Re: [CAD_CAM_EDM_DRO] Re: Re: Can CNCPro users provide some input? - cutter comp

Smoke,

I have Fast Cad, Easy Cad. What is quick cad, and can you tell me a little
more about it?

Tom

----- Original Message -----
From: Smoke <gordonr@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Wednesday, March 21, 2001 10:44 PM
Subject: Re: [CAD_CAM_EDM_DRO] Re: Re: Can CNCPro users provide some
input? - cutter comp


> If you happen to have Quick CAD you'll find "computing" the location of
the
> cutter start postion as it goes into comp a breeze...the program
calculates
> it for you...to whatever degree of accuracy you need.
>
> Smoke
>
>
>
> >
> >Alan
> >
> >There is a page on LinuxCnc.org about the way the EMC does comp. Jon E
> >also has a page on his wusl site.
> >
> >There are several ways, including arcs, that you can approach the comp
> >offset. I did some experiments while writing the handbook comp page and
> >found that if you know the offset and the start of cut position in
advance
> >of the g42/43, or compute it some way, and use that info to move to the
> >start position, you can begin comp right where you want to cut. The
only
> >thing that the EMC cares about is that you not gouge the surface that you
> >are comping away from during the approach. It computes a possible
> >gouge to some incredible degree of accuracy so the start position math
has
> >to be good.
> >
> >From: Alan Marconett KM6VV <KM6VV@...>
> >
> ><s>I've heard that the controller must have straight line enter and
exits,
> >>to give it time to switch into/out of comp. I really haven't much of an
> >>Idea how it works, although I can see it simply as an offset in the CAD.
> >>I'd like to hear/understand more about it.
> >
> >If you read a bit of c c++ you can look at the source code that Tom
Kramer
> >wrote for the emc. These routines are very well documented.
> >
> >Ray
> >
> >
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