Belt Replacement Method; Replacement Of The X And Z Axis Belts (Yp320X, Yp330X, Yp340X, Yp320Xr) - Yamaha YP-X Series Owner's Manual

4

Belt replacement method

Replace the belt if it is damaged, worn or might otherwise interfere with machine
operation.
! CAUTION
After the belt has been replaced, the origin position must be set again by
absolute reset, point data setting rechecked, and belt tension readjusted.
4-1 Replacement of the X and Z axis belts (YP320X, YP330X, YP340X,
YP320XR)
1) Turn off the controller power.
2) Remove each of the robot main unit covers.
3) Place marks(with a marker etc.) on the pulleys before replacement to limit
deviations in point data occurring due to the belt replacement. (Fig. 5-4)
4) Loosen the M6 bolts securing the metal bracket for the X and Z axis motors.
5) Remove the M8 or M5 bolts shown in Fig. 5-5 and remove the plate securing
each plate.
6) Remove the old belt and replace with the new belt.
7) Place the new belt on the pulley lining it up with the marks (for synchroniz-
ing the positions of the two pulleys) you made in step 3) above.
8) Adjust the belt tension and set the origin position again by absolute reset.
(See Chapter 4.)
9) Make corrections if any point data has deviated.
Fig. 5-4 Markings
M8 bolt
Mark
M5 bolt
Pulley
Belt
Pulley
5-9
CHAPTER 5 Installation
Metal bracket X-axis motor
Fig. 5-5 Belt replacement
Plate
M8 bolt