RE: [CAD_CAM_EDM_DRO] AMAZING STUFF!

Terry,

I really don't think it was an original idea. EMC has had the ability to
handle a closed loop stepper since the Feb 2000 release. In checking the
archives of this list you can see that Matt Shaver and I discussed it on
June 1, 1999 and in a wish list for EMC over the past summer Dan Mauch also
said he would like to see closed loop steppers. Also, Alan up in Canada was
working on an external PIC based solution a while ago. Finally, if you check
out
http://www.microkinetics.com/motionc.htm
And look at the OptiTracker card you will see "The OptiTracker can be used
with MillMaster Pro for encoder feedback."

My point is, just from the little I know it looks like a frequently
discussed idea that has also previously been implemented by others and can
not be consider piracy.

Tim
[Denver, CO]

> -----Original Message-----
> From: james owens [mailto:wotisname@...]
> Sent: Saturday, March 11, 2000 11:17 AM
> To: CAD_CAM_EDM_DRO@onelist.com
> Subject: Re: [CAD_CAM_EDM_DRO] AMAZING STUFF!
>
>
> From: "james owens" <wotisname@...>
>
> Some time ago I proposed a system using DRO input to a CNC
> program for stepper motor control of workshop machinery. The idea
> was considered to have "No Merit" and not of commercial value. I
> proposed it as a means of using lead-screws that have some wear
> and still achieving an accurate CNC machining centre. I have
> continued to develop my thoughts and am close to achieving the
> required results. It has taken so long because it was necessary
> for me to start from scratch without the benefit of readily
> available components.
>
> Is this a case of parallel development or piracy. Don't get me
> wrong if this is piracy Dan has every right to produce this
> application but it would be nice to have been given a little recognition.
>
> Regards,
>
> Terry.