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Insert tabs and cut them away in next op

Anonymous

Insert tabs and cut them away in next op

Anonymous
Not applicable

The tab function in  the 2d contour seems to work very well. But I think fusion does not see them in the program. 

What I am doing is I holding my nested parts on a 4'x8' vacuum table and also adding tabs to help hold them. I want to add a second operation and grab a smaller bit to then machine away the little tabs. I would think adding a 2d contour with rest maching "on" would do this but it does not. I attached a file. Does anyone have any ideas its probably another bug I seem to find a bunch of them.

Thanks 

John

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Steinwerks
Mentor
Mentor

The 2D toolpaths aren't stock-aware so they won't see the remaining stock. The Rest Machining setting there is in order to clean out corners or geometry left by a larger diameter tool.

 

You can sort of get 3D Contour to work, but It's less than ideal. You might be better off making a few independent 2D Contour operations and alter the Tangential Extension distance into large negative values to trim just the tabs away individually.

Neal Stein

New to Fusion 360 CAM? Click here for an introduction to 2D Milling, here for 2D Turning.

Find me on:
Instagram and YouTube
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Anonymous
Not applicable
Is there any way you could add tabs on a 3d toolpath where it is stock
aware. The only software I have found to do this is mastercam. It's just
really expensive. It seems like such a simple thing to do. I have
workarounds but They all add a lot of time. Time is money you know.
Thanks for your reply
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Steinwerks
Mentor
Mentor

I'm not a developer, nor do I work for Autodesk, just giving my perspective (the Expert Elite folks are all just dedicated users who help out on the forums).

 

The issue you have though seems to be more related to stock awareness in 2D paths, but I don't see that changing any time soon. Someone else may be able to chime in with another strategy, but as someone who has kludged through making tabs manually in HSMWorks (they don't even exist in 2D Contour there yet), I can't think of one offhand at the moment.

Neal Stein

New to Fusion 360 CAM? Click here for an introduction to 2D Milling, here for 2D Turning.

Find me on:
Instagram and YouTube
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rasmus.pedersen
Autodesk
Autodesk
Accepted solution

@Anonymous You should be able to add a 3D Contour with "Rest Machining" and tweak it to remove the remaining stock.



Rasmus Pedersen
Senior Software Engineer
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Anonymous
Not applicable

@rasmus.pedersen I cant get a 3d contour to do anything did you have any luck with that?

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Steinwerks
Mentor
Mentor
Accepted solution

Here is a very quick example:

 

image.png

 

You will want to tweak your lead settings and possibly use some sketch boundaries to keep the toolpath out of the previous corners that the CAM thinks still need cleaning up.

 

File attached.

Neal Stein

New to Fusion 360 CAM? Click here for an introduction to 2D Milling, here for 2D Turning.

Find me on:
Instagram and YouTube
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Anonymous
Not applicable

@rasmus.pedersen I got the 3d contour to work! it works well with some adjustment. Thank you

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