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3D adaptive clearing with a step

RSHEETSTBRDK
Contributor

3D adaptive clearing with a step

RSHEETSTBRDK
Contributor
Contributor

I am trying to use 3D adaptive clearing to rough a portion of my part out.  However I want the stock selection to include the pocket area (difference between the two pictures).  However I want the smaller pocket to be at the same level as the larger pocket. If it roughs down into that area i will not be able to effectively drill my relief hole before machining that smaller pocket with a subsequently smaller tool.

 

Is there an "Easy" way to do this, or do i have to model multiple parts and run multiple programs or splice them together?

 

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LibertyMachine
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Mentor

Turning on Stock Contours and limiting the height to that first surface should get you what you are looking for

 

EDIT: I see that you have Stock Contour turned on, but you've selected the areas you are cutting. This is incorrect. Stock Contours is typically for the overall size of material or area you are cutting so the tool "knows" where it's allowed to go for clearance and whatnot. It also gives it calculated surfaces to mill out to. I'd think you would just leave it to no selection, but turned on.


Seth Madore
Owner, Liberty Machine, Inc.
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LibertyMachine
Mentor
Mentor

Also, if this is a file you could share, that would be helpful. To share: File > Export > Save to local folder. Return to thread and attach in your next reply


Seth Madore
Owner, Liberty Machine, Inc.
Good. Fast. Cheap. Pick two.
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RSHEETSTBRDK
Contributor
Contributor

That just makes things worse. 

 

 

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LibertyMachine
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Mentor

For starters, if you intend on using a .062" endmill to rough out that entire area...you're gonna have a rough time. Unless of course, this part is plastic or wood?

 

Here is your file back with a couple new tool paths. Your selections were a little bit off....

On the geometry tab, you had boundaries set to None. Usually this work for general purpose stock removal, but when you want to do targeted machining, you need to either A) define where to cut through geometry selection or B) define Stock Contour to limit where tool cuts.

Your Heights were set to Stock Top and Model bottom, so it's going to go everywhere you let it. In 2D and 3D Adaptive, you can also control where the tool goes by controlling your Heights. In this case, I'd prefer to pick the top face of the pocket. (not top of model, not top of second pocket)

 

Selecting Model doesn't have really any impact in this scenario. It's there for when you are dealing with multiple components on-screen or if you have patches and filler bodies to aid you in the CAM process. I deselected those.

 

So, select your geometry to cut, define your heights, de-select the Stock Contours and you are pretty much there

 

 

 

All that being said; This is one area where I still prefer 2D Adaptive. While it's not model aware, it is very quick to program and often gives satisfactory results. In cases where you have have to haul off a large portion of material up to an edge, I find that 2D Adaptive does just as good (if not better sometimes) as 3D. Your mileage may vary

 

 Here is a screencast walking through what I did. If you've not watched these before; You can click on the lower right corner and o full screen. It also captures mouse and keyboard clicks so you can understand what I did to achieve a certain result.

 

 

 


Seth Madore
Owner, Liberty Machine, Inc.
Good. Fast. Cheap. Pick two.
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RSHEETSTBRDK
Contributor
Contributor

0.062 is just filler I have a 0.375 coromill 390 or a 7mm solid carbide tool i could use, or others, just trying to figure out the fusion cam. 

 

I will watch your screen cast a few times to figure this out.  I was not married to the 3D adaptive, 2D is fine with me, it just did not seem to work either.

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