12
Table parallelism:
For accurate planning, the table must be parallel with
the cutterhead. Lack of parallelism results in a taper
over the width of the workpiece. Use the knife gauge
to ensure knives have the same protrusion along the
length of the cutterhead. Maximum deviation allowed
for good planning is 0.02mm. If deviation exceeds
0.02mm, see section on installing cutterhead knives
or section on jointing and riding knives before
levelling the table.
If knives are set correctly and the machine is
still cutting at a taper, perform the following
steps to check the parallelism of the table to the
cutterhead
Disconnect the machine from the power source.
Place a gauge block directly under the upper
cutterhead. Raise the table with the hand wheel until
the knife on the upper cutterhead just touches the
gauge block.
Move the gauge block to the opposite end of the
table and repeat the process. The distance from the
table to the edge of the cutterhead should be the
same.
Adjusting the table
:
To raise or lower one side of the table, loosen the
lockscrew that locks the threaded flange nut from
rotation in the table on the side to be raised or
lowered. Rotate the nut using a rod in the flange
holes and adjust height of the side. Relock the flange
nut lockscrew in the table. Another method that can
be used if the table is free, is to loosen two sets 4
lockscrew on the high side of the table
Figure 7
and
then rotate two column clockwise, the opposite side
until it is level. Relock the flange nut lockscrew in the
table.
Figure 7
Changing Knives
Straight knife installation:
Knife installation on a planer can be a difficult and
exacting process. If the knives are not to be jointed
and ground, end-to-end and knife-to-knife
relationship must be held within 0.03mm for accurate
and smooth planning. To help avoid cutterhead
distortion in changing out a set of knives, remove and
replace the knife in one slot before change the next
knife. The measure is 3.00mm between point of knife
and cutterhead edge
Knife gauge
Setting Height Screws
Knife
Gib
Gib lock Screws
Clean all dust, chip, pitch and accumulated foreign
matter from a cutterhead slot and off of its gib.
Working with one slot, With the knife and gib against
each other and the beveled surface of the knife on
the knife spring and the concave shaped surface of
the gib up, insert into the slot. The back edge of the