintenance: 9. Bellows
.
(6) Remove the arm top cover and the bottom cover.
For details, refer to
Maintenance: 3. Covers
.
(7) Cut off the wire tie banding motor cables to the Joint #3 motor and Joint #4 motor.
(8) When you use the plate of 4-point mounting,
remove the plate.
When removing the battery unit mounting bolts, be
sure to keep the connectors connected to the battery
unit.
If connectors of the battery unity are disconnected,
you need to perform calibration again.
When you use the plate of 3 mounting, loosen the
plate mounting bolts.
4-point mounting
4-M4
×
10
Plate
Battery unit
3-point mounting
Plate
Battery unit
Summary of Contents for G10 Series
Page 1: ...Rev 20 EM183R3619F SCARA ROBOT G10 G20 series MANIPULATOR MANUAL ...
Page 2: ...MANIPULATOR MANUAL G10 G20 series Rev 20 ...
Page 8: ...vi G10 G20 Rev 20 ...
Page 14: ......
Page 102: ...Setup Operation 5 Motion Range 90 G10 G20 Rev 20 ...
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