Inspection, Maintenance And Replacement Of J4-Axis Timing Belt (For Rv-13F Series) - Mitsubishi Electric RV-4FM-SE Series Instruction Manual

(5) Inspection, maintenance and replacement of J4-axis timing belt (For RV-13F series)

The reference figure at inspection, adjustment, and replacement of the timing belt is shown in
Motor plate fixing block
(Two places in the right and left)
<1>Motor plate fixing block fixing screw
Fig.5-9 ： Inspection, maintenance and replacement of J4 axis timing belt (RV-13F series)
■ Inspecting the J4 axis timing belt
1) Confirm that the robot controller power is OFF.
2) Refer to Page 82, "5.3.2 Installing/removing the
3) Visually confirm that the symptoms indicated in
the timing belt.
4) Confirm that the belt tension is adjusted to slacken as shown in
■ Adjusting the J4 axis timing belt
1) Carry out steps 1) and 2) indicated in
2) Lightly loosen the two tension adjustment screws <3>.
3) Loosens the motor plate fixing block. (Two right and left)
Remove fixing-screw <1> of the motor plate fixing block, tighten it to the screw hole for the jack ups, and
loosen the motor plate fixing block. Loosen both the right and left in the same way.
4) Turn the tension adjustment screw <3>, and adjust the tension of timing belt <2>.
When the screw is turned to the right, the belt will be stretched, and when turned to the left, will loosen.
Adjust the belt tension slack to within the range as shown in
If the belt is loosened too much when adjusting the tension causing it to come off the timing pulleys <4> and
<5>, or if the belt and pulley teeth engagement is deviated, the machine system's origin will deviate.
5) After adjustment fastens the fixing nut of tension adjustment screw <3>, and certainly fixes tension
adjustment screw <3>. Moreover, also fasten motor plate fixing block fixing screw <1> certainly. (two pc.)
Improper tightening can cause the belt to loosen with vibration.
■ Replacing the J4 axis timing belt
Carries out the replacement of the timing belt of the J4 axis by our service provider. Please contact our service
provider after confirming the robot arm and the serial number of the controller.
No.2 arm side
<2> Timing belt
Elbow side
" ■ Inspecting the J4 axis timing belt"
cover", and remove the elbow cover.
"(1)Timing belt replacement period"
"Fig.5-14 ： Belt
"Fig.5-14 ： Belt
Maintenance and inspection procedures 5-89
5 Maintenance and Inspection
Fig. 5-9.
<3>Tension adjustment screw
With the fixing nut
<4> Timing pulley
(motor side)
<5> Timing pulley
(joint side)
The screw holes for jack up
(Two places in the right and left)
J4 axis motor (Back side)
have not occurred with
tension".
above.
tension".