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How do I avoid this face in 3D addaptive clearing?

ghiggsUVQ9T
Advocate

How do I avoid this face in 3D addaptive clearing?

ghiggsUVQ9T
Advocate
Advocate

Hi there :slightly_smiling_face:

Ok I've been trying for the last 2 hours and 12 minutes to figure out how to create A tool path to machine this object without the tool touching or traveling past the flat front face?

I used to be able to do it with avoid touch surface. I have tried numerous attempts at changing settings on the second tab. 

Please see the attached file.

 

 

Thanks

Glen

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Anonymous
Not applicable

So, adaptive tool path is only roughing strategy, tool needs to cross edge so that tip of ball end mill is cutting up to the edge.

I left stock and finished with parallel and 2D contour.

 

In second setup I used Scallop, I can select every face individually except for one I wanted to avoid touching, it selects whole body instead.

I am not sure why that is but I created offset of the face surface with zero value in offset field, included it in setup as second body then used it as surface to avoid.

 

2021-01-06 20_48_06-Autodesk Fusion 360.png

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ghiggsUVQ9T
Advocate
Advocate

 Hi Vic,

Thanks for taking the time to help!

I see how you did it and I was able to recreate your setup. 

I know adaptive clearing is not a finishing path, But was hoping to get the material machined down to the surface with that path. But as soon as you uncheck stock to leave, it wants to cut the front flat face.

About the avoid surface in Scallop. I had the same problem when trying a 3D contour to machine the whole piece. I was not able to select the flat front face by itself, fusion wanted to select the whole model.

 

Glen

 

 

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JaumeMartinez
Collaborator
Collaborator
Accepted solution

Hi @ghiggsUVQ9T ,

 

You can avoid specific faces in a 3D Adaptive Milling operation using the machining boundary option and a simple sketch.

You just have to take into account your stock and the diameter of the tool when drawing the sketch.

You can find the ScreenCast and the fixed file attached. I think you will need a 3D contour to finish the  upper surface but the 3D Adaptive op is now like you want.

Hope it solves your issue.

Kind regards.

 


Jaume M. Consultor CAD-CAM-CNC

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Por favor dame Kudos y marca esta respuesta como Solución Aceptada si responde a tu pregunta | Please give me Kudos and mark this response as Accept as Solution if it answers your question


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ghiggsUVQ9T
Advocate
Advocate

Hi Jaume,

Thanks for taking the time to help out!!!

Your operations worked out to be the best solution. 

 

 

thanks

Glen

 

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Anonymous
Not applicable

ooking back at your original file, all you need to do to avoid face in question is to select "Tool center on boundary".

Sketches come into play when you need to further restrict or expand toolpath coverage.

I was curious as to why that face cannot be selected as surface to avoid in other toolpaths, there is a workaround for that as shown earlier, but I still don't know why attempt to select that surface alone, selects entire body.

 

Edit:

While playing with few options, turns out sketches have limited effect in 3D adaptive as strategy is model aware,  making dummy bodies woud be more effective, while sketches are good option for managing 2D adoptive.

 

 

 

 

 

2021-01-11 05_25_10-QTView_(102)MessageTray.jpg

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Anonymous
Not applicable

Then again it depends on combination of selections,.... experiment with options until you beet things into compliance.

 

Can anybody shed some light on subject of not being able to select front face as surface to avoid in Scallop toolpath

shown in my previous post?

 

2021-01-11 06_25_38-Autodesk Fusion 360.jpg

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