Re: Cam track help!

Dan,

I would like a copy of your spreadsheet also. Not that I want to
mill sine waves, but I'm interested in what your algorithm is for
specifying feedrates on rotary axis projects using small moves.

Regards,
Ed Ferguson
eferg@...

--- In CAD_CAM_EDM_DRO@y..., "Dan Statman" <dan.statman@r...> wrote:
> Depends on how much resolution for the curve you want, but at the
sacrifice
> of many more starts and stops if you do not have constant velocity
> contouring. The reason it behaves oddly at the peaks is because
you are
> doing a tiny linear move coupled with a 1 degree angular move and
the
> feedrate does not know what to do. For the code I supplied Mark
William's,
> I calculate a specific feedrate for each step increment so that it
cuts
> smoothly.
>
> Would you like a copy of my spreadsheet?
>
> Daniel J. Statman, Statman Designs
> www.statmandesigns.com
>
>
> ----- Original Message -----
> From: "John Guenther" <j.guenther@v...>
> To: <CAD_CAM_EDM_DRO@y...>
> Sent: Wednesday, August 21, 2002 6:32 PM
> Subject: RE: [CAD_CAM_EDM_DRO] RE: Cam track help!
>
>
> > Dan,
> >
> > Ok, thanks that helps. Would there be anything gained by
recalculating it
> > at 0.5 degree or smaller increments instead of the 1 degree
increments? I
> > suppose I could do that and run it on the mill just to see how it
acts.
> > When I ran the original gcode I produced it acted a little
strange at the
> > peaks but seemed fine other wise.
> >
> > john
> >