My lathe is running the most time 1500-3000 rpmglbreil wrote: ↑Sun Jul 13, 2025 5:48 pm Thanks I understand I probably just need some to do some testing, but at 500ms it seems pretty jerky and you are actually going 0 - 100 even faster at 150ms and 300ms, does that actually have the effect of slowing down or smoothing it some since it’s doubtful it and accelerate and decelerate that quickly?
for ex. 2000 rpm = 33.33 rps -> 5 revs in 150ms, so you can expect chip breaking every 5 revolutions.
With good servo tunning, this is no problem since the feedrate fluctuates smoothly in a sine curve.
Pecking with for ex. +1mm federate -0.1mm rapid is way more jerky, but 100% sure chip breaking.
Uwe