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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.
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.
!
CAUTION
The position will deviate when the belt tension is adjusted.
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.
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