Yamaha 4-axis model User Manual
11-22
Chapter 11 FXYBX/SXYBX
7
Adjusting the Timing Belt Tension
WARNING
The motor and speed reduction gear casing are extremely hot after auto-
matic operation, so burns may occur if these are touched. Before han-
dling these parts, turn the controller power OFF, wait for a while and check
that the part has cooled.
matic operation, so burns may occur if these are touched. Before han-
dling these parts, turn the controller power OFF, wait for a while and check
that the part has cooled.
WARNING
There is a risk of injury if fingers, etc., are caught between the drive sec-
tion pulley and belt. Always turn the controller power OFF and carefully
carry out the work if these parts may be contacted.
tion pulley and belt. Always turn the controller power OFF and carefully
carry out the work if these parts may be contacted.
!
CAUTION
The position will deviate when the belt tension is adjusted.
Carry out return-to-origin or absolute reset, and reset the point data.
Carry out return-to-origin or absolute reset, and reset the point data.
The X-axis and the Y-axis for the FXYBX and SXYBX use a timing belt to drive
the slider.
If the timing belt tension is week, adjust the belt tension with the following pro-
cedures.
the slider.
If the timing belt tension is week, adjust the belt tension with the following pro-
cedures.
Fig. 11-19 Adjusting the speed
reduction belt tension
Fig. 11-20 Adjusting the drive
belt tension
Fig. 11-21 Stay (example)
Push-pull scale
Deflection
Load
Pulley
Pulley
Belt
L/2
L/2
Push-pull scale
Deflection
Load
Pulley
Belt
Table
5
Belt
Push-pull scale
Nut
Nut
Stay
3.2 thick sheet metal
25
55
10
Hole
15