Re: [CAD_CAM_EDM_DRO] Can you use a mill CAM to run a lathe?

bjammin@... wrote:

> At 12:44 PM 9/18/02 -0500, Jon Elson wrote:
> >But, there's no
> >way to single-point thread on a lathe without a spindle encoder.
>
> Not so. I do it frequently. All you need is to drive spindle with a servo
> or stepper. Then all straight threads are two-axis feeds and tapereds are
> three-axis feeds. Have all that built into my software too.

Yes, with a stepper-driven spindle, alignment can be maintained. With
a servo motor, but no encoder, how do you line up with the existing thread
to make a second pass. And, how accurate would the thread be, even if
you could cut it in one pass, without any direct feedback on spindle speed?

Jon