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How to untrim with multiple faces?

bmarkeyJ44PH
Enthusiast

How to untrim with multiple faces?

bmarkeyJ44PH
Enthusiast
Enthusiast

All the examples I've seen for untrimming have been a hole/pocket on a flat face.   I'm trying to do that with a feature that we just cannot get to surface mill correctly.

 

( Side note, I can't post models, NDA, so I had to use a flat partial screenshot.   If there is a better way please let me know )

 

In the picture I'm trying to surface mill the 3 highlighted faces.  No matter how I do it it leaves the bottom unfinished.   I'd like to try to fill in that hole and see if it works then.

 

For scale that hole is about .400 in diameter.

 

Thank you

Bruce

 

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Respuestas (4)

chrisYPL9Z
Contributor
Contributor

Try a Z level surface milling with the flat srf support checked in the milling tab.

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bmarkeyJ44PH
Enthusiast
Enthusiast

We tried that. I tried every combination of z level, or even parallel to get this to work. In the end I changed the program to profile it.    It seems to be fine roughing but will not finish the front lip of the bottom of the feature.

 

I was hoping filling in that hole might help.  Either way I'm still curious how to trim with 3 faces involved.

 

Thank you

Bruce

 

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chrisYPL9Z
Contributor
Contributor

You can fill the area using Surface edges to create a curve and then try a Cap surface. You can't untrim a imported model since there is no data on the previous state of the model for featurecam to reference. If Cap doesn't work you can try from surface region using the same curves.

EDIT: It looks like you might be using a stock model, switch to a standard block and just check and see if its just no seeing enough material there to generate a tool path.

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brian.donahue
Autodesk
Autodesk

If you have a solid model, then most of the time, you can "delete faces" (with healing), and  get the solid without the hole (or pocket).   See Solid tools -> Manufacturing -> Delete Faces.  Make sure the heal checkbox is ticked. (I say "most" of the time, since it doesn't work great if there is a complex fillet or blend). 

deleteFaces.png



Brian Donahue
Product Owner FeatureCAM
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