True Positions: Datum Systems without Material Modifier (MMC or LMC) not able to Move Together

[[Wi...]]

Problem Statement:

It seems in GOM Inspect 2022 there is no way to force true positions that share the same datum system with no material modifier on any of the datums to move together. This option is only available for datum systems with a material modifier on one or more datums and we are wondering if it is possible to have this same option or behavior available for datum systems with no material modifier.

Example:

Two hole patterns (4 holes each in each pattern) with a 2 true positions applied to each of them, one using datum system A|B (no modifiers), therefore allowed to clock itself back to perfect hole position and another true position using datum system A|B|C(M), also allowed to clock by some allowance given by the actual linear size of datum C. The defects of hole pattern 1 and 2 are in opposite directions (hole pattern 1 is shifted counterclockwise by 4 degrees from nominal whereas hole pattern 2 is shifted clockwise 3 degrees from nominal), therefore, if the fit is treated "together", there is no way the degree of freedom allowed on datum C will be able to fully correct the error. On the other hand, if the fit of each true position is treated separately, each hole pattern will move individually and clock itself to perfect positioning and return 0 deviation. 

 

 

[[Mi...]]

Hello, 
          The tech guide article on the position check can be found at the link below. 
https://techguide.zeiss.com/en/gom-software-2022/article/cmd_inspection_check_position.html

Within the tech guide article it explains this check box as follows. 

Compute the Tolerances of All Elements with One Common Datum System

If other elements use the same datum system in your project, the software automatically recomputes all these elements. This option is only available when you use material requirements with datums or datum systems.

The material requirements is an intentional perquisite for utilizing this check box. 

We do have something called "MyVoice" where you can enter in suggestions such as these. 
https://portal.zeiss.com/my-voice/software/metrology/product/eaafdea8-9296-485d-82c1-cc6d1ca0eca2

However with 2022 being an older software, it is unlikely to receive any future updates. That is why we always recommended staying up to date on your INSPECT software. 

Thank you and have a great day!