RE: [CAD_CAM_EDM_DRO] Re: Lathe conversion to CNC

Thanks for the feedback Peter.
Looking forward to viewing your pictures.

Larry

_____

From: CAD_CAM_EDM_DRO@yahoogroups.com
[mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of peter hart
Sent: Friday, August 11, 2006 10:03 AM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: [CAD_CAM_EDM_DRO] Re: Lathe conversion to CNC



hi Larry

my conversion is using steppers as i have a mill drill i converted to
cnc about 4 years ago that runs on emc2 so i use the same pc and
controller and just plug in the lathe or the mill emc lets you choose
different configuration at startup
if you are after a simple solution i would go for steppers just for
the ease of setup the only problem with steppers i have found on the
lathe is you may have to drop your spindle speed back to thread as the
steppers may not be able to keep up. mine will thread at about 800 rpm
on a 10 tpi thread any faster and it loses steps
on my lathe i removed all the handels and feed system of the front of
the lathe and machined up a few new parts to take the ball screws
(these are not as necessary as they are on a mill but i would highly
recomend putting them on)
i will take a coupe of pics and post them for you to look at they may
help with your conversion
if you use emc2 you will need a encoder on the spindle about 1000ppr
is a good size
turbocnc only requires a index pulse for threading which is a bit
easier to set up but i prefer emc2 as you can turn the spindle at
different speeds and emc will make the steppers match your speed its
pretty cool actually turning the spindle and watch the zaxis turning
like it was driven by back gears

cheers
peter

--- In CAD_CAM_EDM_ <mailto:CAD_CAM_EDM_DRO%40yahoogroups.com>
DRO@yahoogroups.com, "Larry Bush" <lbush@...>
wrote:

>
> Hi Peter,
> Thanks for the feedback. I also am having a bit of trouble finding

any

> information on converting a mini-lathe to cnc.
> I have a Jet 10x24 lathe I use every day but do not want to convert

it. Any

> information and/or details you could proved me will be greatly

appreciated.

>
> Larry
>

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