Re: Cutting an arc help G2/G3?

If the outer edge of the ring is 12" and the part is 1" wide,
wouldn't the inner edge of the ring be an 11" circle?

George

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "John Guenther"
<j.guenther@v...> wrote:

> George,
>
> By the way, if "2.5" long piece cut out of a 12" ring that is 1"

wide" is

> true, then you are talking about a 12" circle and a 10" circle if

the part

> really is 1" wide.
>
> John Guenther
> 'Ye Olde Pen Maker'
> Sterling, Virginia
>
> > -----Original Message-----
> > From: gglines1 [mailto:gglines@c...]
> > Sent: Tuesday, June 24, 2003 14:55 PM
> > To: CAD_CAM_EDM_DRO@yahoogroups.com
> > Subject: [CAD_CAM_EDM_DRO] Cutting an arc help G2/G3?
> >
> >
> > I have to cut a small workpiece with a curve. The workpiece

will be

> > 2.5 inches long, 1" wide and 1/2" thick. The long end of the
> > rectangle needs to be cut in an arc to match a 12" circle, the
> > shorter inside arc to match an 11" circle. Hard to describe,

think

> > of a 2.5" long piece cut out of a 12" ring that is 1" wide.
> >
> > Assuming I start with a workpiece that is a rectange 2.5" long

by 1"

> > wide, how would I program the arc cut? I can see programming a
> > circle and letting the machine make a 12" revolution, but that

would

> > be really slow. I'm not sure how to program just the part of

the arc

> > that I need.
> >
> > Thanks,
> >
> > George
> >
> >
> >
> > (FYI: My controller software (Microkinetics Millmaster Pro)
> > recognizes I and J parameters but not the R parameter with G2/G3)
> >
> >
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