5 Axis Post Processing - F360

[Chaz]

Hi,

Ive tried to use the UCCNC postprocessor but having issues with it and gave up. I then found another which belongs to 5eixos Spider CNC which was recommended. A bit of a struggle but I got it to work with my setup which is a knee mill (Bridgeport Clone) with a Nikken AX A and C axis setup.

It posts fine but goes to absolute mode (G90 is activate) in the output. In my Fusion 360 simulation, I got to -15 in the Z, yet in the code, it goes to - 200 (but in absolute mode).

I'd be happy to share the files / my modded processor.

Anyone managed to get a good processor working for UCCNC and Fusion 360?

Thanks

[Chaz]

IVe also just tried the Thermwood 5 Axis PP and it takes Z down to - 313, no idea why ....

Perhaps need to work out why the UCCNC PP doesnt post in my setup.

[Chaz]

I've also just noticed that the X and Y when Z goes too far down is also way too far off. IE. The part is only a 25 mm diameter part but yet im going out to X200. That said, could that be the machine 'cycling' around the C Axis?

[Chaz]

Running this on my main PC in Demo mode. Look at the extremes of the distances, yet the part is only around 30 diameter and 20 high (mm). I can understand the nature of needing to cycle in the 5th axis but this doesnt make sense. It's almost like its mistaking inch for mm but its not - ive tried both.

[Chaz]

OK, I kept reading and oddly the Mazak default 5 Axis PP seems to work. Its now only going as wide out as one would expect for this. Let me test it on the actual machine.

[Chaz]

It works but is using B versus A. I should be able to fix that. Any ideas on why the one would work and the others (both) would be completely wrong in terms of X Y Z distances?

[Chaz]

OK, thats fixed. I think I have an offset issue somewhere but might be my poor CAM ability. It looks like the table moves too close in the Y and the tool will go lower than the Z height (if the table was flat). Could be an offset / tool length thing, not sure, still digging around.

[Chaz]

OK. I cant get the offset for A to work. Here's my post on the Autodesk forums. Any ideas please?

https://forums.autodesk.com/t5/fusion-m ... p/12910723

Thanks