Re: [CAD_CAM_EDM_DRO] Need Zero Help!!

Hi Jon,

Well, looks like I'm using it wrong too. I really only use it this way!

After reading the "handbook" some more today, I figure G54 etc. ought to
be useful for fixtures. I just realized (finally understood) that G53
is for physical coordinates and G54, G55 etc. are for different
fixtures. So, if I figure out where to put home switches on the
Sherline mill, I can then note the fixture offsets (or where ever the
part is secured), and then always get back to it. At least I *think*
that's what somebody had in mind. I currently secure the part, set the
edges or reference point with an edge finder, and use "G92 X-.1" (as
you're describing) to set my zero reference (and similar for Y). Works
fine if the machine doesn't loose it, and I don't machine away the
reference edges! I'm still open to ideas!

G92 is for temporary adjustments??

Alan KM6VV


Jon Elson wrote:

>
> Alan Marconett KM6VV wrote:
>
> > Hi Ed,
> >
> > Have you tried a "G92 X0 Y0 Z0" MDI command?
>
> A bunch of people yelled at me for doing it this way. It seems that the
> G92 is good for offsetting a part from a fixture, or a second part from
> the first, or temporary change in coordinates.
>
> The easiest thing to do is to place the cursor over the axis to be changed
> and then hit the right mouse button. A dialog box should pop up that allows
> you to set the coordinates for that axis. You can, of course, set the coord.
> to .1, -.1 or some similar value to compensate for the radius of an edge finder
> or similar device.
>
> Jon
>
> >
> > Alan KM6VV
> >
> > EdFanta wrote:
> > >
> > > Hope I'm not the zero here. I got EMC up and running finally and cannot
> > > seem to figure out how to set the readouts to zero. If I'm edge finding
> > > the corner of my vise I need to set zero. It's probably so obvious that
> > > I can't see it. Thanks. Ed.
>