topic Re: Need help to properly machine geometry (parallel) in Fusion Manufacture Forum

Need help to properly machine geometry (parallel)

stangbladeworks — Tue, 28 Mar 2023 01:44:41 GMT

Hi,

I am trying to get this toolpath to properly follow the part geometry. I am always getting a small step near the plunge. This does show up in simulation as well. I am pretty sure the radius of the tool fits in the geometry. If I reduce the size of the tool significantly in fusion the effect seems to improve but I have to go pretty far (.030" tool).

Is there something I can try to improve this. I can modify the geometry if needed but I would much rather not if possible. Ill include some pics and a test file. Any help is greatly appreciated.

Thanks.

Re: Need help to properly machine geometry (parallel)

seth.madore — Tue, 28 Mar 2023 10:02:22 GMT

When I really need to avoid plunging on the finished surface, I prefer to make Patch Offset surfaces to force the tool outside of the part. If you could share your file, I could give you an example of that.

File > Export > Save to local folder, return to thread and attach the .f3d file in your reply

Re: Need help to properly machine geometry (parallel)

stangbladeworks — Tue, 28 Mar 2023 15:11:01 GMT

Hi,

The file is attached here. I have played around with patches, offsets, extensions etc. and I cant get the tool to follow the geometry. If you have any techniques I would love to hear about them.

Thanks!

Re: Need help to properly machine geometry (parallel)

seth.madore — Tue, 28 Mar 2023 17:07:45 GMT

Using a Patch Surface (Offset) and some "Extend", I was able to get a toolpath that went off the part, hopefully enough for your needs. The surfaces could do with a bit more work if you want to get much further off the part than this:

Re: Need help to properly machine geometry (parallel)

stangbladeworks — Tue, 28 Mar 2023 17:45:25 GMT

thanks for the reply,

It looks like the section near the plunge (the red arrow in the original post) still has an anomaly. I am curious what you mean by the surface needs more work. I am definitely an amateur fusion user so it's likely I didn't make the surface correctly. I just used a sweep command to make the bevel then a loft with a rail to make the transition. Is there a better way to make this, and how can I improve the surface?

Thanks

Re: Need help to properly machine geometry (parallel)

seth.madore — Tue, 28 Mar 2023 18:14:56 GMT

Oh, sorry. I was referring to the patch surface needing some work for added toolpath clearance.

As for this sort modeling, that's a bit outside of my skillset, but I'll give it a go shortly

Re: Need help to properly machine geometry (parallel)

seth.madore — Tue, 28 Mar 2023 22:29:18 GMT

Here's a walkthrough on how to fix this issue. It's a large file, so it may take several minutes to upload and become viewable

(view in My Videos)

Re: Need help to properly machine geometry (parallel)

stangbladeworks — Tue, 28 Mar 2023 22:58:51 GMT

Hey man,

Thanks so much for the help. I really appreciate it. I never expected anyone would go to the trouble to make a video. I didn't even know you could do most of that stuff. I had done the offset and just used the poorly formed body but obviously it didn't work great.

Anyway, I appreciate your time I will make these changes asap and see if I can correct the remaining irregularities.