Fails to finish generating toolpath - hangs at 6%

[tyethgundry]

https://a360.co/4iLKqEO

Just hangs at 6% every time, I've rebooted etc, and the CAMKernel is running still endlessly once I choose generate for the last operation.

I just wanted to rough out a square off-centered bit of stock, but using the rotary axis. I'd assumed I could do that with a rotary contour or something, but it seemed to do the most insane path (not adjusting Z for the stock and instead offering a 17hour version of a round stock equivalent.

Instead I've gone with 4 separate (90* offsets) 3d roughing operations. I don't quite understand why they are 20.5mm away from the centerline when the model should be 38mm (19mm center) with 0.5mm left from model.

Then I've added fillets and a 5th operation for a rotary finishing pass. I was hoping that would then allow me something like a finishing operation to do all the curved and flat surfaces. Later I was going to add the text with a smaller bit.

Any advice appreciated, I'm new to the rotary and pretty inexperienced with fusion 360.

I've got a 3-axis Snapmaker A350 with the rotary addon, and I'm using their postprocessor successfully for the first 4 operations (already run)

[a.laasW8M6T · Accepted solution]

Hi

See Video for explanation

[tyethgundry]

Thank you so much!

[tyethgundry]

Thank you so much! The Geodesic one was what I was hoping for (tool perpendicular to surface angle), and of course I forgot about using the off center stock's box point would give offset sides in world/model coords. I had wondered about having simple bodies for easier toolpath calculation (i.e. a second surface with no text) as selecting that text covered surface destroyed the selection in most dialogs.

Just curious, did that last operation of mine ever generate, or is it possibly a bug situation that should be reported?

I'll be testing this out today, so thanks again!

-Edit- is there a single operation to rough all the stock as efficiently as possible? I saw the option somewhere for the rapid movement/speed preference (maintain speed on one or more axis as priority in toolpath generation), which would surely affect the toolpath a lot, along with the tool angle to surface (not fussed for roughing), but I wasn't sure what's best so left at the first option of rapid movements on all axis I think.

I have also a fundamental disagreement with fusion 360's toolpaths in that they don't accept an endmill for geometric paths, surely that's my choice with stepover and tool angle to surface accounted for a bit?

[a.laasW8M6T]

Hi

I didn't look at the Advanced swarf I just deleted it haha, it isn't the right toolpath for what you are trying to do.

I just looked at it again now and it was never going to work with the setting you had, so not a Bug, just the wrong application

The Highfeedrate option is for Rapid moves and is needed on some controllers that don't handle combined linear/rotary rapids well or for machines that have dog leg rapids.

This shouldn't affect how fast the toolpath is actually run, so unless you are having jerky repositioning rapid moves there no need to adjust this.

I'm not sure exactly what you mean by Geometric toolpaths? the Geodesic toolpath only allows spherical tools(Ballnose/Lollipop)

There are other toolpaths that will allow the use of other types of tools but they are a bit harder to setup.

See attached with Blend and Flow

I've had to apply a toolpath links and leads modification to get the cylindrical clearance area to work which i think is an issue I will report

[tyethgundry]

Thank you, you've made my Christmas already... seeing my machine beautifully contour trace with a live z and rotary action (actually aircut 2mm above but I'd already updated my base model and forgot when using your new one) was a lovely sight to behold, and why I originally thought fusion machining extension worth trying.

The processes to get there feels less than ideal, a bit more like using some other cad packages, and the cost is scary (pay as you go is 3x annual - a shame as the initial calculator suggested 108$ per year in tokens would suffice until I looked at the full price table) for someone wanting to play who isn't using a $500,000 machine (at which point the time saved machining on wear/maintenance far outweighs 3.5k$/year).

Guess I've got 24days to use fusion and maybe 10 on the extension so we'll see where we get to.