Inspection, Maintenance And Replacement Of J6-Axis Timing Belt - Mitsubishi Electric RV-4FM-SE Series Instruction Manual

5 Maintenance and Inspection

(7) Inspection, maintenance and replacement of J6-axis timing belt

The reference figure at inspection, adjustment, and replacement of the timing belt is shown in
7F series, RV-7FLL) or
RV-4F/7F series
RV-7FLL
<5> Timing pulley
(joint side)
Fig.5-12 ： Inspection, maintenance and replacement of J6 axis timing belt (RV-4F/7F series, RV-7FLL)
RV-13F/20F
Mark
<5> Timing pulley
(joint side)
Fig.5-13 ： Inspection, maintenance and replacement of J6 axis timing belt (RV-13F/20F)
■ Inspecting the J6 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 J6 axis timing belt
1) Carry out steps 1) and 2) indicated in
2) Lightly loosen the two motor plate fixing screws <1>. (Do not loosen too much.)
3) The nut which is fixing tension adjustment screw <3> is loosened, turn 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.
4) After adjustment fastens the fixing nut of tension adjustment screw <3>, and certainly fixes tension
adjustment screw <3>.Moreover, also fasten motor plate fixing screw <1> certainly. (two pc.) Improper tight -
ening can cause the belt to loosen with vibration.
Maintenance and inspection procedures
5-92
Fig. 5-13 (RV-13F/20F).
<2> Timing belt
Mark
<3>Tension adjustment screw
With the fixing nut
<2> Timing belt
<1>Motor plate fixing screw
" ■ Inspecting the J6 axis timing belt"
Mark
<1>Motor plate fixing screw
Mark
<4> Timing pulley
(motor side)
cover", and remove the No. 2 arm cover R
"(1)Timing belt replacement period"
"Fig.5-14 ： Belt
"Fig.5-14 ： Belt
Fig. 5-12 (RV-4F/
<4> Timing pulley
(motor side)
<3>Tension adjustment screw
With the fixing nut
have not occurred with
tension".
above.
tension".