Test LinuxCNC without motors and encoders connected

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7 years 4 months ago #137323 by HueyHQ
My Busellato is similar.

I've re-configured my machine axes so that Y-axis runs from the back stops (home) and negative towards the front (originally, that was positive direction like yours). Also did the same for the Z-axis for best CAM-compatibility, but it sounds like the Biesse is opposite?

I don't use Fusion360 (yet) so can't help set your WCS, but in the package I use, the WCS is in the top-left corner and I model in the X+/Y- quadrant.

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7 years 4 months ago - 7 years 4 months ago #137326 by bevins
That looks wrong to me. Facing my biesse, left to right X asix back to front Y axis. My machine homes back left.

I just tried fusion360 and I can get it correctly. You should be able to also. I dont like how fusion360 does their WCS as it is a bit tough to get it right.

Wait...... if your Y is pointing to the back of the machine then I think that is correct.
Last edit: 7 years 4 months ago by bevins.

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7 years 4 months ago #137329 by Peterdeleu
In fusion, my Y is pointing backwards yes, but is this correct? Shouldn’t it point forwards? This is the + directiion of the biesse.

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7 years 4 months ago #137332 by bevins

Peterdeleu wrote: In fusion, my Y is pointing backwards yes, but is this correct? Shouldn’t it point forwards? This is the + directiion of the biesse.


Thats correct.

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7 years 4 months ago #137405 by andypugh
A standard coordinate system is
X + to the right
Y + away from you
Z + up.

(or, other directions, depending on where you stand)

The WCS in Fusion is this way round, and that is what all G-code assumes.

This is all tool-movement-relative-to-work.

If the work moves (like on a knee mill, or some gantries, then this can be confusing, but if you look at the tool relative to the work it will always be the same.

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7 years 4 months ago #137409 by Peterdeleu
And what does this mean in my situation?
This is indeed the WCS in Fusion.
If I use this WCS, and I position the workpiece against the stop on the Biesse (left-rear), what will happen?
I don't have the machine running yet. I'm only make some simulations on LinuxCNC. and when I load the G-code that has been created in Fusion into in LinuxCNC, the workpiece is positioned outside the work area.

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