RE: [CAD_CAM_EDM_DRO] Relation of a DRO to a CNC modification of a machine?

Gary:

I built my ShumaTech DRO-350 for my Shoptask Eldorado, while waiting around
to get into CNC. The day I finished installing it, I got a great deal on
stepper motors, and, well, the rest, as they say, is history.

Now I have a full CNC setup, along with the DRO, on the machine. I find that
it is most useful for "checking" for lost steps or other inaccuracies. It
gives me peace of mind-that is, if I remember to zero the DRO when I change
my zero in Mach2!

You don't NEED limit switches or reference (home) switches, but they are a
good way to make sure of where you are. I have none yet, but I do plan to
install them "as soon as I get around to it".

Andy Wander
Verrex Corporation


-----Original Message-----
From: gfull [mailto:gafaw@...]
Sent: Monday, September 27, 2004 2:30 PM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: [CAD_CAM_EDM_DRO] Relation of a DRO to a CNC modification of
a machine?

I have ordered a 3-1 machine with installed DRO. My question is
this...as I fully intend to install a CNC modification to the
machine...

1) Is there any benefit in having the DRO other than for any manual
machining I may also do?

2) Does the DRO offer any feedback to the CNC system?

3) Will I need limit switches to establish an absolute position for
the CNC controller?

I plan on using the Camtronics stepper setup on the machine.

Many thanks in advance.
Gary