Hello team,
I'm trying to trace around the surface of this sinusoidal shape.. The 2D trace function works great, but the machine will crash all around..
I'm trying to utilize a 4th axis (rotary) to keep the tool orientation normal to the apex of the surface..
I have the rotary extension for Fusion 360, but this doesn't seem to be the solution either.
Check out the file I've attached, as well as a video
I appreciate all of your help.
Thanks!
It works as expected, Trace by definition does not drive A axis, it only follows contour in Z levels, so if contour leads to bottom of model, tool crashes thru model to get to it, there is no wrap option in trace strategy and lines can only be used as tool orientations, resulting in indexing of A axis for each segment between two lines,....... if tool can do undercut.
@Anonymous
I used solidworks Cavity feature to make the "negative" of the previous shape..
Does the attached model help to use as a dummy body?
No, the trick in wrapping on cylinder has to do with providing break in circle, otherwise it's continuous loop and tool path fails, I just wasn't thinking earlier.
After having lunch and some more chiseling I came up with something but it needs further refinement.
I assume this is detail of more complex part and you cannot set it in line with Z axis and use 3D strategy with ball end mill.
Here is my last attempt, it depends on actual tool configuration you have, as programmed you would have to adjust X axis offset in machine to bring it to size.
Model was slightly misaligned and I think I fixed that, surface you want to cut was created using spherical ball as cut toll so I come to realize that my form tool is useless.
If you have to do it on 4th axis, your only option is to use small slot cutter with radius on both edges and use tool orientation to index A axis in increments of about 45 degrees, each time machining segment between to sketch lines until done.
Here is what it looks like if you line up bore with Z axis and use Blend with ball end mill.
This is not funny any more, it seems that doing any kind of undercut in 3D is impossible. What is possible in real life is not possible in Fusion even though I made undercuts inside bores before using Flow and lollypop tool.
Tried to use it with Blend and message comes up ...... "not valid tool for milling" ..... really !? ... that's gibberish.
Here is a file showing internal chamfer done with lollipop tool and Flow.
Well, I am off work today so I am spending time messing with many things including your issue, Blend won't do you any good on this one but you can turn it on in preferences for future use assuming you are on commercial license.
It seems that all 3D strategies are focused on external features, difficult to do any undercutting due to mixed bag of conditions.
Edit;
I was not able to use Blend to undercut in 4th axis setup. I split surface in 4 sections and nothing I tried would produce tool path for one section, even tried imprting tool path from working file and adopting settings to your model, nothing.
