Re: [CAD_CAM_EDM_DRO] Question Re: Work Offsets

Tom,
"G0 X0.000 Y0.000 Z0.000", the tool moves to the workpiece?
try adding a G92 in the above line.
I always move to my X and Y position first then read a height file to move
down in Z.
remember Z 0 for work is not the same as machine home Z 0
Larry

----- Original Message -----
From: "Tom Benedict" <benedict@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Thursday, June 12, 2003 3:41 PM
Subject: Re: [CAD_CAM_EDM_DRO] Question Re: Work Offsets


> Ok, let me put this question another way:
>
> I am generating absolute coordinate G-code (i.e. if I do a "G0X1.0"
> followed by a "G0X0.0", I expect to be at x=0).
>
> I am using an edge finder to set my workpiece (0,0,0) point. In this
> coordinate frame, z=0 has the tool touching the top of the workpiece (so
> all negative Z coordinates are inside the material, and positive Z
> coordinates are above it.) In this coordinate frame, the centerline of
> the tool is lined up with the lower left corner of the material.
>
> What steps do I need to perform so that when I reach a line in my program
> that says> (0,0,0) point?
>
> Tom
>
> On Thu, 12 Jun 2003, Tom Benedict wrote:
>
> > On Thu, 12 Jun 2003, Fred Smith wrote:
> >
> > > --- In CAD_CAM_EDM_DRO@yahoogroups.com, Tom Benedict <benedict@h...>
> > > wrote:
> > > > On Thu, 12 Jun 2003, Fred Smith wrote:
> > > >
> > > > > --- In CAD_CAM_EDM_DRO@yahoogroups.com, "inetd_conf"
> > > <benedict@h...>
> > > > Instead what was happening was it was plunging
> > > > straight into the work while moving to what it thought was (0,0,0),
> > > even
> > > > though I'd set (0,0,0) to be the current position. It's like it
> > > totally
> > > > ignored the offsets I'd given it, and tried to drive the tool down
> > > to the
> > > > mill table (the absolute coordinate's z=0 position)
> > > >
> > >
> > > Which is the mistake that I am trying to point out to you. Your
> > > absolute z=0 should be at the maximum raised Z position NOT somewhere
> > > inside your vise.
> >
> > I'd gladly set it there, but the only way I've found to change the
> > absolute coordinate frame is to move to the position I want to be 0,0,0,
> > exit EMC, and restart. I know I'm probably missing something, but I
have
> > yet to figure out how to change the absolutes. Right-clicking on an
axis
> > and setting it to zero only sets an offset.
> >
> > Tom
> >
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> > http://groups.yahoo.com/group/jobshophomeshop I consider this to be a
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subjects, that are not allowed on the CCED list.
> >
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>
> OFF Topic POSTS: General Machining
> If you wish to post on unlimited OT subjects goto:
aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it if
you have trouble.
> http://www.metalworking.com/news_servers.html
>
> http://groups.yahoo.com/group/jobshophomeshop I consider this to be a
sister site to the CCED group, as many of the same members are there, for OT
subjects, that are not allowed on the CCED list.
>
> NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM.
DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
> bill
> List Mom
> List Owner
>
>
>
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>