Multi Axis Contour / 4-axis Lock issue

[RUSHdesign]

I am almost afraid to post this because my research on the forums thus far has mostly appeared to return the answer of, "Yeah that is in beta. It doesn't work correctly yet."

Regardless, I will continue in the hopes that someone can help me out here.

I have a very shallow taper cone part (1" diameter to 0.75" diameter over 33") onto which I need to engrave hand-drawn art. Ideally this would be an actual "Engrave" / vee-cut tool path, but that does not wrap. Not that wrapping would help me anyway, since my model is not a cylinder; hence my reason for going with Multi Axis Contour. See this part below:

When I generate this toolpath, it appears to work though I have to say the retraction strategy is a little strange. When I simulate this, it appears to work, but it shows tons of collisions. I am not too worried, as those collisions appear to be happening when the tool/shank/holder are really nowhere near the part.

In this next pic you can see how the tool holder appears to be cutting along nicely. This is basically what I want it to be doing- rotating on the A-axis and otherwise behaving as a 3-axis machine: continuous 4-axis machining.

However, because this is Multi Axis Contouring it is not necessarily containing all of its motion to the A-axis. The taper is very slight, but it is there, so Fusion is including B-axis moves. I have a 3-axis VMC with a single rotary A-axis table, so I cannot process code with B-axis moves (and Fusion throws an error when trying to post it, and refuses to create an NC file). There is no real workaround for this, aside from enabling CAM Beta mode and using the "4-axis limit" option:

When I enable this and regenerate, I get the following helpful message:

I understand that "4-axis limit" is in beta, but it is utterly confusing. I know what I think it should do, but I have no idea how to make it happy. Which axis is it limiting the rotation to? Am I doing something wrong or is it just buggy?

Any direction you all can provide me with will be greatly appreciated.

Thanks,

Jon

[LibertyMachine]

For the best possible help, could you provide a part file, or something similar to it if you don't want to share something proprietary?

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

[RUSHdesign]

Hi Seth,

Thanks for the quick response.

I have attached the file here.

Best,

Jon