CHESTER Super Lux Mill, Operation Manual

Page: 8 / 17

8
C) Lock the rack sleeve at the desired height with fixed bolt.
Fig.3
Quill returns spring adjustment
Spring tension for return of spindle, after hole drilling, has been pre-set at the factory. No
further adjustment should be attempted unless absolutely necessary. Adjustment will
probably be required if a multiple spindle drilling or tapping head is used. If adjustment is
necessary, loosen lock screw while holding quill spring housing. Do not allow the housing
to turn in your hand, or spring will unwind. Turn entire housing assembly clockwise the
number of turns necessary to cause the quill to return to its up position. (
Note:
The flat of
the spring housing pilot is lined up with the spring loading hole on the body of the spring
housing.)
Reset lock screw make sure point of screw mates to flat on the housing journal.
Adjusting table slack and compensate for wear (see fig.4)
1. Your machine is equipped with jib strip adjustment to compensate for wear and excess
slack on cross and longitudinal travel.
2. Clockwise rotation the job strip bolt with a big screw for excess slack otherwise a little
counter clockwise if too tight.
3. Adjust the jib strip bolt until feel a slight drag when shifting the table.
Clamping, table base, and machine base (see fig.4)
1. When milling longitudinal feed, it is advisable to lock the cross feed table travel to insure
the accuracy of your work. To do this, tighten the small leaf screw on the right side of the
table base.
2. To tighten the longitudinal feed travel of the table for cross feed milling, tighten the two
small leaf screw on the front of the table base.
3. Adjustable travel stops are provided on the front of the table for control of cross travel
and the desired milling length.