Mitsubishi RP-1AH Series, Instruction Manual

Page: 55 / 69

5 55 5Maintenance and Inspection Maintenance and Inspection Maintenance and Inspection Maintenance and Inspection
Maintenance and inspection procedures Maintenance and inspection procedures Maintenance and inspection procedures Maintenance and inspection procedures 5 55 5- -- -47 47 47 47
Fig.5-8 ： Inspecting, adjusting and replacing the timing belt in No. 2 arm Fig.5-8 ： Inspecting, adjusting and replacing the timing belt in No. 2 arm Fig.5-8 ： Inspecting, adjusting and replacing the timing belt in No. 2 arm Fig.5-8 ： Inspecting, adjusting and replacing the timing belt in No. 2 arm
■ Inspection method
■ Inspection method ■ Inspection method
■ Inspection method
1 ) Confirm that the robot controller power is OFF.
1 ) Confirm that the robot controller power is OFF. 1 ) Confirm that the robot controller power is OFF.
1 ) Confirm that the robot controller power is OFF.
2) Following "Fig. 5-3 Installing/removing the cover" on page 40, remove the No. 1 arm cover (L) and (R).
2) Following "Fig. 5-3 Installing/removing the cover" on page 40, remove the No. 1 arm cover (L) and (R). 2) Following "Fig. 5-3 Installing/removing the cover" on page 40, remove the No. 1 arm cover (L) and (R).
2) Following "Fig. 5-3 Installing/removing the cover" on page 40, remove the No. 1 arm cover (L) and (R).
3) Visually check that the symptoms listed in "( 1 ) Timing belt replacement period" on page 42 above have not
3) Visually check that the symptoms listed in "( 1 ) Timing belt replacement period" on page 42 above have not 3) Visually check that the symptoms listed in "( 1 ) Timing belt replacement period" on page 42 above have not
3) Visually check that the symptoms listed in "( 1 ) Timing belt replacement period" on page 42 above have not
occurred on the belt.
occurred on the belt. occurred on the belt.
occurred on the belt.
4) Refer to "(5) Timing belt tension" on page 48 for the belt tension, and confirm that the belt deflection is
4) Refer to "(5) Timing belt tension" on page 48 for the belt tension, and confirm that the belt deflection is 4) Refer to "(5) Timing belt tension" on page 48 for the belt tension, and confirm that the belt deflection is
4) Refer to "(5) Timing belt tension" on page 48 for the belt tension, and confirm that the belt deflection is
adequate.
adequate. adequate.
adequate.
■ Adjustment method
■ Adjustment method ■ Adjustment method
■ Adjustment method
1 ) Carry out steps 1 ) and 2) in the " ■ Inspection method" above.
1 ) Carry out steps 1 ) and 2) in the " ■ Inspection method" above. 1 ) Carry out steps 1 ) and 2) in the " ■ Inspection method" above.
1 ) Carry out steps 1 ) and 2) in the " ■ Inspection method" above.
2) Loosen the two idler screws 1 . (Do not loosen too far.)
2) Loosen the two idler screws 1 . (Do not loosen too far.) 2) Loosen the two idler screws 1 . (Do not loosen too far.)
2) Loosen the two idler screws 1 . (Do not loosen too far.)
3) While checking the timing belt 2 tension degree, move the idler 3 in the direction of the arrow in the drawing
3) While checking the timing belt 2 tension degree, move the idler 3 in the direction of the arrow in the drawing 3) While checking the timing belt 2 tension degree, move the idler 3 in the direction of the arrow in the drawing
3) While checking the timing belt 2 tension degree, move the idler 3 in the direction of the arrow in the drawing
until it is at the adequate tension position given in "(5) Timing belt tension" on page 48".
until it is at the adequate tension position given in "(5) Timing belt tension" on page 48". until it is at the adequate tension position given in "(5) Timing belt tension" on page 48".
until it is at the adequate tension position given in "(5) Timing belt tension" on page 48".
4) When moved in the direction of arrow a in the drawing, the belt will be tensed, and when moved in the
4) When moved in the direction of arrow a in the drawing, the belt will be tensed, and when moved in the 4) When moved in the direction of arrow a in the drawing, the belt will be tensed, and when moved in the
4) When moved in the direction of arrow a in the drawing, the belt will be tensed, and when moved in the
direction of arrow b, the belt will be loosened.
direction of arrow b, the belt will be loosened. direction of arrow b, the belt will be loosened.
direction of arrow b, the belt will be loosened.
5) Do not loosen the belt too much causing it to come off the timing pulleys 4 and 5, or deviate the belt and
5) Do not loosen the belt too much causing it to come off the timing pulleys 4 and 5, or deviate the belt and 5) Do not loosen the belt too much causing it to come off the timing pulleys 4 and 5, or deviate the belt and
5) Do not loosen the belt too much causing it to come off the timing pulleys 4 and 5, or deviate the belt and
pulley teeth engagement when adjusting the tension. Doing so could cause the machine system's origin to
pulley teeth engagement when adjusting the tension. Doing so could cause the machine system's origin to pulley teeth engagement when adjusting the tension. Doing so could cause the machine system's origin to
pulley teeth engagement when adjusting the tension. Doing so could cause the machine system's origin to
deviate.
deviate. deviate.
deviate.
6) After adjusting, securely tighten the two idler installation screws 1 . If the idler is improperly tightened, it
6) After adjusting, securely tighten the two idler installation screws 1 . If the idler is improperly tightened, it 6) After adjusting, securely tighten the two idler installation screws 1 . If the idler is improperly tightened, it
6) After adjusting, securely tighten the two idler installation screws 1 . If the idler is improperly tightened, it
could loosen due to vibration.
could loosen due to vibration. could loosen due to vibration.
could loosen due to vibration.
■ Replacement method
■ Replacement method ■ Replacement method
■ Replacement method
1 ) Carry out steps 1 ) and 2) in the " ■ Inspection method" above.
1 ) Carry out steps 1 ) and 2) in the " ■ Inspection method" above. 1 ) Carry out steps 1 ) and 2) in the " ■ Inspection method" above.
1 ) Carry out steps 1 ) and 2) in the " ■ Inspection method" above.
2) Loosen the two idler screws 1 .
2) Loosen the two idler screws 1 . 2) Loosen the two idler screws 1 .
2) Loosen the two idler screws 1 .
3) Remove the old belt, and install a new one. 3) Remove the old belt, and install a new one. 3) Remove the old belt, and install a new one. 3) Remove the old belt, and install a new one.
4) Adjust the tension referring to"(5) Timing belt tension" on page 48.
4) Adjust the tension referring to"(5) Timing belt tension" on page 48. 4) Adjust the tension referring to"(5) Timing belt tension" on page 48. 4) Adjust the tension referring to"(5) Timing belt tension" on page 48.
5) After replacing the belt, refer to "5.5 Resetting the origin" on page 55, and reset the origin.
5) After replacing the belt, refer to "5.5 Resetting the origin" on page 55, and reset the origin. 5) After replacing the belt, refer to "5.5 Resetting the origin" on page 55, and reset the origin. 5) After replacing the belt, refer to "5.5 Resetting the origin" on page 55, and reset the origin.
5. Timing pulley
1 . Idler installation screw
M3
×
8 (hexagon socket screw)
3. Idler
2. Timing belt (J3)
4. Timing pulley
a
b
No. 2 arm R
[Caution] [Caution] [Caution] [Caution]
This drawing shows This drawing shows This drawing shows This drawing shows
the timing belt for
the timing belt for the timing belt for the timing belt for
the J3 axis.
the J3 axis. the J3 axis. the J3 axis.
The J4 axis timing
The J4 axis timing The J4 axis timing The J4 axis timing
belt is also mounted
belt is also mounted belt is also mounted belt is also mounted
with the same
with the same with the same with the same
structure under the
structure under the structure under the structure under the
No. 2 arm L on the
No. 2 arm L on the No. 2 arm L on the No. 2 arm L on the
opposite side.
opposite side. opposite side. opposite side.