-29-
W1754 20" Planer With Mobile Base
SE
RV
IC
E
Table Parallelism
Table parallelism is critical to the operation of the
machine. As such, it is essential that the table is parallel
with the cutterhead (within 0.002") from side-to-side, as
illustrated in
Figure 25
.
Maximum Allowable Tolerances:
Cutterhead to Table Side-to-Side ..................... 0.002"
Headstock to Table Front/Back ....................... 0.020"
How the table sits in relation to the headstock from front-
to-back is also important (see
Figure 26
). Because the
feed rollers, pressure bar, and chip breaker will be adjust-
ed off the table position, the tolerances on the front-to-
back positioning are not as critical as the cutterhead/
table side-to-side positioning. Therefore, the maximum
allowable tolerance for the front-to-back parallelism is not
more than 0.020".
Table Parallelism Inspection
The easiest way to determine if your table has a parallel-
ism problem with the headstock is to lower the bed roll-
ers below the table surface, plane a workpiece, and mea-
sure the thickness in multiple locations. If the workpiece
is tapered from left-to-right or from front-to-back, then
parallelism may be a problem.
Use your Rotacator to further inspect the table parallel-
ism. If you do not have a Rotacator, a wood block and
feeler gauges may be used, but extra care must be taken
to ensure accuracy. If the table is not within the maxi-
mum allowable tolerances, it must be adjusted.
Table Parallelism Adjustments
The table is adjusted by turning the chain sprockets
underneath the table for movements over 0.016" or by
adjusting how the table is mounted on the columns for
movements under 0.016".
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Figure 25
. Side-to-side parallelism of
table and cutterhead.
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Figure 26
. Front-to-back parallelism.
NOTICE
When making adjustments, tighten fasteners after
each step to ensure the accuracy of your tests.
When adjusting the chain sprockets, keep in mind
that if the chain becomes too loose, it will fall off of
all the sprockets. Returning it to its proper location
will be frustrating and time consuming.
Summary of Contents for W1754H
Page 20: ......
Page 31: ... ...
Page 34: ... 3 W1754 20 Planer With Mobile Base INTRODUCTION ...
Page 70: ... 39 W1754 20 Planer With Mobile Base SERVICE W1754 Wiring Diagram ...
Page 73: ... 42 W1754 20 Planer With Mobile Base PARTS Headstock Assembly Parts Breakdown ...
Page 78: ... 47 W1754 20 Planer With Mobile Base PARTS Base Breakdown ...
Page 81: ... 50 W1754 20 Planer With Mobile Base PARTS Columns Breakdown ...
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