Re: [CAD_CAM_EDM_DRO] Re: what is POSTPROCESSOR? a fundamental question

I look at postprocess as the rules to convert DXF to G code to make it
compatible with the controller you are using.
Jim

----- Original Message -----
From: "Tim Goldstein" <timg@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Monday, March 03, 2003 11:26 PM
Subject: RE: [CAD_CAM_EDM_DRO] Re: what is POSTPROCESSOR? a fundamental
question


> Jerry,
>
> In the terms of a post think of machine specific as meaning controller
> specific. Mach1 and EMC understand a much broader range of Gcode than
> does say DeskCNC DOS. Unless you use the least common denominator
> approach you can not use the same G-code for both. The post processor
> will control the syntax and such used.
>
> Tim
> [Denver, CO]
> Sherline products at Deep Discount
> Mach1 & DeskCNC with credit card ordering
> www.KTMarketing.com/Sherline
> Now selling Visual Mill
>
>
> > -----Original Message-----
> > > In some cases a post processor can be more than a
> > translator from the
> > > CAM program's internal data format to a language that is machine
> > > specific.
> >
> > What are the characteristics of a machine that makes it
> > different from any other machine? That is if you have one
> > brand of 5-axis machine and another brand of 5-axis machine
> > and both use stepper motors and stepper drivers, where are
> > the differences that constitute machine specificity with
> > regard to a post processor?
> >
> > I've been trying for at least 2 years to figure out what a
> > post processor does and have had no joy. Fred Smith has come
> > the closest, but the explanation is still too generic and ambiguous.
> >
> > > In case you haven't given it much thought, surfacing with a
> > ball nose
> > > cutter can be inefficient.
> >
> > Inefficient? I'd call it rediculous to suggest doing it,
> > although I see your point in choosing this as an example.
> >
> > So far, no one on this list has explained what a post
> > processor actually does; I've asked at least two times in the
> > past 2 years about post processors.
> >
> > So let me ask a specific question starting from the machine end.
> > If you have a Sherline and a Taig mill and each are driven
> > with size 23 stepper motors of the same brand and lot number,
> > then how is a post processor for each different? Probably
> > not different.
> > So lets say that both machines have steppers driven via Gecko
> > drives. Does that change anything? Probably not. So, say
> > the Sherline has Gecko drives and the Taig has Xylotec
> > drives. Does that change anything? What I am after is the
> > point at which the machines become different and why?
> >
> > Sorry, Doug, to use your post as a vehicle for these questions.
> > But it was handy :-)
> >
> > JerryK
> >
> > Addresses:
> > FAQ: http://www.ktmarketing.com/faq.html
>
>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html
> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com
>
> Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
> List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...,
timg@...
> Moderator: pentam@... indigo_red@... [Moderators]
> URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
>
> OFF Topic POSTS: General Machining
> If you wish to post on unlimited OT subjects goto:
aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it if
you have trouble.
> http://www.metalworking.com/news_servers.html
>
> http://groups.yahoo.com/group/jobshophomeshop I consider this to be a
sister site to the CCED group, as many of the same members are there, for OT
subjects, that are not allowed on the CCED list.
>
> NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM.
DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
> bill
> List Mom
> List Owner
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>