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Model W1862/W1863 (For Machines Mfd. Since 02/19)
Adjusting.Table.
Parallelism
Maximum.Allowable.Tolerances:
Cutterhead/Table Side-to-Side ........................ 0.002"
Head Casting/Table Front/Back ....................... 0.020"
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.58.
How the table sits in relation to the head casting from
front-to-back is also important (see Figure.59). Because
the feed rollers, pressure bar, and chip breaker will
be adjusted 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
Use your Rotacator to inspect the table parallelism. 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 maximum
allowable tolerances, it must be adjusted.
Table.Parallelism.Adjustments
The table is adjusted by turning the chain sprockets
underneath the table for movements over 0.008" or by
adjusting how the table is mounted on the columns for
movements under 0.008".
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,.and.returning.it.to.its.proper.location.can.
be.extremely.difficult.
Parallel
SIDE-TO-SIDE
Not-Parallel
Figure.58..Side-to-side parallelism of table
Parallel
FRONT
Not-Parallel
Figure.59..Front-to-back parallelism of
table and cutterhead.
-51-
Cutterhead
Parallel
Table
FRONT
VIEW
Cutterhead
Not-Parallel
and cutterhead.
Headstock
Parallel
Table
BACK
Headstock
Not-Parallel
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