Re: [CAD_CAM_EDM_DRO] Re: Interface. Gauging interest.

Hi Chris,

I think I said I didn't expect it change any time soon. I said the RS274NGC
spec is a piece of crap. It is obviously from a time when most CNC code was
written by hand, like the days when my dad wrote financial programs in
assembly language. It is full of constructs supporting things that are
largely irrelevant now, like alternate coordinate systems for array
machining, automatic tool radius compensation, etc. G-Code as a convention
(i.e. G0 G1, etc.) is as good as any equivalent, but the collection of
capabilities is mostly obsolete because most of what was created to simplify
manual G-Code writing is no longer necessary with all the automatic code
generators already available. Whoever produces the desired results in the
cheapest, easiest manner will ultimately win, tradition notwithstanding.
--
Phil Mattison
http://www.ohmikron.com/

----- Original Message -----
From: lcdpublishing <lcdpublishing@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Wednesday, May 17, 2006 5:31 AM
Subject: [CAD_CAM_EDM_DRO] Re: Interface. Gauging interest.


> Hi Phil,
>
> Not sure what you are basing this opinion on, but, don't expect RS274
> (or simply put, G-Code programming) to go away. The most complex
> shapes that are machined today are done with G-codes on ordinary CNC
> machines all over the world.
>
> The G-Code method of programming has been around since the beginning
> of CNC, and will remain there, probably forever. There really isn't
> anything lacking with it, nor is there anything that can't be machined
> with it.
>
> There have been a number of attempts over the years to "change the
> world", most have failed, some have done okay. For example, at one
> point in time, it was thought that programming on the shop floor was
> the best way to get things done. During that phase, control mfgs. came
> out with various "Conversational" controls which were somewhat of a
> CAM system on top of the basic G-Code interpreting control.
>
> While this method of programming is still around and still applicable
> in short-run shops, production shops frown on it as being very
> inefficient. I mean really, you have a $150,000.00+ machine tool
> being used as a $5,000.00 CAM system.
>
> As to the various flavors of G-Code programming, there have been many
> attempts to change and it seems as though every control mfg puts their
> own little spin on it. But it's still the basic G-Code and cartesian
> coordinate system that gets the work done on machine tools.
>
> So, while you may think it is "Crap", the leaders in the machine tool
> industry put their money on G-Code programming as THE method of
> programming CNC machines.
>
> Don't expect it to change anytime soon.
>
> Chris
>
>
>
>
>
>
>
> > After a careful reading of the various flavors of RS274 it looks to
> me like
> > RS274NGC is pretty much an outdated piece of crap when it comes to
> machine
> > control, surviving only by virtue of familiarity and inertia. Not
> that I
> > think it is going away any time soon, but it certainly doesn't look
> like
> > golden handcuffs if you're interested in the general motion-control
> market.
> > I suspect it may not really have much of a strangle-hold on the
> hobby CNC
> > market either, since that will have many new-comers if it is in fact
> growing
> > rapidly.
>
>
>
>
>
>
>
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