RE: [CAD_CAM_EDM_DRO] Re: Dimensions, 2D, 2.5D, 3D

If 3D is moving all three axis simultaneously then what do you call moving
X,Y,Z and A all together, 4D?

John Guenther
Sterling, Virginia

> -----Original Message-----
> From: Robert Campbell [mailto:bob@...]
> Sent: Tuesday, August 27, 2002 10:34 AM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: Re: [CAD_CAM_EDM_DRO] Re: Dimensions, 2D, 2.5D, 3D
>
>
> JJ,
>
> Most cnc machines that you will see people using on this list can do 3D.
>
> The limit is the software. I use a high end cadcam package
> called AlphaCam.
> The midrange version can only do 2.5D machining. By that I mean it can
> generate G code for any depth of the Z axis, put only one depth for any
> operation. For example if I am going to cut out a part using 3/4"
> red oak in
> three passes, the Z axis depth is set to cut the first path at .25 inched,
> followed by a pass at .5 inches and the last pass at .75 inches.
>
> I hope that this helps.
>
> Bob Campbell
>
> ----- Original Message -----
> From: "doug98105" <dougrasmussen@...>
> To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> Sent: Tuesday, August 27, 2002 7:22 AM
> Subject: [CAD_CAM_EDM_DRO] Re: Dimensions, 2D, 2.5D, 3D
>
>
> > JJ,
> >
> > 2D is as you understand it to be.
> >
> > 2.5D & 3D as related to CNC machines appear to have no firm
> > definitions. From years ago I understood 2.5D to mean the machine
> > could move all 3 axes simultaneously, but only in a linear fashion.
> > 3D meant the machine could move all three axes simultaneously while
> > moving in a circular path. Helical interpolation (as in milling a
> > thread) would be a simple example of a 3D move.
> >
> > Per my understanding of these definitions a machine rated as 2.5D is
> > virtually unlimited in it's ability to surface workpieces in 3
> > dimensions as long as the cutter path is made up of straight line
> > segments.
> >
> > In the previous list discussion of this topic I found my definitions
> > do not agree with those of some other list members.
> >
> > Doug
> >
> >
> >
> > --- In CAD_CAM_EDM_DRO@y..., "JJ" <jj5412@e...> wrote:
> > > This is a basic question, but could someone explain 2D, 2.5D, 3D?
> > >
> > > I assume 2D would work like a plotter. Moves in X and Y, with the
> > tool
> > > going up and down (or on and off) to fixed points.
> > > 2.5D and 3D I don't understand. Is 2.5D "profiling"? I assume that
> > means
> > > X, Y and Z axes that can move to any position, but isn't that 3D
> > also?
> > > Or does 3D incorporate 4 or more axes?
> > >
> > > ADVthanksANCE,
> > > JJ
> > >
> > > Be Kind, Be Careful, Be Yourself
> >
> >
> > Addresses:
> > FAQ: http://www.ktmarketing.com/faq.html
> > FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> >
> > 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 as 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........
> >
> > 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@...
> > Moderator: jmelson@... timg@... [Moderator]
> > URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
> > bill,
> > List Mom
> > List Owner
> >
> >
> >
> > Your use of Yahoo! Groups is subject to

http://docs.yahoo.com/info/terms/

>

Addresses:
FAQ: http://www.ktmarketing.com/faq.html
FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/

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 as 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........

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@...
Moderator: jmelson@... timg@... [Moderator]
URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
bill,
List Mom
List Owner



Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/