Re: [CAD_CAM_EDM_DRO] Newbie - Z-axis slipping

hi,

My guess is, that you are loosing steps on Z downwards moving, and this
is accumulating during the work.

vajk

Dave Fisher wrote:

> Could be your work surface is not flat ?
> are the problem holes always in the same area ?
>
> Or your gantry / pantograph is not at absolute right angles to the
> worksurface.
>
> Easy test for all this - just clip a dial gauge to your Z axis
> and move it around the table - keeping a good eye on the readings.
>
> Rgds
>
> Dave Fisher UK
>
>
> -----Original Message-----
> From: Janice [mailto:bigforkshop@...]
> Sent: 30 January 2004 19:57
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: [CAD_CAM_EDM_DRO] Newbie - Z-axis slipping
>
>
> 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!
>
>
>
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