5.4. Replacing the timing belt

5.4. Replacing the timing belt

 

The replacement cycle of the timing belt is affected by the following items.

 

n  Continuous operation

n  Operation speed

n  Surrounding environment

 

Check periodically every 1,500 hours and check the timing belts and pulleys for any damage. If the damage is found, replacement should be performed.

 

(1)   Since the tool may fall due to gravity, prevent the possibility of the axis from falling by using a crane or releasing the brake.

(2)   Turn off the controller power. Take measures not to allow other users to turn on the power.

(3)   Remove the wrist cover.

(4)   Loosen the idler fastening bolts.

(5)   Remove the timing belt and hook the new timing belt from the secondary pulley side to the motor side pulley.

(6)   Adjust the belt tension frequency by using the idler so that it comes within the range.

(7)   Fasten the idler fastening bolt.

(8)   Repeat the steps (6) ~ (7) above until the tension meets the reference value in Table 4-4 Timing belt tension.

(9)   Assemble the wrist cover.

(10)  If the origin of the axis is out of position after the power is turned on, set the origin by referring to “6.5 Encoder zero setting”.

 

Caution   ü  Timing belts are vulnerable to oil. Please pack them individually before storing them. ü  Store the timing belts away from direct sunlight. ü  Keep the ambient temperature not too high or too low when storing them (should meet the reference conditions of using the robot). ü  Before replacing the timing belt, check the teeth of the timing belt and pulley for any damage such as scratch. ü  Do not fold the timing belt excessively.