Hi Gene, I gave up on centering my cheap probe because it really isn't necessary. I don't need the probe to be concentric with the spindle if I know the offset. My procedure is:
- center a hole under the spindle. For a hole, I've created a fixture with a magnet holding a bearing. To center it, I put the right size drill rod in a collet in the spindle - Find the center of the hole with the probe and save the coordinates. - Now rotate the probe 180 degrees. To do that, I've added wings to my probe that contact a vertical rod on the side of my mill. - Find the center of the whole with the probe. The difference in the two readings represents twice the X and Y offsets of the probe. - Now when you use the probe, you can just subtract that offset from the actual measurement. I've written subroutines to do that and to save the offset values. I also have probing routines to do things like finding centers, finding edges, etc. Those routines are invoked by buttons on my pendant. Unlike Verser's routines all probing motions are "safe". By safe, I mean that all motions use the probing versions of motion so they stop when the probe hits something. (I bent my first probe using Verser's routines.) The probing routines know about the direction of the last motion directed by the pendant, so they probe in that direction. See: safe probe source <https://drive.google.com/file/d/1D7_BacRTk4LwG0izKLDASTxHSK0RL5nM/view?usp=sharing> Ken Kenneth Lerman 55 Main Street Newtown, CT 06470 On Sun, Oct 24, 2021 at 1:19 PM Gene Heskett <ghesk...@shentel.net> wrote: > On Sunday 24 October 2021 11:30:07 Feral Engineer wrote: > > > I use work with probe, but I am going to customize the routines a > > little to work the way I want them to and Andrew Beck I believe uses > > his probes. > > > > Phil T. > > The Feral Engineer > > > > Check out my LinuxCNC tutorials, machine builds and other antics at > > www.youtube.com/c/theferalengineer > > > > Help support my channel efforts and coffee addiction: > > www.patreon.com/theferalengineer > > > > On Sun, Oct 24, 2021, 11:01 AM andy pugh <bodge...@gmail.com> wrote: > > > On Sun, 24 Oct 2021 at 08:02, John Dammeyer <jo...@autoartisans.com> > > > > > > wrote: > > > > Is anyone using > > > > https://github.com/verser-git/probe_screen_v2 > > > > > > > > Any comments about it? > > > > > > About 50 pages of comments here: > > > > > > https://forum.linuxcnc.org/49-basic-configuration/29187-work-with-pr > > >obe?start=0 > > > > > > Verser also sells relatively inexpensive touch-probes: > > > https://vers.by/en/16-touch-probes > > I don't think its a verser product, but the plastic one I bought 5 years > ago, looks just like the right pix but without the usb connector, > straight wire into it. Despite many repeated attempts to adjust it, has > never come within 20 thou of making a repeatable finding. The plastic by > now is cracked like a century old china bowl and was already crazed when > it was shipped. Worthless when I paid nearly $200 for it several years > ago, and still worthless at whatever it is selling for today. I left an > unfavorable review and was threatened with a lawsuit for libel. > > Cheers, Gene Heskett. > -- > "There are four boxes to be used in defense of liberty: > soap, ballot, jury, and ammo. Please use in that order." > -Ed Howdershelt (Author, 1940) > If we desire respect for the law, we must first make the law respectable. > - Louis D. Brandeis > Genes Web page <http://geneslinuxbox.net:6309/gene> > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
