Centroid Community CNC Support Forum

I do not think it is a software problem since my lathe is turning without visible steps.

I would try to use sharp inserts and play with U W in G70.

Uwe

My lathe is with XZCY axis, no problem for Acorn6 Lathe ultimate version.

At the moment G2/3 is not running in XY plane, but short vector linear moves will work to mill arcs.

Intercon is only for 2 axis, you have to use CAD/CAM or handcode

Uwe

Not sure what you want, the machine on the pic do not have a real Y axis.

But with a C-axis you could interpolate a Y-axis.

C-Axis will be the third axis on a lathe.

I have made a PP for fusion to do this on a lathe with Centroid CNC

https://centroidcncforum.com/viewtopic.php?f=66&t=7936

Uwe

Could also be a problem with rigidity tunning... I use 1 turn/2.5mm on my machines to keep the servo rpm higher = more power while cutting and they run butter smooth, no vibrations. I tune rigidity till they jitter and then back off the settings a little bit till they run smooth and hold a position ...

Looks like this is tied together with your analogue out problems

Uwe

For the spindle a KBSI-240D will do the job.

https://acim.nidec.com/drives/kbelectro ... x?la=fr-fr

Uwe

FWIW, I have skimmed through most of the 403 page Lathe user manual and when I look up G99 there is nothing anywhere that says nothing will happen if it's active and the spindle isn't turning. If the spindle is turning, I am now getting movement so thanks for the tip. But is it possible to command ...

You should read the manual....

G98 per minute feed
G99 per revolution feed

if G99 is active and the spindle is not turning nothing will happen

Uwe

Looks like a mechanical problem, backlash or something else not tight.

Uwe

G91 is for mills, not for lathes

Uwe