KNOVA KN CM-20W3 Manual Del Usuario página 8

ADJUSTMENTS
4. Remove the remaining three knives in the same manner.
5. Thoroughly clean the knife slots, gibs, springs and locking
screws. Check the locking screws; if the threads appear
worn or stripped or if the heads are becoming rounded,
replace them.
6. Inspect the cutting edge of the knives for nicks or wire
edge. Hone the knives slightly using a stone, or if
the knives are to be sharpened, maintain a cutting
angle of 35 degrees.
7. Insert springs, knives and gib into slot of cutterhead.
Back out locking screws just enough to hold the knife in
the cutterhead.
8. Place knife gauge (C, Fig. 19) over knife.
9. While holding down on the knife gauge, loosen all six
locking screws (F) by turning them into the gib (E) until
cutting edge of knife comes into contact with the
protrusion (D) of the gauge. Snug up the gib by slightly
backing out the six locking screws against the slot.
Note: At this time, only tighten the knife into the slot just
enough to hold the knife in position
Wrench
Cutterhead
10. Replace and reset the other three knives in the same
manner.
11. After all four knives are set with the screws just snug,
back out and tighten the six screws (F) against the slot
starting with the end screws first and then the center
screws until the knife is securely held in the cutterhead.
Tighten the remaining three knives in the same manner.
WARNING
After replacing and checking knives,
CHECK AGAIN carefully. Make certain the direction
of knives is correct and all twenty-four locking screws
are tightened securely.
Checking work table parallel to cutterhead
The work table is set parallel to the cutterhead at the factory
and no further adjustment should be necessary. If your
machine is planing a taper, first check to see if the knives are
set properly in the cutterhead. Then check to see if the work
table is set parallel to the cutterhead. Proceed as follows:
1. Disconnect machine from power source.
2. Place the gauge block (Figure 21) on the work table directly
under the edge of a knife or knife insert as shown. Make
slight contact with the knife edge by gently raising the
table.
3. Move the gauge block to the opposite end of the work
table. The distance from the work table to the edge of the
knife should be the same on both ends of the knife.
Raise
table
Adjusting work table parallel to cutterhead
The work If the work table is not parallel to the cutterhead,
perform the adjustment procedure as follows:
1. Disconnect the machine from power source.
2. Tilt planer on its side to expose underside of base,
as shown in Fig. 22.
3. Remove bolt (A, Fig. 22) and loosen bolt (B, Fig. 22) which
Knife gauge
will allow you to move the idler sprocket assembly
(C, Fig. 22) far enough to release tension on the chain.
4. Remove chain from the particular sprocket on corner of
base that must be adjusted. Turn the sprocket by hand
to bring that corner into adjustment with the other
three corners.
Figure 20
NOTE: Turning sprocket clockwise will increase the
distance between the working table and headcasting;
counter-clockwise will decrease the distance. This
adjustment is very sensitive and it should not be necessary
to turn the sprocket more than one or two teeth.
5. When adjustments are correct, replace chain around corner
sprocket, slide sprocket (C, Fig. 22) back to re-tension
chain, tighten bolt (B, Fig. 22) and replace and tighten bolt
(A, Fig. 22).
7
Knife
Gauge block
Slide sprocket
to release tension
Figure 21
Figure 22