JUKI AMS-221EN Series Engineer's Manual page 9

Adjustment Procedures
1) 2516
1. Loosen 2 setscrews
2. Vertically move the throat plate auxiliary cover
auxiliary cover support
plate auxiliary cover
and that the vertical difference between two is kept within 0.3mm.
Since then, fix them by means of 2 setscrews
2) 3020
1. Loosen setscrews
2. Vertically move throat plate aux. cover
and make adjustments so that the clearance becomes 0.8 to 1mm
between the upper face of throat plate aux. cover
face of lower plate mounting plate
throat plate aux. cover
and its step difference is kept within 0.3mm. Since then, fix the
setscrews (2 pcs.) and the setscrews
* Confirm that the clearance maintains its length at 0.8 to 1mm
throughout the moving range in Direction X.
and 6 setscrews .
to make adjustments so that the throat
is positioned higher than the throat plate
(2 pcs.) and setscrews
and throat plate aux. cover
under the conditions that the
is positioned higher than throat plate
(12 pcs.).
and the throat plate
and 6 setscrews .
(12 pcs.).
and the lower
– 5 –
Results of Improper Adjustment
o The feed plate is caught by the
stepped part of the throat plate
and the throat plate auxiliary cover
, thus causing deformation of
shape.
o Bending is caused in the feed
plate.
o The lower plate is caught by the
stepped section of throat plate
and throat plate aux. cover
Such an awkward condition
results in shape deformation.
o A bend is caused in the lower
plate.
o A problem of contact is caused
with lower plate mounting plate
and throat plate aux. cover
.
.