INCREMENTAL THREAD

mario_rl wrote: I NEED TO PERFORM A INCREMENTAL THREAD.

Basically it seems to be a thread with a varying pitch.
If I was making one I would probably create the G-code in Excel, as a set of angular positions and calculated axial positions.
However, it could also be done by calculations inside G-code.
Consider a G-code loop iterating over angles in steps of (say) 10 degrees and calculating the required Z position.

ok,
may be is there a soft to perform a simulation first?

Thanks, Mario.

mario_rl wrote: may be is there a soft to perform a simulation first?

There is cutviewer.cncca.co.uk/ (as an example) though that is not Free, not free, Windows-only and doesn't do 4-axis simulation.
It looks like Vericut can do 4-axis: www.cgtech.co.uk/products/about-vericut/module-multi-axis/ but I think that is very expensive.
This is confusing.. Another package called CutViewer, but it looks like a different one: www.grzsoftware.com/cutviewer/
Available as a 30-day trial. Again not Free or free.