Re: [CAD_CAM_EDM_DRO] tool size > hole dia

--- On Mon, 4/4/11, ebiz_59 <chuckm@...> wrote:

> From: ebiz_59 <chuckm@...>
> Subject: [CAD_CAM_EDM_DRO] tool size > hole dia
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Date: Monday, April 4, 2011, 12:36 PM
> OK, I'm using some MACH wizards - cut
> circle and shapes.  I tried using a .312 mill, spec'd a
> .312 radius and got an error saying that the tool dia was
> larger than the hole dia.  So I changed to 0.188 dia
> tool and got the same error.  Then I think I finally
> changed to a 0.125 dia and was finally able to generate
> Gcode.  What am I doing wrong? Not feeling very smart
> here:o)) Chuck
>
>
>

Chuck,
It has to do with the lead in move needed to do a cutter offset.
(cutter compensation)
To offset to an inside circle, the cutter will start further inside the circle, then move to the desired path to the actual start of the cut.

Cutter compensation offsets the cutter 1/2 its diameter to allow the part to finish at the correct dimension.

Steve