g0667X high precision Vs Vertical Mill
-45-
Adjusting Gibs
When adjusting the table, saddle and knee gibs
(see
Figures 62–64), keep in mind that the goal
of gib adjustment is to remove unnecessary slop-
piness without causing the ways to bind. tight
gibs make the movements more accurate, but
harder to move. loose gibs make the movements
sloppy, but easier to move.
this machine has sliding tapered gibs which
consist of a tapered piece of iron sandwiched
between two sliding surfaces. the gib is held in
position by two adjustment screws at opposing
ends of the gib. When these adjustment screws
are turned in opposite directions from each other,
the gib will be pushed back (or forth) to fill the
loose void, removing the play along the sliding
surfaces. Adjust the gib until you feel a slight drag
in the movement.
Note:
To access the saddle and knee gib adjust-
ment screws, you must remove the way covers
and way wipers.
NOTICE
Excessively loose gibs may cause poor
workpiece finishes, and may cause undue
wear of sliding surfaces and ways. Over-
tightening the gibs may cause premature
wear of these sliding devices.
Figure 62. table gib adjustment screw (left
adjustment screw shown).
Figure 63. saddle gib adjustment screw (front
adjustment screw shown).
Figure 64. Knee gib adjustment screw (bottom
adjustment screw shown).
