Renishaw Probe Accuracy Follow-up + Intro to Precision and Accuracy

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  • Опубликовано: 10 дек 2024

Комментарии • 33

  • @stuart99299
    @stuart99299 5 лет назад +17

    Thanks for taking the time to do that. That was very in depth. Appreciated

  • @alaskanvortex5673
    @alaskanvortex5673 4 года назад +3

    Showing the key presses is excellent. Very good explanation of precise and accurate. Thank you.

  • @LutherDesigns
    @LutherDesigns 5 лет назад +10

    Great video, loving the key presses on screen thank you!

    • @tarkka
      @tarkka  5 лет назад +2

      Great! Glad the key presses helped. Thanks for watching!

  • @Brrraaack
    @Brrraaack 3 года назад +2

    I have played around a awful lot with getting the renishaw as precise and accurate as possible. There is one important thing to be taken into consideration: the precision of the gauge ring and its accuracy. Its not round. The printed dimension is not 100% correct. Reference the inspection protocol for their measuring error. The best way I have found: fix the ring as flat as possible to the machine. make sure it can´t move. make sure its not distorted. Take work offset from ring. zero over ring and validate center as perfectly as possible (even now, with micron indicator it will be quite impossible to find a "perfect zero"). Zero machine on this spot. Now calibrate from exactly this zero point, in exactly same height where the indicator was zeroed. This method improved my measuring error a lot. After calibration it´s also advisable to measure several gauge rings right away to validate the calibration went correct. I even found small differences in precisely repeated calibration processes. And of course: never chase the last micron. :)

  • @Tachikomaster
    @Tachikomaster 3 года назад

    Nice video! Fast paced, without unnecessary ballast, with in-depth technicalities.

  • @bearcatproductions
    @bearcatproductions 4 года назад +1

    Thank you!!! Very straightforward and clear explanation

  • @steinarne79
    @steinarne79 5 лет назад +3

    What would be really awesome. Is a tutorial on how to program a probe routine for inspecting a part for position of 4 holes or something. Keep up the awesome videos

    • @tarkka
      @tarkka  5 лет назад +1

      We're working on a video on the GD&T position tolerance and I think this might fit well there. We have just the part to use as an example too. Thanks for the suggestion!

  • @jobkneppers
    @jobkneppers 3 года назад +1

    I use magnets to hold my caliper ring... Works great and doesn't damage your precision ring... Best, Job

  • @johnpgerrity
    @johnpgerrity 3 года назад +2

    Great video, just found your channel excellent work! One question, in this experiment the uncertainty is attributed to the probe, wouldn't it be more accurate to say this is the uncertainty of a probe in a Mini mill/system? Since errors in backlash, servo couplings, axis alignment etc all contribute to the recorded values?

  • @andrert2178
    @andrert2178 3 года назад

    If you don't have a perfect machine or vice , two things are important: Checking the ring for flatness after clamping. Checking the spindle for eccentricity.

  • @triiaxis6792
    @triiaxis6792 5 лет назад +2

    Thanks for the vid, subbed

  • @camcompco
    @camcompco Год назад

    i really love you vids, I subscribed and then saw that you have not posed in 2 years 😞

  • @JimmeeAnimAll
    @JimmeeAnimAll 3 года назад

    Another awesome video, thank You. I don't fully understand the proces but I assume You check widest dimension with that probe for calibration. But in order to work, it should start from exact middle of the circle. Any 0.00000x offset changes the length of x and y reading right ?

  • @bawtreerd
    @bawtreerd 9 месяцев назад

    Blu tac is good for securing ring gauge to table

  • @joshtryon1107
    @joshtryon1107 5 лет назад +1

    It would be nice to see what the ring gauge measured on a CMM and compare that with the Haas probing system. Was the gauge really 1.99996?

    • @tarkka
      @tarkka  5 лет назад +4

      Yes, 1.99996 was the actual value on the certificate of calibration. Per the 10:1 rule, that number would have been obtained with a measuring instrument that could resolve at least to +/- .000001.

  • @Te4mUp
    @Te4mUp Месяц назад

    Wait how did you get the raw data with more than 4 decimal places?! Are you saying if my stock to leave of .0001" is not enough but .0002" is too much I can use my CAM software to add stock to leave of .000155"?!

    • @Te4mUp
      @Te4mUp Месяц назад

      Wait Fusion only outputs values to 4 decimal places, I'd need a new post processor... But that's insane I need to know how you got the raw data like that please

  • @ipadize
    @ipadize 3 года назад

    why doesnt haas orient the spindle when calibrating the touchprobe and when probing different angles?

  • @CAULEYJR
    @CAULEYJR 4 года назад

    Why does the probe tip kick out to the side like that, instead of moving to the center.

  • @calculeteman
    @calculeteman 5 лет назад +3

    use magnets to maintain the ring.

    • @tarkka
      @tarkka  5 лет назад

      Great idea! Thanks!

    • @johnthomas5166
      @johnthomas5166 3 года назад +1

      Or just a drop or two of superglue.

  • @Juxtaposed1Nmotion
    @Juxtaposed1Nmotion 5 лет назад +2

    Anyways, how do you know or how can you be certian you are actually calculating the Machines repeatability? I use a probe on a machine with a whole factor of magnatiude more, precision and accuracy; cylindrical grinder. We routinely hold tenths on postion using a probe during production. repeatability of machine is .00001. (Swiss made Studer CNC). Production would be scrap if our probe and machine couldnt hold tenths.
    You might have better results and infact anedocatly like I say, it is possible using a different method and more accurate tooling.
    edit:Hass say it can hold only
    0001 on position, renishaw claims in the millionths. Should have started there.

    • @tarkka
      @tarkka  5 лет назад +3

      Your machines are on a whole different level. Most swiss machines I have seen have glass scales on the axes. This machine definitely does not. Somebody else made a good point in another comment about thermal expansion. If the ball screw heats up 10 deg F, it'll expand by .00012 over that 2" range.

    • @Juxtaposed1Nmotion
      @Juxtaposed1Nmotion 5 лет назад +3

      @@tarkka Well thats what i am saying, you arent testing the Renishaw probes accuracy or precision anymore then you are the positioning accuracy and repeat-ability of the HASS machines,

    • @Dr_Petey_Wheatstraw
      @Dr_Petey_Wheatstraw 4 года назад +3

      @@accumach6454 although the vise was tightened on the T-nut so it might have been stiff enough for this order of magnitude.

  • @nihilisticman
    @nihilisticman 4 года назад +1

    Great video, but please also show equivalent metric values on screen as you speak.

    • @tarkka
      @tarkka  4 года назад +2

      Thank you, we aren't able to add it in as a card, but we will be cognizant of this in future videos.