RE: [CAD_CAM_EDM_DRO] G Code questions

It's the same arc done over 6 times, then rotate the part 60 degrees around
the Z axis and do another arc 6 times. I do need the radius to change as
the cutter increments .003 so shifting the Z axis won't work. I'm using a
ball shaped cutter.

Where can I find a sample of a sub-routine program that will run on EMC? I
can't find any documentation that shows the proper way to do this.

Thanks.

Ethan


-----Original Message-----
From: Alan Marconett KM6VV [SMTP:KM6VV@...]
Sent: Thursday, August 09, 2001 1:31 PM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: Re: [CAD_CAM_EDM_DRO] G Code questions

Hi Ethan,

Sounds like you might be programming by hand? I don't know what your
part looks like, but I take a stab at your question. Are your arcs
connected together, possibly with linear sections, such that there is a
"contour" or continuous (more or less) path around/through all of them?
I'd suggest putting one "contour" in a subroutine, called 6 times;
dropping Z by .003 each time.

Sounds like you've come to the right place to me!

Alan KM6VV


Ethan Vos wrote:

>
> I need to cut and arc of about 55 degrees with 4 or 6 passes of .003

each.

> There are six of these arcs per part, so 36 passes.
>
> Is there a repetitive cycle that will do arcs?
>
> If not, I think it would be possible to redo the same arc 6 times, but
> decrease the tool radius compensation by .003 to get the desired result.

Is

> there any way to do this with sub-programs and counters rather than

writing

> the same code 36 times?
>
> Can I program using start angle, end angle, radius and center point (0,0)
> rather than end points? I have the angles but not the positions and I

want

> to fool with the angles. It would be a lot more complicated for me to use
> end points because of all the extra calculations.
>
> And last, but not least, is this the proper forum for these questions, or
> is there another list I should belong to?
>
> Thanks.
>
> Ethan

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