Offset Alignment, Dimension T not work?

Hi!

We have measured a detail in fixture and now we want to move the reference holes in the detail to see if it can make it better.
Now we have offset the alignment as we should move the holes, just to see what it makes before we change it physically.
Once we have done that all the XYZ dimensions are changed the same as we have offset the alignment, but the T-value stays the same.

Does anybody now if there is a solution to get the T-dimension to follow the offset?

Matthew D. Hoedeman over 11 years ago

When you tweaked the alignment, did it ask if you wanted to update the nominals? If so, did you tell it NO?
Did you make the offset alignment as a new alignment at the end of the program?

Depending on how you did this offset alignment will determine what you need to do and how to do it and also if you are measuring the reference holes or not.

What I would do is make a BEST FIT alignment at the end of the program, probably a 2-D best-fit, and use all the features EXCEPT the reference holes. This will give you (obviously) the best you can get on all the features (except the holes) and then you can dimension the holes to see how 'bad' they are to the 'best' the part can be.

If the holes are not measured (due to a solid pin in the fixture), you would need to make generic points at the nominal locations of the holes BEFORE you do the best fit alignment so you can 'see' where they end up afterwards.
Cancel
Vote Up 0 Vote Down

Sign in to reply

Cancel