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sjj530
1322 Views, 10 Replies

How to restrict machining area for 2D Face operation?

I have a disk with a cutout.  I want to face the surface of the disk, but restrict the machining area so the bit does not pass over the cutout.  With other toolpaths, I can select the machining boundary using a Sketch selection, but that doesn't seem to work for the Face toolpath.

 

Under Face: Stock Contours, the pop-up info says I can select any size or shape area to Face.   But I must be missing the trick.

 

Any suggestions?  Thanks!

 

1_cutout.JPG

Joshua.Aigen
in reply to: sjj530

Hi @sjj530, Would the parallel toolpath work, I bet with a bit of work this could be even better.Forum.JPG

Edit: Using Avoid surfaces with 0.1mm and selecting the three surfaces inside the cutout I was able to avoid the area completely. 


Joshua Aigen
Workshop Supervisor
sjj530
in reply to: Joshua.Aigen

Thanks for the response.   That's a good idea.   The paralell toolpath does avoid that area while cutting, but the toolpath still passes over the cutout, which I want to avoid.  

2_cutout.JPG

 

In the actual design, there is a block taller than the disk occupying the cutout space.   Originally I defined the stock to include that block, but the Face operation still passed though the space of the block.  That stumped me.  I tried removing the block and replacing it with a cutout just to simplify the problem while I looked for a solution. 

Joshua.Aigen
in reply to: sjj530

Yes, that's where Avoid surface comes in, it's in the geometry tab in the Parallel toolpath. Or you could put the block back in I think that would work with parallel.


Joshua Aigen
Workshop Supervisor
Joshua.Aigen
in reply to: sjj530

Adding in the block I just had to turn on model and select the 2 bodies.Forum.JPG


Joshua Aigen
Workshop Supervisor
sjj530
in reply to: sjj530

Thanks for the response!   Hmm.  I wonder what I'm doing wrong?   It doesn't seem to work for me.  

Any chance you could upload your modified  .fsd file so I could see  how it works in practice?     Thanks!

engineguy
in reply to: sjj530

@sjj530 

 

Have you tried using a simple 2D Contour and using it`s sideways "Roughing Passes" to step across the plate, see images below and attached file, might not be what you want but it seems to be fine here :slightly_smiling_face: :slightly_smiling_face:

First image is using the Disc as "Stock Contour", second image is using your square "Relative Stock" as the "Stock Contour", the toolpath starts and finishes off the Stock which is "best practice" IMHO, I just had to add an extra pass for the bigger stock to face it off completely :slightly_smiling_face: :slightly_smiling_face: :slightly_smiling_face:

disc-cutout-MOD.jpg

 

disc-cutout-MOD-2.jpg

 

Joshua.Aigen
in reply to: sjj530

Here is the file I created, just make sure to check your step-over, feeds & speeds etc.


Joshua Aigen
Workshop Supervisor
engineguy
in reply to: Joshua.Aigen

@Joshua.Aigen 

 

Looked at your Parallel file and it doesn`t appear to cover all the area needed to face the disc off, see image below, the Red rectangles show where the tool doesn`t cut.

disc-cutout-NEW.jpg

 

sjj530
in reply to: engineguy

Thanks, engineguy! Yes, I think your approach will work. I just started out trying to make the 2D Face toolpath work, since this really is a facing operation. And then I just tumbled down the rabbit hole in trying to find a solution. I hadn't even considered other toolpaths. Thanks!
sjj530
in reply to: Joshua.Aigen

Thanks, Joshua.   The example file helped a lot.  I just ran the parallel toolpath and it avoided the block area as desired.   Thanks for the support!