Re: [CAD_CAM_EDM_DRO] Lathe Encoders

John,

Not sure if this helps or not but 6.125 turns per inch is a pitch of
about 0.16327" per turn. This is close to 4mm per turn and given the
lathes were built in Austrailia you might have metric leadscrews.
Knowing this may help you get a little closer to figuring out what
you really need in the way of an encoder.

Drew

John Mesh wrote:

> Hi all,
> Once again I need your expert advice on encoders.
> I have 2 small Hercus Compulathes - CNC lathes that I am trying to
> convert
> over to PC control. Currently, both of them have resolvers.
> Would like to put 320 Gecko's and encoders on them.
> My question is, what CPR for the encoders.
> Here is the encoders that I would like to buy . (H1 series)
> http://www.usdigital.com/products/h1h3/
> On the X axis (cross slide) the encoder is attached direct to the
> screw.
> About 6.125 turns moves the crossilide 1"
> On the Z axis (carriage) the encoder is mounted on the end of
> the servomotor. About 12.25 turns gives me 1" of travel, as the motor
> drives the screw with 2:1 ratio with a cogged belt.
>

[snip]

> P.S. Lathes can be viewed at:
> http://cgi.ebay.com/ws/ebayISAPI.dll?
> ViewItem&item=2515397279&indexURL=0&photoDisplayType=2#ebaylargephoto
> hosting
> The ANCA control, seems to be one hell of a unit, unfortunately its
> dead in the water.........
> Anybody need some used ANCA parts?
>
>
>
> Thanks in advance,
> John Mesh
> jmesh@...
>
>
>

--
Drew Rogge
drew@...