-----Original Message-----
From: Jon Elson [mailto:jmelson@...]
Sent: Sunday, June 06, 1999 12:39 AM
To: CAD_CAM_EDM_DRO@...
Subject: Re: [CAD_CAM_EDM_DRO] Linux vs. DOS
Tim Goldstein wrote:
From: "Tim Goldstein" <timg@...>
I finally have made my first item using EMC!!!
If you want to check it out you can see it on my website at
Very cute! You should send one to Fred Proctor! I think it
would look nice on his desk!
<snip>
I am planning on sending this one to Fred. I don't know what I would do with
it, but I thought Fred might enjoy the first item cut on a stepper machine
driven by EMC.
-snip-
Hmm, you must have your encoders hooked up. What you can do is
build a 'demo' version of EMC, that has simulation code rather than
motion hardware code. In fact, you should have these programs and
scripts on your system. It will give you a quick check of a program,
but you'll still have the same problem of identifying WHERE the error
is. Fred is supposed to be working on a major revamp of this whole
area.
Actually, I don't even have any wires hooked to the encoders!! To make it a
little more strange, all that is wired to the parallel port is the limit
switch and the X, Y, and Z step and direction.
What are the scripts I should be looking at for the simulation version?
While it is not perfect it will be faster than going through a 500 line
program a bunch of times at a MAX_VELOCITY of 20 ipm!!!
-snip-
Yes, the smooth blending of any move into the next move, whether linear,
arc or helical, in any of the 3 planes, is tough enough that I shied away
from rolling my own CNC for exectly that reason. That's why a group
of guys spent a couple of years figuring all this out at
taxpayer's expense!
Next time you pay your taxes, remember that that is also funding the
great guys like Will Shackleford and Fred Proctor who beat this path
through for us!
Let me think, a real time CNC package that can do this type of blending
would probably set me back 5 - 10K. So, I'll just pretend I bought the
software and got off scott free from federal taxes this year. Boy, does this
feel nice <bg>
Tim
[Denver, CO]
P.S. Don't you or Matt sleep?
