Re: EMC Lathe mode.

Doug, et al:

I wonder how much trouble it would be to "fool" EMC into using the thrid
axis as feedback of spindle position. If we're only using X & Z for
basic lathe motions could we set a third rotary axis as the spindle? A
lower relolution encoder for position and either no control of speed
from EMC or a servo output controling speed. If a voltage signal could
control spindle speed then the parameters in EMC should be setable for
the slow acceleration and fast speeds of a "spindle axis"?

Just a thought.

On 1 Oct, Doug Fortune wrote:
>
> Not only spindle rpm sensing, but also exact spindle position,
> requiring an index pulse once per rev. You'd need this for threading.
>
> Lastly, it is ultimately desirable to control the spindle speed
> directly from the PC under program control. That way you can
> optimize cutting by controlling the speed of the surface cutting.
>

--
Hugh Currin
Klamath Falls, OR