hexagon logo
Register Sign in
  • Replies 69 replies
  • Subscribers 17 subscribers
  • Views 1670 views
  • Users 0 members are here
Options
Related

Calibration. Different results

FXSergiy
I greet you all, colleagues.
I have a small problem that tends to come and go when calibrating angles. I work with many styli and use a 9-slot magazine for this. Each stylus has about 10 different angle positions. When I did the calibration, two angles on different probes were out of tolerance. One probe has a CM25-2 probe and the other CM25-3. And at the same time, PSDMIS accepts the calibration result without asking the operator. The next day I did a similar calibration and the result was OK.And always out-of-tolerance angles equal to A90 or more than A90 It is very strange . I have been working in this mode for 3 years and there were no such problems. And this year it started. I check the probes visually and do the cleaning before each calibration the same way always. What could be the problem ?
Attached Files
  • in reply to JEFMAN
    OK. I will try this method. In touch...
  • the reason i choose not to help is that i honestly believe that russia deserves to be pressured in EVERY possible way to stop what they're doing. even if that means refusing to help a cmm programmer. maybe that cmm programmer will be mad at me or maybe that cmm programmer will redirect that frustration at their politicians and democratically force real change

    the sooner someone helps sirgiy...the sooner a company in russia becomes more successful which means they'll pay tax to the kremlin who will turn around and use that money to send 18 year old soldier children to murd3r ukranians...NOPE not interested in being a part of that chain of events sorry

    personally, i wish you all the best. professionally, i will help not help you until your gvt stops committing war crimes

    if anyone here wants to feel a certain type of way so be it. love you guys, even the bleeding heart libs, even you sergiy.
  • the reason i choose not to help is that i honestly believe that russia deserves to be pressured in EVERY possible way to stop what they're doing. even if that means refusing to help a cmm programmer. maybe that cmm programmer will be mad at me or maybe that cmm programmer will redirect that frustration at their politicians and democratically force real change

    the sooner someone helps sirgiy...the sooner a company in russia becomes more successful which means they'll pay tax to the kremlin who will turn around and use that money to send 18 year old soldier children to murd3r ukranians...NOPE not interested in being a part of that chain of events sorry

    personally, i wish you all the best. professionally, i will help not help you until your gvt stops committing war crimes

    if anyone here wants to feel a certain type of way so be it. love you guys, even the bleeding heart libs, even you sergiy.

    Hi Dan, it's nice to see your point of view, even if I disagree with it...
    You help a lot of people here who don't say where they come from...
    Maybe they are Russian, like Sergiy, or North Korean, Iranian or terrorist.
    Can you imagine someone not wanting to help you just because you're American, or because of your views on guns, or because they don't like your president (remember who was president of the United States in the past, maybe it wasn't always the best)?
    It's courageous for Sergiy to say where he comes from, in the current situation.
    I'm French, I didn't choose it, I'm not proud of it, but I'm not ashamed of it, and I'm sure it's the same for Sergiy.

    Just a thought!


  • Hi Dan, it's nice to see your point of view, even if I disagree with it...
    You help a lot of people here who don't say where they come from...
    Maybe they are Russian, like Sergiy, or North Korean, Iranian or terrorist.
    Can you imagine someone not wanting to help you just because you're American, or because of your views on guns, or because they don't like your president (remember who was president of the United States in the past, maybe it wasn't always the best)?
    It's courageous for Sergiy to say where he comes from, in the current situation.
    I'm French, I didn't choose it, I'm not proud of it, but I'm not ashamed of it, and I'm sure it's the same for Sergiy.

    Just a thought!

    If someone chooses to identify themselves to the group as being from a terrorist nation then I will choose to not help them, its as simple as that. Sorry Sergiy.

    I am an American. There will always be help for me when I need it because the rest of the world needs us to survive. I thank God every day that I was born here.


    PS I have no views on guns....just a god given right to possess them. The right to keep and bare arms shall not be infringed....period. Clear statement. No room for interpretation. Since YOU brought it up... If Sergiy's country had the ability to defend themselves maybe they wouldn't be ruled by commies. Ever think of thatSlight smile ?

    CMMs are a highly advanced machine that cost $$. In a country like Russia, it is almost 100% guaranteed that a company that owns one/employs programmers has state funded connections.



  • PS I have no views on guns....just a god given right to possess them. The right to keep and bare arms shall not be infringed....period. Clear statement. No room for interpretation. Since YOU brought it up... If Sergiy's country had the ability to defend themselves maybe they wouldn't be ruled by commies. Ever think of thatSlight smile ?



    Not god given right. You do have constitional right.

    The Second Amendment (Amendment II) to the United States Constitution protects the right to keep and bear arms. It was ratified on December 15, 1791, along with nine other articles of the Bill of Rights. In District of Columbia v. Heller (2008), the Supreme Court affirmed for the first time that the right belongs to individuals, for self-defense in the home, while also including, as dicta, that the right is not unlimited and does not preclude the existence of certain long-standing prohibitions such as those forbidding "the possession of firearms by felons and the mentally ill" or restrictions on "the carrying of dangerous and unusual weapons". In McDonald v. City of Chicago (2010) the Supreme Court ruled that state and local governments are limited to the same extent as the federal government from infringing upon this right.

    Anyways to each there own.
  • So, dear colleagues. I thank everyone for your opinions and the time you spend talking about no my topic. But please , respectfully , keep your political opinions to yourself . Just don't trash my forum with off-topic dialogues. Nobody asked you about politics here. If you don't want to help, just don't write anything and that's it.
    Thanks a lot .
  • So, dear colleagues. I thank everyone for your opinions and the time you spend talking about no my topic. But please , respectfully , keep your political opinions to yourself . Just don't trash my forum with off-topic dialogues. Nobody asked you about politics here. If you don't want to help, just don't write anything and that's it.
    Thanks a lot .

    I will write whatever I want. in america, you can do that as long as you do not infringe upon the rights of others. I understand that you do not have that same luxury. sorry if you don't like/agree with that. i would be happy to help you in the future once your country stops committing terrorism. good luck buddy


  • I will write whatever I want. in america, you can do that as long as you do not infringe upon the rights of others. I understand that you do not have that same luxury. sorry if you don't like/agree with that. i would be happy to help you in the future once your country stops committing terrorism. good luck buddy

    I'm just here for the comments:


  • I'm just here for the comments:
    {"data-align":"none","data-size":"medium","data-attachmentid":518362}

    i am eating popcorn in real life right now Slight smileSlight smileSlight smile
  • I greet you all, colleagues.
    I have a small problem that tends to come and go when calibrating angles. I work with many styli and use a 9-slot magazine for this. Each stylus has about 10 different angle positions. When I did the calibration, two angles on different probes were out of tolerance. One probe has a CM25-2 probe and the other CM25-3. And at the same time, PSDMIS accepts the calibration result without asking the operator. The next day I did a similar calibration and the result was OK.And always out-of-tolerance angles equal to A90 or more than A90 It is very strange . I have been working in this mode for 3 years and there were no such problems. And this year it started. I check the probes visually and do the cleaning before each calibration the same way always. What could be the problem ?

    I see what you mean. Those are some odd results. I see that the standard deviation looks really good for all angles, but somehow the probe radius deviation varies at different angles. It is like the results say that the CMM is very certain that the probe radius is different at different angles. That makes no sense.

    If the standard deviation were larger I would suspect that you have worn spots on your stylus or something is loose, but that is not the case.

    My next guess is that your SM25 module is wearing out, but based on the names of your probes, it looks like you are having the same problems with both a SM25-2 and SM25-3 module. If that is so, it would rule out the module as a problem.

    Maybe there is a problem with the SP25M probe body itself. Make sure the optical window is clean and use some cleaning putty to clean all the magnets and kinematic contacts. Something may be causing the modules to rock a bit when the probe is at an A90+ angle.

    It is also possible that your probe head is getting worn out at some angles. I don't have any suggestions to troubleshoot that other than to try a different probe head, but you probably just have one. Maybe you can at least check for loose fasteners.

    While you are at it, check that the qualification sphere has not come loose on it's mount. Also check all the probe/styli connections. Probably not the problem, but doesn't hurt to check.

    It might also give you clues to create a quick measuring routine to measure the qualification sphere with lots of hits using different probe angles. You can review the diameter results to check if you get different diameter measurements with different angles. Also, you can graph the roundness to see if the problem is just with certain hit vectors. That might reveal a problem.

    Good luck. I hope the problem is something easy/simple.

© 2024 Hexagon AB and/or its subsidiaries. Privacy Policy | Cloud Services Agreement