Maintenance 7. Arm #3
124
G3 Rev.14
(7) Loosely secure the Joint #4 motor unit to
Arm #2.
Check 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.
Joint #4
motor unit
U2 belt
U1 pulley
U1 belt
U2 pulley
(8) Secure the spline upper rotator part on the Arm #2 upper side with screws.
(9) Rotate and move up/down the ball screw spline shaft.
(10) Apply the proper tension to the U1 belt, and
secure the Joint #4 motor unit.
To do so, pass a suitable cord or string around
the Joint #4 motor unit near its mounting
plate. Then, pull the cord using a force
gauge or similar tool to apply the specified
tension shown in the figure on the right.
3-M4
×
12
+ washer
U1 belt tension = 74N (7.5
±
0.5 kgf)
Force gauge
Joint #4
motor unit
(11) Apply the proper tension to the Z belt, and
secure the Joint #3 motor unit.
To do so, pass a suitable cord or string around
the Joint #3 motor unit near its mounting
plate. Then, pull the cord using a force
gauge or similar tool to apply the specified
tension shown in the figure on the right.
3-M4
×
12 + washer
Z belt tension = 74N (7.5
±
0.5 kgf)
Force gauge
Joint #3 motor unit
(12) Connect the connectors.
Connectors: X231, X241, X31, X41
(13) Re-bundle the cables in their original positions with the wire tie removed in the
Removal step (8).
Do not allow unnecessary strain on the cables.
(14) Connect the backup connectors for Joint #3 and #4 (X63, X64) to the battery board.
Bundle the backup cable with wire tie to prevent the cable connector to fall off by
mistake.
(15) Mount the user plate and ground wire to Arm #2.
(16) Mount the battery board to the Arm #2.
(17) Install the arm top cover and the arm bottom cover.
For details,
refer to Maintenance: 3. Covers.
(18) Perform the calibration of Joint #3 and #4.
For details, refer to
Maintenance: 14. Calibration
.
Summary of Contents for G3 Series
Page 1: ...Rev 14 EM183R3623F SCARA ROBOT G3 series MANIPULATOR MANUAL ...
Page 2: ...MANIPULATOR MANUAL G3 series Rev 14 ...
Page 8: ...vi G3 Rev 14 ...
Page 14: ......
Page 84: ...Setup Operation 5 Motion Range 72 G3 Rev 14 ...
Page 86: ...74 ...
Page 200: ...Maintenance 15 Maintenance Parts List 188 G3 Rev 14 ...