[AG...] Posted April 17, 2025 Share Posted April 17, 2025 I am was wondering for any direction with this? I have many hole patterns that i have checked and they range between .0005"-.001" on position. The only thing that matters is the pattern not the outside of the plate. I am getting a drift from 0,0 to the end of plate on the last diameter taken. It starts out at nominal but is out of position .001" at the end? Thank you for any help with this, much appreciated. Link to comment https://qualityforum.zeiss.com/topic/23193-hole-diameter-patterns/ Share on other sites More sharing options...
[Ca...] Posted April 24, 2025 Share Posted April 24, 2025 Hello - Are you looking to do something like the best fit bore pattern where you are just checking the holes to themselves? Here's an example: https://portal.zeiss.com/knowledge-base?id=598722 Link to comment https://qualityforum.zeiss.com/topic/23193-hole-diameter-patterns/#findComment-130903 Share on other sites More sharing options...
[AG...] Posted April 24, 2025 Author Share Posted April 24, 2025 Please sign in to view this quote. Yes, thats exactly it. Best fit Bore Pattern is being used and the Gauss is the filter being used. I see the example that you have attached that says using Gauss is used for dialing in the machine process and the Minimum Error Best Fit and the View Tolerance Best Fit are the best to use for the pattern. I was always using the Gauss and maybe that is what is throwing off the diameters or floating off position. This is a Best fit/Functional hole pattern to itself. Link to comment https://qualityforum.zeiss.com/topic/23193-hole-diameter-patterns/#findComment-130909 Share on other sites More sharing options...
[DW...] Posted April 24, 2025 Share Posted April 24, 2025 Please sign in to view this quote. Please sign in to view this username. Are you able to verify your findings with another measurement system (like vision system etc)? What about your measurement aren't you confident about? Link to comment https://qualityforum.zeiss.com/topic/23193-hole-diameter-patterns/#findComment-130939 Share on other sites More sharing options...
[AG...] Posted April 29, 2025 Author Share Posted April 29, 2025 Please sign in to view this quote. I know that the CMM can hold .0005" hole position on a 36" flat plate from beginning to end. I have ran the same plate on the other CMM and it repeats measurements. I don't usually compare one to the other. When the operator uses the probe in the machine they get within .0002" at the end of pattern. This has been ongoing with bosses and why the CMM uses up all the tolerance end to end. I just feel that there is something i can do differently and i cant pinpoint it. Link to comment https://qualityforum.zeiss.com/topic/23193-hole-diameter-patterns/#findComment-131141 Share on other sites More sharing options...
[DW...] Posted April 29, 2025 Share Posted April 29, 2025 Please sign in to view this quote. Please sign in to view this username. Make your rotation a 3d line recalled from hole1 and hole2 and project that line to the top face and make sure the direction for rotation is correct (I am assuming +X). Last time you qualified the probe? Sigma values? Link to comment https://qualityforum.zeiss.com/topic/23193-hole-diameter-patterns/#findComment-131143 Share on other sites More sharing options...
[AG...] Posted April 29, 2025 Author Share Posted April 29, 2025 Please sign in to view this quote. That is how i have my Rotation set up. Thats another reason why im not getting that it is moving that much. I qualify 3 times a week, sigma value .00001" Link to comment https://qualityforum.zeiss.com/topic/23193-hole-diameter-patterns/#findComment-131145 Share on other sites More sharing options...
[DW...] Posted April 29, 2025 Share Posted April 29, 2025 Please sign in to view this quote. Please sign in to view this username. I thought you were using a non projected 2d line? Any possibility of shanking? Single points vs scanning? Link to comment https://qualityforum.zeiss.com/topic/23193-hole-diameter-patterns/#findComment-131147 Share on other sites More sharing options...
[To...] Posted April 29, 2025 Share Posted April 29, 2025 (edited) Technically, the 3d Line doesn't have to be projected to the top plane as it is ONLY controlling rotation about the Z axis. You can, if you want to but it won't change the results. Edited April 29, 2025 Link to comment https://qualityforum.zeiss.com/topic/23193-hole-diameter-patterns/#findComment-131149 Share on other sites More sharing options...
[Cl...] Posted April 29, 2025 Share Posted April 29, 2025 Has anyone suggested looping the BA? Link to comment https://qualityforum.zeiss.com/topic/23193-hole-diameter-patterns/#findComment-131151 Share on other sites More sharing options...
[AG...] Posted April 29, 2025 Author Share Posted April 29, 2025 Please sign in to view this quote. My apologies i am using a 3D Line for my rotation Link to comment https://qualityforum.zeiss.com/topic/23193-hole-diameter-patterns/#findComment-131153 Share on other sites More sharing options...
[DW...] Posted April 29, 2025 Share Posted April 29, 2025 Please sign in to view this quote. Please sign in to view this username. Correct. I do it out of habit in Calypso and other inspection software. 1 Link to comment https://qualityforum.zeiss.com/topic/23193-hole-diameter-patterns/#findComment-131159 Share on other sites More sharing options...
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