| If You
Don't Want a Pattern, You Have to Say So!
Because of the simultaneous
requirements rule stated in section 4.5.12 in the Y14.5
Standard, if features are controlled relative to the same
datum reference frame, the features are considered to be a
pattern. Both drawings shown below indicate that the two
keyseats are a pattern and must be located as
shown.
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| The keyseats are considered to be a
pattern. Their orientation is controlled by the position
callout(s)
In order to unlock the
orientation of the two keyseats to one another, a note
indicating separate requirements must be stated.
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In this
example, the orientation of the keyseats is
unimportant. |
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