-46-
Model G0808 (Mfd. Since 11/15)
Adjusting Gibs
Figure 76. X-axis gib adjustment screw (1 of 2).
X-Axis Gib
Adjustment Screw
Figure 77. Y-axis gib adjustment screw (1 of 2).
Y-Axis Gib
Adjustment Screw
Gibs are tapered lengths of metal that are sand-
wiched between two moving surfaces. Gibs con-
trol the gap between these surfaces and how they
slide past one another. Correctly adjusting the
gibs is critical to producing good milling results.
Tight gibs make table movement more accurate
but stiff. Loose gibs make moving the table sloppy
but easier to do. The goal of gib adjustment is to
remove unnecessary sloppiness without causing
the ways to bind.
Gibs are adjusted with gib screws (see
Figures
76–77) that move the tapered gib back-and-forth
to increase or decrease the friction pressure
between the sliding surfaces. The process of
properly adjusting the gibs requires trial-and-error
and patience.
Refer to the figures on this page to identify the
locations of the gibs, and one of the two adjust-
ment screws for each.
Note: It will be necessary to remove small parts,
such as way wipers and covers, to access the gib
adjustment screws.
Tool Needed
Qty
Flat Head Screwdriver #2 .................................. 1
To adjust each gib:
1. DISCONNECT MACHINE FROM POWER!
2. Loosen locks for component you are adjusting.
3. Loosen one gib adjustment screw, then tight-
en the other the same amount to move the
gib.
4. Use handwheel/crank (if applicable) to move
component until you feel a slight drag in the
path of movement. Repeat
Steps 3–4 as
necessary.
Содержание G0808
Страница 68: ......
