Yamaha YP-X Series User Manual download pdf (Page 52)

CHAPTER 4 Adjustment

4-6

3 Adjustment of the belt tension

Each axis of the YP-X series robots has a belt-driven structure. When this belt is

replaced or when it is stretched due to strong external forces (bumping etc.),

adjust the belt tension with the following procedure.

3-1 Adjustment of X,Y, Z axis motor belt tension

1) Turn off the controller power.

2) Remove the cover for each axis.

3) Loosen the bolts securing each motor and apply tension to the belt by pulling

on the motor. When loads as shown in the table below are applied to the

center section of the belt, a slack amount as shown in the lower part of the

table is satisfactory.

4) Retighten the bolts securing the motor and reinstall the axis covers.

Load

Slack

PulleyPulley Belt

Robot Model

YP320X

YP320XR

Load (Kg)

Slack (mm)

X-axis

0.5

Z-axis X-axis Y-axis Z-axis

YP330X

YP340X

X-axis Z-axis

YP220BX

YP220BXR

Fig. 4-2 Belt tension

CAUTION

Belt tension that is too strong will damage the motor shaft.

CAUTION

The robot position may change depending on the belt tension.

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Yamaha YP-X Series User Manual Page 52