Odd stylus failure - ever seen this?
Close
Login to Your Account
Results 1 to 15 of 15
  1. #1
    Join Date
    Dec 2008
    Country
    UNITED STATES
    State/Province
    Arizona
    Posts
    47
    Post Thanks / Like
    Likes (Given)
    8
    Likes (Received)
    10

    Default Odd stylus failure - ever seen this?

    Just happen'd to look at the probe in the carousel and it appeared the stylus was broke.
    Couldn't figure out why or how, nothing came close to it.
    I jogged the table around and found the ruby, it literately fell out of the stylus.
    I can't see much in the way of epoxy on the shaft.
    Maybe clean it with Acetone and super glue it, then calibrate it again?
    img_20210413_134301236.jpg

  2. #2
    Join Date
    Mar 2013
    Country
    UNITED STATES
    State/Province
    Oregon
    Posts
    2,175
    Post Thanks / Like
    Likes (Given)
    894
    Likes (Received)
    2761

    Default

    Hey, a case where Bondo could actually fix it!

    Yea, I would clean it and use some super glue, and see if she calibrates.

  3. #3
    Join Date
    Jul 2006
    Location
    Hillsboro, New Hampshire
    Posts
    12,675
    Post Thanks / Like
    Likes (Given)
    2893
    Likes (Received)
    8780

    Default

    I wouldn't use superglue, some will degrade with exposure to moisture. Use a high-quality epoxy, one meant for wet environments.

  4. Likes Totallyrc, mhajicek liked this post
  5. #4
    Join Date
    Jul 2012
    Country
    UNITED STATES
    State/Province
    Washington
    Posts
    3,371
    Post Thanks / Like
    Likes (Given)
    1373
    Likes (Received)
    1488

    Default

    Loctite would be my pick, something like 263 or equivalent.

    On second thought it depends on the fit, 263 likes a .003" gap. If it is much closer then go with a thread locker for press fits.

  6. #5
    Join Date
    Feb 2012
    Location
    California
    Posts
    1,573
    Post Thanks / Like
    Likes (Given)
    966
    Likes (Received)
    1769

    Default

    Got a local vendor for stylii?

    I'd glue in a pinch but would still replace it asap. Not worth it to scrap a part (if the ball falls off again) to save a few bucks.

    Keep this in the drawer as a last resort backup.

  7. Likes mhajicek, ElCrasho, Chris59 liked this post
  8. #6
    Join Date
    Apr 2013
    Country
    UNITED STATES
    State/Province
    Texas
    Posts
    293
    Post Thanks / Like
    Likes (Given)
    5
    Likes (Received)
    125

    Default

    I probably wouldn't bother, but if I did.. 3M 5200 epoxy.

  9. #7
    Join Date
    Dec 2008
    Country
    UNITED STATES
    State/Province
    Arizona
    Posts
    47
    Post Thanks / Like
    Likes (Given)
    8
    Likes (Received)
    10

    Default

    I ordered 2 from MSC Industrial before I even got on here, I just wanted to finish up this project it's running on.
    I re-centered it and calibrated it more as a practice run for when the replacement arrives.
    I thought I had a spare, I keep spares of all these little job stopping items, but I was wrong.
    I'll jump on the lathe and get some stuff done while I wait for it to arrive.

  10. #8
    Join Date
    Dec 2008
    Country
    UNITED STATES
    State/Province
    Arizona
    Posts
    47
    Post Thanks / Like
    Likes (Given)
    8
    Likes (Received)
    10

    Default

    Just an FYI in case anyone is looking, I came across a page on Mcmaster Carr, they carry a Ton of styli for probes, different lengths and rubi diameters, adapters and break stems. Sure they are typically more expensive, but they are quick.
    McMaster-Carr

  11. Likes Mtndew, Orange Vise liked this post
  12. #9
    Join Date
    Oct 2020
    Country
    UNITED STATES
    State/Province
    Missouri
    Posts
    24
    Post Thanks / Like
    Likes (Given)
    48
    Likes (Received)
    2

    Default

    If its just for a day or two, gorilla glue super glue is the go to. Definetly order more, they are cheaper than scrapping a part.

  13. #10
    Join Date
    Feb 2008
    Location
    MI, USA
    Posts
    977
    Post Thanks / Like
    Likes (Given)
    71
    Likes (Received)
    411

    Default

    I haven't had that happen, but I did have a 6mm ruby ball explode into several pieces probing a Z surface in a VMC.

    The shank was ceramic, so a bit surprised the tip was the thing to break. Probe didn't notice, just continued doing its thing.

  14. #11
    Join Date
    Jan 2007
    Location
    Flushing/Flint, Michigan
    Posts
    10,278
    Post Thanks / Like
    Likes (Given)
    590
    Likes (Received)
    8384

    Default

    If you have not broken the tip off a probe you do not have chips in your shoes....
    24 hour long set epoxy and order a new tip. No glue running the outside is main as it will become part of the ball.
    Even a run wiped away or weep may be a big problem so the stylus needs to be upside down during gluing.
    Bob

  15. #12
    Join Date
    Jan 2003
    Location
    Tel Aviv, Israel
    Posts
    670
    Post Thanks / Like
    Likes (Given)
    115
    Likes (Received)
    178

    Default

    Quote Originally Posted by dandrummerman21 View Post
    I haven't had that happen, but I did have a 6mm ruby ball explode into several pieces probing a Z surface in a VMC.

    The shank was ceramic, so a bit surprised the tip was the thing to break. Probe didn't notice, just continued doing its thing.
    This is quite common when probe is extensively used in Z axis direction. The force needed to trigger the OMP40-2 probe in X and Y direction is 0.5-0.9 Newton, while in Z direction - 5.85 Newton. Frequent Z axis use causes the ruby tip to break or "explode". It is recommended to use in such cases the tungsten carbide instead of ruby styli (A-5000-7670 with M-2085-0069 crash protection instead of A-5000-3709).

  16. Likes roamer liked this post
  17. #13
    Join Date
    Feb 2008
    Location
    MI, USA
    Posts
    977
    Post Thanks / Like
    Likes (Given)
    71
    Likes (Received)
    411

    Default

    Quote Originally Posted by PROBE View Post
    This is quite common when probe is extensively used in Z axis direction. The force needed to trigger the OMP40-2 probe in X and Y direction is 0.5-0.9 Newton, while in Z direction - 5.85 Newton. Frequent Z axis use causes the ruby tip to break or "explode". It is recommended to use in such cases the tungsten carbide instead of ruby styli (A-5000-7670 with M-2085-0069 crash protection instead of A-5000-3709).
    That is interesting.

    I fiddled with it and can actually feel it. Hadn't really thought of it before.

    It was an MP10 system, so I looked it up and it is 4.2N for Z. But that's still 1 pound of force on that little ruby.

  18. #14
    Join Date
    Nov 2006
    Location
    Jupiter, Florida
    Posts
    269
    Post Thanks / Like
    Likes (Given)
    327
    Likes (Received)
    22

    Default

    We broke a ruby tip last year. We ordered a new stylus but, to get by for a couple days, we made a titanium ball with a hole in it that we glued with medical grade epoxy (it was on hand). Indicated and re-calibrated. Worked fine but we did replace it when the new stylus came in. It's now a last ditch spare since we try to keep one stylus extra on hand for the two mills.

    Yeah yeah. Titanium. Only needed it to work for a day or two.

  19. #15
    Join Date
    Mar 2016
    Country
    UNITED STATES
    State/Province
    Illinois
    Posts
    866
    Post Thanks / Like
    Likes (Given)
    159
    Likes (Received)
    486

    Default

    The stylist are not that expensive, I would order a back up one and see if the vender will replace this one for you for free since it looks like a faulty tool.


Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •