Re: [CAD_CAM_EDM_DRO] Re: Newbie - Z-axis slipping

Hi,

Is the Z axis losing steps because you have the feed to high?

Regards,

Terry

> Is the drill being pushed back into the chuck
>
> jmosufsen <jmosufsen@...> wrote: --- In

CAD_CAM_EDM_DRO@yahoogroups.com, "Janice"

> wrote:
> > I'm brand new, self taught on my CNC router/engraver. I am
> > currently using a single drill point function where I am drilling
> 30-
> > 90 holes per part, at a precise depth of 0.043. I am losing depth
> > starting at about hole 25, and losing up to .030 worth of depth
> over
> > the course of the remaining holes. Am I expecting an unreasonable
> > level of precision, or are there some explanations for why a Z-axis
> > would lose depth? Thanks in advance!
>
> Chances are pretty good that your depth loss is due to thermal
> effects (e.g., thermal expansion). Even stiff, heavy-duty industrial
> CNC machines need to have their offsets readjusted after they warm up
> or after they've been running for a while.
>
> Jesse