Brother International BAS-311E Network Users Manual - English - Page 72

Adjusting the tension of the timing belt

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Chapter 4. Adjustments 12. Adjusting the tension of the timing belt Note: Be sure to check the home position after adjusting the tension of the timing belt. s Adjusting the tension of X-timing belt 311E 1. Remove the X-feed bracket cover q. 2. Loosen the bolt e of X-pulley base B w, then adjust the q tension using the bolt r. w t 9.8N(1kgf) 3mm 80mm e r y 3. Move the X-feed bracket y to the left end and apply a load of 9.8N (1 kgf) to the center of the X-timing belt B t. Then adjust the X-timing belt B t with the adjust bolt u to produce a deflection of 3 mm. u s Adjusting the tension of Y-timing belt 1. Remove the belt cover q and the frame side cover w. q e r t 64 w 2. Loosen the bolt r, and move the Y-feed pulse motor bracket e to adjust the tension of the Y-timing belt. 3. When the power of the machine is turned off, there should be no slack in the Y-timing belt y and the work clamp arm u should move back and forth easily. q Adjust the position of the Y-feed pulse motor bracket e using the bolt t. When the power is turned on, move the work clamp arm u u back and forth, and adjust the tension of the Y-timing belt y using the bolt t so that there is no looseness in the work clamp arm u. BAS-311E.311EL.326E.326EL

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64
BAS-311E.311EL.326E.326EL
Chapter 4. Adjustments
12. Adjusting the tension of the timing belt
■
Adjusting the tension of X-timing belt
311E
1.
Remove the X-feed bracket cover
q
.
2.
Loosen the bolt
e
of X-pulley base B
w
, then adjust the
tension using the bolt
r
.
■
Adjusting the tension of Y-timing belt
1.
Remove the belt cover
q
and the frame side cover
w
.
2.
Loosen the bolt
r
, and move the Y-feed pulse motor
bracket
e
to adjust the tension of the Y-timing belt.
3.
When the power of the machine is turned off, there
should be no slack in the Y-timing belt
y
and the work
clamp arm
u
should move back and forth easily.
Adjust the position of the Y-feed pulse motor bracket
e
using the bolt
t
.
When the power is turned on, move the work clamp arm
u
back and forth, and adjust the tension of the Y-timing
belt
y
using the bolt
t
so that there is no looseness in
the work clamp arm
u
.
Note:
Be sure to check the home position after adjusting the tension of the timing belt.
q
e
r
w
t
3mm
9.8N(1kgf)
80mm
q
w
e
q
u
t
r
u
y
3.
Move the X-feed bracket
y
to the left end and apply a
load of 9.8N (1 kgf) to the center of the X-timing belt B
t
.
Then adjust the X-timing belt B
t
with the adjust bolt
u
to produce a deflection of 3 mm.