Re: Manual to CNC Lathe Conversion -THREADING

--- In CAD_CAM_EDM_DRO@yahoogroups.com, art <fenerty@a...> wrote:

> Hi:
>
> >>As I understand in, Mach(x) syncs up to the spindle once for each
> pass, and assumes the spindle speed won't change when the cut
> begins. If you need precision threads, that may not be good enough.
>
> Actually, MachX uses the feedback pnce per Rev, and adjusts the

speed of

> the Z if required. It can adjust several times per rotation, but it was
> found that once per rotation is all thats required.
>
> Thanks,
> Art
> www.artofcnc.ca

This would be based on final part accuacy, no ?

I mean that if there was a slow, the software would try to catch up
and be either dead on the next pulse, or too short or too far.

Assuming it was dead on, that would mean that at least on thread was off.

It would go back to the old saying, accracy costs money, how accurate
can you afford to be ?

I think in practice, this is more of a problem in rough cuts and
finish cuts should not see deviations is alignment.

however, it does add in spindle speed as a function.


Dave