Brother BAS-311E Feed mechanism Y axis 311E and 311EL, Assembly, e 1!0, t r qty o, r !2, q 1w

Chapter 3. Assembly

Feed mechanism (Y axis) 311E and 311EL

e

!1!0

u w

1.Loop the Y-timing belt q around the Y-driving pulse mo- tor bracket w, and pass Y-pulley shaft B e through the Y-driving pulse motor bracket w, timing pulley A r, and the micro bearing t. Attach the retaining ring y to hold them.

2.Insert Y-pulley shaft A i into the Y-driving pulse motor base u, passing it through timing pulley A o, the ball bearing !0, and the idle gear !1. Position the idle gear !1 so that there is no end play with it.

t r

qty

o

!0 i

u

0.5mm0.5mm

r !2	o
w

!5

3.Secure timing pulley A r with a clearance of 0.5 mm from the Y-driving pulse motor bracket w left.

4.Secure timing pulley A o with the set screw !2to pro- vide a 0.5 mm clearance with the Y-driving pulse motor base u.

5. Lightly pressing the driving gear !4of the Y-pulse motor

!3against the idle gear !1, attach the Y-pulse motor !3to

the Y-driving pulse motor base u.

!3

u

q

!1w

!9

	Note: Make sure that there is no backlash between the
	idle gear !1and the driving gear !4.
6.	Temporarily attach the Y-driving pulse motor bracket w
	to the Y-driving pulse motor base u using the bolts !5.
7.	Sandwich the timing belt spacers !7between the Y-tim-
	ing belt q and the Y-driving shaft holder !6, place the
	belt holder !8on the Y-timing belt q, and secure the Y-
	timing belt q to the Y-driving shaft holder !6.

!4!8

!7

!6

u

8.Lightly pressing the assembled Y-driving pulse motor base u against end A of the machine, secure it with the screws.

“A”

BAS-311E.311EL.326E.326EL 35