How does "multi axis tilting" function work?

[Cris-Ideas]

Hi,

I am just starting to discover fusion CAM functionality, and have to admit having some problems finding comprehensive information about some functions and practicalities.

I was experimenting with 3D contour toolpath and there is an option called "multi axis tilting". I however can not find and description on how exactly does it work.

As far as I know there is no machine setup in fusion (am I right?). If so and only 3 axis milling machine is available then how any tilt can be programed?

Cris.

[daniel_lyall]

I dont thank multi axis tilting (never seen it) works you can do indexing with fusion very well what is set up like 3 + 2 or 3 + 1 have a look at this vid it's how you do indexing with fusion, you set up the tool paths the same way no matter what the tool path is. https://www.youtube.com/watch?v=kDUnkTRv23M

[daniel_lyall]

it looks like it is for a b and c axis head just had a play and the way it was moveing it looks like a B and c axis head movement, I just set it up like I do for indexing, I may be wrong but yer there is nothing on how to use it.

[Laurens-3DTechDraw]

I do have a german HSMWorks video on this: https://www.youtube.com/watch?v=R_SazImakWI

And a video of it at work: https://www.youtube.com/watch?v=qGBcRnBfWEg

The idea behind it that it will tilt the toolpath when it can no longer reach without the toolholder colliding.

That's why shaft and holder needs to be on.

But on this as a whole I have two warnings:

One you might crash the machine:

https://camforum.autodesk.com/index.php?topic=8214.msg39700#msg39700

Two you might spend a lot of time finishing a part and have it turn out very bad:

https://camforum.autodesk.com/index.php?topic=7007.msg30446#msg30446

So have fun playing around with it, but I wouldn't advise using it on the machine.(And trust me I did try it)

[daniel_lyall]

Thanks Laurens, so another way to put it bugger that for a joke. just dont use it.

[Cris-Ideas]

Hi,

Thank you for input.

But all that did not get me much forward in understanding this.

I use Autodesk Fusion 360 and my home build 3+1 milling machine.

In fusion I did not find any place to define machine setup.

In most videos on youtube people use solidworks in witch machine setup is quite compressive, and in such case whole idea is quite easy to follow.

But in fusion  where I have no machine setup (As far as I know) I cannot imagine how this "tilting" can be implemented.

Cris.

[Laurens-3DTechDraw]

The toolpath generation doesn't care about what your machine configuration is.

The machine configuration is only used to say if the move is possible or not on the machine during the simulation.

Machine configuration has no other purpose than simulation and possible Post processor set-up. It's not usefull for the toolpath generation.

Conclusion for you is that it's not really usefull for 4-axis machines. Only 5&5+ -Axis machines.

[Cris-Ideas]

Hi,

OK that's something.  But rises other questions. (probably quite fundamental, please be understanding)

How (when) is toolpath processed in to code appropriate for a given machine setup? Is it all done in post processor?

Or are there some settings that a given post processor can accept. For example my machine is run by LinuxCNC so for basic 3 axis situation I suppose EMC post processor will be appropriate.

But if 5 axis machine was controlled by LinuxCNC how was I to define that given rotation is associated with spindle or table and how model is associated with machine coordinate system?

On youtube videos (given earlier) I saw motly people using HSM pro and SolidWorks. They have been dealing with this using machine configuration. This is also described here http://www.hsmworks.com/docs/hsmworks/2013/en/#MachineConfiguration.

Could someone point me in the right direction to understand this.

Cris.

[Laurens-3DTechDraw]

As said earlier, the toolpaths don't care what your machineconfiguration is in HSMWorks. It's only there for making machinesimulation possible.

All rotations that are done are outputted by the post processor. You have to define your machines capabilities in there.

Most posts have this already pre-made in the onOpen() function so you only have to enable the 4th and/or 5th axis.

If your machine is able to do coordinate system rotations. Like G68.2 in Fanuc and Cycle 19.0/Plane spatial in Heidenhain this is something that is also handled in the post processor.

So please trust me whatever is written or shown on the internet the whole machineconfiguration in HSMWorks is useless for the toolpath calculation.(This gives problems like I put a link to earlier, but that's a different issue).

[Cris-Ideas]

Hi,

Thanks, I am just reading about post processors.

This is a long term hobby job for me, so I intend to go threw all this with no rush. I like to know exactly what I am doing.

Something little of topic.

Machine simulation is a cool feature, at least it looks nice in solidworks. Is it going to be available in Fusion as well?

Cris.

[daniel_lyall]

that a one day thing as off now no to Machine simulation.

its a good idea to take your time, any questions just ask, there are some M codes that Linux does not use at all, it would help you if you know what does and does not work.

to get your 4th axis working with fusion the changes Laurins said about need done to your post, the best way to get this done is if the post processor you are using for Linux to do 3 axis work, works fine with no problem ask here or on the HSM forum for the changes to be made to it.

for how to do 4th axis indexing, how fusion does it is you set it up as 3 + 2 that is in the learning page. the vid I posted is how you have to do it, so just ask if you need help with that.

4th axis indexing is all fusion has at this time for 4th axis work, you can ask for a wrapping post processor but that is a case by case set up it's not a ADSK thing.

if you need to back plot your code for now NC corrector 4.0 work's quite well and is a free down load.

and if you like doing cnc for a hobby, it becomes a addiction.

[Anonymous]

Yep that's how it got me. 

First a passing interest, then a hobby. Now a career! 

Wish I could go back in time and tell 16 year old me to get into machine shop! 

[daniel_lyall]

now you just need to add a 4th to your table