JUKI DDL-9000 Engineer's Manual page 33

(Adjusting the feed mechanism of feed base components)
[Adjusting the longitudinal position of the feed dog]
1) Adjust the marker dot of feed driving base pin (1) to
the right and feed rocker base pin (2) to the upper
right at approximately 45˚.
(Adjust in the state when adjustment of the feed base
pin has been completed.)
2) Set the feed dial at "5".
3) Temporarily tighten the setscrew in feed rocker base
arm (3), turn the handwheel to observe the symmetry
of the feed dog in terms of the groove of the throat
plate. Tighten the setscrew in feed rocker base arm
(3) at the position where the central symmetry is
obtained.
[Adjusting the lateral position of the feed dog]
1) After adjusting the longitudinal position of the feed
dog, in the state that the feed dog is fixed in the almost
center of the setscrew in the feed base, check the
clearance in the lateral direction of the throat plate.
If the slippage is small, it can be adjusted with the
play in the installing hole of the feed dog. If it is large,
however, readjust the lateral position of feed driving
base arm (4) and feed rocker base arm (3).
* Loosen setscrew (4) in the feed driving cam, loosen
the swetscrew in the feed rocker base arm (3), and
adjust the lateral position of the feed dog.
Determine the longitudinal position of feed rocker arm
(3) referring to the points of adjusting the longitudinal
position of the feed dog.
* Tighten setscrew (4) in the feed driving cam in the
state that the central marker line on feed driving cam
plate (5) is aligned with marker line (6) in the feed
driving shaft.
Turn the handwheel several times to and fro by hand
before tightening to prevent the adjustment from the
state that the feed driving base arm in terms of the
feed rocker base arm is improperly positioned.
When the feed driving cam does not lightly turn before
tightening the setscrew in the feed driving cam, there
is a defective part. So, be careful.
(1)
(5)
− 30 −
(4)
(6)
45˚
(2)
(3)