Pocket NC V2, Руководство по устранению неисправностей

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Section ​ ​ 2: ​ ​ Machining/Performance ​ ​ Issues
Problem Explanation Possible
​ ​
Solution/Things
​ ​
to
​ ​
Try
My ​ ​ tool ​ ​ chatters ​ ​ during
the ​ ​ cut.
Vibration
​ ​
causes
​ ​
the
​ ​
cutter
to ​ ​ not ​ ​ cut ​ ​ smoothly. ​ ​ This
vibration ​ ​ is ​ ​ due ​ ​ to ​ ​ the
natural ​ ​ frequency ​ ​ of ​ ​ the
tool/spindle.
1. The ​ ​ feed ​ ​ and ​ ​ speed, ​ ​ and/or
step-down ​ ​ and ​ ​ step-over
need ​ ​ to ​ ​ be ​ ​ adjusted. ​ ​ See
the
​ ​​
feeds
​ ​
and
​ ​
speeds
tutorial ​ ​ ​ for ​ ​ more
information.
2. Turn ​ ​ the ​ ​ spindle ​ ​ speed ​ ​ up.
3. Adjust ​ ​ the ​ ​ feedrate, ​ ​ usually
moving ​ ​ slower ​ ​ will ​ ​ be
smoother, ​ ​ but ​ ​ this ​ ​ is ​ ​ not
always
​ ​
the
​ ​
case
4. Increase ​ ​ the ​ ​ step-down,
taking ​ ​ a ​ ​ deeper ​ ​ cut ​ ​ into ​ ​ the
material
5. Increase
​ ​
or
​ ​
decrease
​ ​
the
step-over, ​ ​ the ​ ​ width ​ ​ of ​ ​ the
cut. ​ ​ Typically ​ ​ the ​ ​ ideal
step-over ​ ​ is ​ ​ about ​ ​ 60% ​ ​ of
tool
​ ​
diameter.
Spindle
​ ​
sounds
​ ​
like
​ ​
it
​ ​
is
slowing ​ ​ down ​ ​ during ​ ​ the
cut.
The
​ ​
spindle
​ ​
power
​ ​
is
insufficient ​ ​ for ​ ​ the ​ ​ amount ​ ​ of
material ​ ​ being ​ ​ removed.
1. Decrease
​ ​
the
​ ​
feed
​ ​
rate
​ ​
in
5% ​ ​ steps ​ ​ until ​ ​ the ​ ​ spindle
stops ​ ​ bogging ​ ​ down
2. Decrease
​ ​
the
​ ​
step-down
and ​ ​ step ​ ​ over ​ ​ in ​ ​ your
toolpaths.
3. Switch
​ ​
to
​ ​
a
​ ​
tool
​ ​
with
​ ​
more
cutting ​ ​ flutes.
The
​ ​
Pocket
​ ​
NC
​ ​
is
​ ​
not
cutting ​ ​ in ​ ​ the ​ ​ location
that ​ ​ I ​ ​ expected.
1. Make ​ ​ sure ​ ​ that ​ ​ the ​ ​ origin
for ​ ​ your ​ ​ toolpaths ​ ​ is ​ ​ the ​ ​ B
table
​ ​
offset/machine
​ ​
origin
point ​ ​ of ​ ​ the ​ ​ Pocket ​ ​ NC.
This ​ ​ is ​ ​ a ​ ​ point ​ ​ in ​ ​ space
about ​ ​ 0.839 ​ ​ inches ​ ​ above
the
​ ​
center
​ ​
of
​ ​
B
​ ​
table.
5