Re: [CAD_CAM_EDM_DRO] G Code questions

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?

You don't mention your control, but I'll assume EMC. I don't believe you can
change
tool radius from within a program. but, you could make 6 entries in the tool
table
with the different artificial radius settings, and switch them in. You could
even make
this a parameter that was incremented each time through the program, so you
ran the program 6 times, and it used each offset in sequence.

>
> 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.

You could write a program to do this. You can't specify it in G-code.

Jon