MMR requirement - hole

[[Pe...]]

Hello everyone,

could someone please explain the difference between an extracted surface and an associated element in an MMR condition?

I’m trying to apply an MMR condition to a cylindrical hole, but I’m not sure which option I should choose.

It would also be great if you could show how you create it yourselves.

Thank you very much for any opinions and help.

[[Mi...]]

Hello, 
           I would start with the tech guide on position checks, if you have not already done so. 

https://techguide.zeiss.com/en/zeiss-inspect-2026/article/cmd_inspection_check_position.html

Tolerated element

You can choose whether you want to use an Extracted surface or an Associated element.

•  Extracted surface
  If you use this option, the software computes the material requirement based on the envelope of the element.
•  Associated element
  If you use this option, the software computes the material requirement based on the derived element, for example:
  • Center axis
  • Center plane
  • Center line
  • Center point

This option enables you to use bonus tolerances. In the bonus tolerance concept, parts of dimensional tolerances that are not used are applied as a bonus. The computation of the bonus tolerance is a method used in the ASME standard. Using bonus tolerances therefore does not conform to the ISO standard. To get results that conform to the standard, you must choose ASME Y14.5 in the drop-down list under Standard.