Composite tolerance

[[An...]]

Still trying to understand what PLTZF is.
See attached.

Contribution_24_04_2020_1.pdf

[[Me...]]

Did you have a question, Andreas?

[[Ja...]]

The upper-half of the Feature Control Frame is asking you to report the pattern in relation to the datums specified (A|B|C or whatever they may be). The lower-half is asking for the pattern to be reported to itself, though it's often held to one datum and that datum is usually the surface or plane the pattern "lives" on. So, more simply, top-half = What's the pattern doing in relation to the part or assembly as a whole? Bottom-half = What's the pattern doing in relation to itself? This is important to control because often a pattern will be just fine by itself, but is in the wrong location relative to everything else.

[[An...]]

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1.) Fitting function part #1 and #2: FRTZF

2.) Fitting function part #2 and #3: two point PLTZF

The location and orientation of every bore pattern is defined by TWO POINTS

So I would call it a REDUCED PLTZF

Contribution_29_04_2020_2.pdf

[[Ja...]]

Okay, now I'm confused. Are you asking a question, or attempting to teach? Either way, hope it works out for you.

[[An...]]

1.)
Ask a question and hope that someone gives a productive answer.

2.)
Be the self-proclaimed teacher and and provoke the pupil to contradict.


Always hoping that the believers in bible don't be offended.