Re: [CAD_CAM_EDM_DRO] EMC Lathe mode.

"Art Fenerty" <fenerty@...> wrote:

> Maybe I'm gonna have to add lathe mode to my ever growing list.

Its already there with your existing software!
Although the addition of threading and css (constant surface speed)
spindle rpm control would be very nice.

> Does anyone sell a simple optical sensor that sticks on a lathe
> and pulses every time a painted dot or something passes it, that
> should be all thats required shouldn't it?

USDigital http://www.usdigital.com sells rotary TTL quadrature output
encoders with an index channel. You could just use the index channel
(one pulse/rev), but you'd only be able to do single-start threads
accurately. It probably depends on your programming constraints,
but probably want to use a course A/B encoder (say no more than
180-360 counts/rev) to guage your X&Z progress. More than that
and it gets harder to keep up with the counts (at 2000-3000 spindle
rpm).

"Bill" <wanliker@...> wrote:

>
> It would also be nice to have radius/diameter inputs on the Z axis,

No, if you want to maintain compatability with standards,
the radius/diameter inputs are always on the X axis on a lathe.

Doug Fortune
http://www.cncKITS.com