Re: [CAD_CAM_EDM_DRO] EMC Lathe mode.

Hi Jon:

From the software's point of view, I think one pulse would do. Afetr all,
the spindle is not changing speeds fast enough to disturb the mathmatics.
If you time the distance between pulses, you can figure out where the
spindle actually is at all times I would think.
(or not?)
Art
Master5 Software
http://users.andara.com/~fenerty/master.htm

----- Original Message -----
From: "Jon Elson" <elson@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Tuesday, October 02, 2001 1:38 AM
Subject: Re: [CAD_CAM_EDM_DRO] EMC Lathe mode.


> Art Fenerty wrote:
>
> > Thanks Doug:
> >
> > Maybe I'm gonna have to add lathe mode to my ever growing list.
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? Or am I missing something?
>
> No, one pulse per revolution is not good enough. You need at least a few
> hundred counts per rev to do any justice to the coarser threads. Really,
you
> should have at least a few encoder counts per servo cycle at the slowest
> spindle speed you expect to cut at.
>
> Jon
>
>
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