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(7) Inspection, maintenance and replacement of J6-axis timing belt and brake timing belt
The reference figure at inspection, adjustment, and replacement of the timing belt is shown in
In the RV-2SDB the J6 axis has the timing belt rotating the J6 axis and the brake timing belt conveying the brake.
Also inspection, maintenance and replace the brake timing belt simultaneously.
A)Inspection, maintenance and replacement of J6-axis timing belt
<1>Motor plate fixing screw
<5> Timing pulley
(joint side)
Mark
Fig.5-11 ： Inspection, maintenance and replacement of J6 axis timing belt
■ Inspecting the J6 axis timing belt
1) Confirm that the robot controller power is OFF.
2) Refer to
Page 49, "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 approx. 2.0mm when the center of the belt is lightly
pressed with a finger (approx. 1.3N) as shown in
■ Adjusting the J6 axis timing belt
1) Carry out steps 1) and 2) indicated in
2) Lightly loosen the three
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.
Confirm that the belt tension is adjusted to slacken approx. 2.0mm when the center of the belt is lightly
pressed with a finger (approx. 1.3N).
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
ing can cause the belt to loosen with vibration.
■ Replacing the J6 axis timing belt
1) Carry out steps 1) and 2) indicated in
2) Make sure that the pulleys do not move while replacing the belt. If the pulley <4> and <5> position relation
deviates, the position could deviate.
3) Make marks on the timing belt <2> and timing pulleys <4> and <5> with a felt-tip pen as shown in
that the engagement of the timing belt <2> and timing pulleys <4> and <5> does not deviate.
4) Lightly loosen the three pc.
5) Loosen the nut fixing tension adjustment screw <3>. Loosen the tension adjustment screw <3>, and remove
the old belt.
6) Copy the marks onto the new timing belt. Make sure that both belts are tense when making the marks.
7) Align the new timing belt with the marks on the timing pulleys <4> and <5>, and install.
8) Refer to
" ■ Adjusting the J6 axis timing belt"
<3>Tension adjustment screw
With the fixing nut
<2> Timing belt
"(1)Timing belt replacement period"
" ■ Inspecting the J6 axis timing belt"
<1>. (Do not loosen too much.)
motor plate fixing screws
motor plate fixing screw
" ■ Inspecting the J6 axis timing belt"
motor plate fixing screws
and
Mark
<1>Motor plate fixing screw
cover", and remove the No. 2 arm cover L
"Fig.5-13 ： Belt
tension".
<1> certainly. (three pc.) Improper tighten -
<1>. (Do not loosen too much.)
"(8)Timing belt tension"
Maintenance and inspection procedures 5-60
5 Maintenance and Inspection
Fig.
5-11.
<4> Timing pulley
(motor side)
Note) The figure shows
RV-2SDB (all axes
have the brake).
have not occurred with
above.
above.
Fig. 5-11
to adjust the tension.
so
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