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This
scenario shows you how to recognize three different types of features very
quickly. As illustrated in this task, generally speaking, we recommend you
recognize fillets and chamfers before recognizing holes. This page deals
with the following items:
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Open the
Tasks_4.CATPart document. |
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Recognizing Fillets and Chamfers
Automatically
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Click the Automatic Feature Recognition
icon
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The Feature Recognition dialog box that appears
displays the Automatic tab as the default tab.
Using this product release, the features you can recognize
automatically are the following ones:
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Check the Fillets and Chamfers
options.
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Click Apply to recognize the fillets
and chamfers of the part.
A progress bar displays to let you see how
the operation progresses: the estimated remaining time is displayed
as well as the number of features being recognized.
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Once the operation is complete, the specification tree displays
all recognized features.
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Canceling Recognition
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If
needed, you can stop the operation by clicking the Cancel
button.
- If you do that before even a single feature is recognized, then the
message 'Feature recognition canceled. No feature was recognized.'
is displayed. The document is then in the state it was in, when you had
fired the command; except that if the In Work Object was set to an
isolated solid by the Feature Recognition command, then this
change remains. You can use Undo to get back to the previous
state.
- If some features are recognized before pushing the Cancel
button, a dialog box displays asking you if you accept to create the
features recognized till then.
- If you click Yes then the recognized features are
created, the progress bar continues to show progress of the process,
but then you are not be able to cancel it again.
- If you click NO then again the document will be in the
state that it was in, when you had launched the command; except that if
the In Work Object was set to an isolated solid by the command, then
this change will remain. You can use Undo to get back to the
previous state.
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Recognizing Holes Automatically
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Check the Holes option.
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Click Apply to recognize the holes of the
part.
A progress bar displays to let you see the estimated time remaining
before all holes are recognized. Note that you can cancel the operation
if it takes too long time.
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When done, click Close.
The dialog box is closed. Once the operation is complete, the
specification tree displays all recognized holes.
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More About Automatic Recognition of
Fillets and Chamfers
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In some
simple cases, the automatic recognition of fillets or chamfers fail. This
is due to the fact that Automatic Feature Recognition
is closely related to geometric properties such as angularity, proportion
(in case of chamfers) etc.
In the example below, the red colored fillet cannot be recognized
automatically because the angle value is too small. The work around to
solve this case, is to use the Manual Feature Recognition
command
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Recognizing Complex Holes
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If you
want to recognize complex holes (holes more complex
than countersunk, counterbored,
or counterdrilled holes), we recommend
you use the Manual Feature Recognition command
,
instead of the Automatic Feature Recognition one
.
This avoids solving ambiguous cases. For more information, this is
explained in Recognizing Complex Holes. |