CAD CAM EDM DRO - Yahoo Group Archive

Re: How to go from 2.5 D to real 3 D ??

on 2001-11-23 16:49:49 UTC
Thanks Rab,

That's along the lines of what I was wondering. I'm not sure I need any
truly off axis arcs right now, but I can see that rotating arcs (as Doug
said?) could make it easy to cut something like a hemispherical shape.
The site is interesting, Don't know if I could afford the software!

Have you heard of any Gcodes to rotate a plane? Or how other planes
(besides G17,18,19) can be specified to a controller?

Alan KM6VV

rab@... wrote:
>
> All,
>
> Northwood Designs whose site I've just found, discuss this in their
> technical White Paper at:
> http://www.nwdesigns.com/Tech_paper.htm
>
> To quote:
> "Arcs may be fit in one of three methods: 1) relative to the standard
> orthogonal planes (XY,XZ,YZ). 2) relative to any rotation of the
> standard orthogonal plane. 3) to completely arbitrary planes (3D
> arcs). Almost all controls will machine arcs using the first method,
> some controls will allow method number 2, and a few controls are able
> to machined true 3D arcs. (*note- a 3D arc is not a helix)."
>
> They actually have a program that converts a file comprising of many
> short linear moves into arc movements or NURBS curves for controllers
> that have difficulty with high resolution files.
>
> Their site has a couple of demos and info on the subject, well worth
> a visit.
>
> Hope this helps,
> Rab
>
> > We do plenty of arcs in XY plane (G17), and perhaps some do arcs in
> XZ
> > or YZ (G18, G19) as well. As far as I've learned, arcs must be in
> one
> > of these planes, unless line segments are used to generate an arc.
> >
> > Are there controllers (and CAD programs) that can generate true
> arcs in
> > other then these defined planes? I can see how to draw an arc in
> CAD,
> > and then rotate it in an axis. I don't recall any Gcodes (NIST,
> RS274)
> > that hint at a way to revolve, or define a plane in either then the
> > mutually perpendicular planes. I have no idea "how they do it".
> >
> > So far, my CNC needs/interests have been met by "edged" surfaces. I
> > anxious to experiment with "water line" cutting, and smooth
> contours.
> >
> > Alan KM6VV

Discussion Thread

tom.kay@n... 2001-11-21 12:29:11 UTC How to go from 2.5 D to real 3 D ?? Michael Milligan 2001-11-21 12:50:54 UTC RE: [CAD_CAM_EDM_DRO] How to go from 2.5 D to real 3 D ?? CL 2001-11-21 13:59:36 UTC Re: [CAD_CAM_EDM_DRO] How to go from 2.5 D to real 3 D ?? dougrasmussen@c... 2001-11-21 19:15:29 UTC Re: How to go from 2.5 D to real 3 D ?? Jon Elson 2001-11-21 22:01:49 UTC Re: [CAD_CAM_EDM_DRO] How to go from 2.5 D to real 3 D ?? IMService 2001-11-22 08:59:43 UTC Re: Re: How to go from 2.5 D to real 3 D ?? Gail & Bryan Harries 2001-11-22 09:27:29 UTC RE: How to go from 2.5 D to real 3 D ?? dougrasmussen@c... 2001-11-22 10:14:55 UTC Re: How to go from 2.5 D to real 3 D ?? IMService 2001-11-22 16:19:33 UTC Re: RE: How to go from 2.5 D to real 3 D ?? IMService 2001-11-22 16:37:26 UTC Re: Re: How to go from 2.5 D to real 3 D ?? Chris L 2001-11-22 17:08:21 UTC Re: [CAD_CAM_EDM_DRO] Re: Re: How to go from 2.5 D to real 3 D ?? rab@r... 2001-11-23 05:08:01 UTC Re: How to go from 2.5 D to real 3 D ?? Art Fenerty 2001-11-23 09:40:32 UTC Re: [CAD_CAM_EDM_DRO] Re: How to go from 2.5 D to real 3 D ?? dougrasmussen@c... 2001-11-23 10:09:01 UTC Re: How to go from 2.5 D to real 3 D ?? Art Fenerty 2001-11-23 10:26:05 UTC Re: [CAD_CAM_EDM_DRO] Re: How to go from 2.5 D to real 3 D ?? Tim Goldstein 2001-11-23 11:05:58 UTC OT: Phone for Command Air? wanliker@a... 2001-11-23 11:36:05 UTC Re: [CAD_CAM_EDM_DRO] OT: Phone for Command Air? Smoke 2001-11-23 11:50:10 UTC Re: [CAD_CAM_EDM_DRO] OT: Phone for Command Air? Tim Goldstein 2001-11-23 12:11:41 UTC RE: [CAD_CAM_EDM_DRO] OT: Phone for Command Air? Fred Smith 2001-11-23 13:04:55 UTC Re: How to go from 2.5 D to real 3 D ?? Alan Marconett KM6VV 2001-11-23 13:41:19 UTC Re: How to go from 2.5 D to real 3 D ?? Art Fenerty 2001-11-23 13:49:22 UTC Re: [CAD_CAM_EDM_DRO] Re: How to go from 2.5 D to real 3 D ?? Alan Marconett KM6VV 2001-11-23 14:40:22 UTC Re: How to go from 2.5 D to real 3 D ?? rab@r... 2001-11-23 15:13:55 UTC Re: How to go from 2.5 D to real 3 D ?? Matt Shaver 2001-11-23 16:37:35 UTC Re: [CAD_CAM_EDM_DRO] Re: How to go from 2.5 D to real 3 D ?? Alan Marconett KM6VV 2001-11-23 16:49:49 UTC Re: How to go from 2.5 D to real 3 D ?? Chris L 2001-11-23 16:50:21 UTC Re: [CAD_CAM_EDM_DRO] Re: How to go from 2.5 D to real 3 D ?? Chris L 2001-11-23 17:13:49 UTC Re: [CAD_CAM_EDM_DRO] Re: How to go from 2.5 D to real 3 D ?? Fred Smith 2001-11-23 17:22:06 UTC Re: How to go from 2.5 D to real 3 D ?? Art Fenerty 2001-11-23 19:39:41 UTC Re: [CAD_CAM_EDM_DRO] Re: How to go from 2.5 D to real 3 D ?? Jon Elson 2001-11-23 21:19:28 UTC Re: [CAD_CAM_EDM_DRO] Re: How to go from 2.5 D to real 3 D ?? dougrasmussen@c... 2001-11-23 21:30:21 UTC Re: How to go from 2.5 D to real 3 D ?? Chris L 2001-11-23 22:23:35 UTC Re: [CAD_CAM_EDM_DRO] Re: How to go from 2.5 D to real 3 D ?? Chris L 2001-11-23 22:38:14 UTC Re: [CAD_CAM_EDM_DRO] Re: How to go from 2.5 D to real 3 D ?? IMService 2001-11-24 07:00:58 UTC Re: Re: Re: How to go from 2.5 D to real 3 D ?? Alan Marconett KM6VV 2001-11-24 10:18:11 UTC Re: [CAD_CAM_EDM_DRO] Re: How to go from 2.5 D to real 3 D ?? Alan Marconett KM6VV 2001-11-24 10:49:21 UTC Re: How to go from 2.5 D to real 3 D ?? Jon Elson 2001-11-24 21:58:20 UTC Re: [CAD_CAM_EDM_DRO] Re: How to go from 2.5 D to real 3 D ?? Jon Elson 2001-11-24 21:59:42 UTC Re: [CAD_CAM_EDM_DRO] Re: How to go from 2.5 D to real 3 D ??