Datum callout on FCF or Dimension
Datum callout on FCF or Dimension
(OP)
Please see attached image. Is there a difference between stacking the datum on the FCF versus on the dimension?
Thanks,
Jeff
Thanks,
Jeff
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Datum callout on FCF or Dimension
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RE: Datum callout on FCF or Dimension
RE: Datum callout on FCF or Dimension
Tunalover
RE: Datum callout on FCF or Dimension
Season
RE: Datum callout on FCF or Dimension
Any validity to that?
Thanks,
Jeff
RE: Datum callout on FCF or Dimension
You were taught the wrong thing. An unfortunately all too common occurence.
John Acosta, GDTP S-0731
Engineering Technician
Inventor 2013
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Smartcam 11.1
SSG, U.S. Army
Taji, Iraq OIF II
RE: Datum callout on FCF or Dimension
Jeff
RE: Datum callout on FCF or Dimension
If would be 2 or more features with the same shape as the one in the original post (2 or more slots with radii at each end) how the interpretation would be different (if it would)?
In other words, in section view shown, the right section is exactly the same as the left one and we have 2x for the size (8 +0.1/-0) how the placement of the datum C will have any effect on the interpretation of the drawing (see Season Lee’s 3 scenarios/cases)
Case #1 “The datum feature symbol can be in line with a dimension line and touching the extension line on the opposite side of the dimension line arrowhead of a FOS”
Is datum C the pattern or ONLY the left ( “middle plane). Lets assume we are talking about slots and not threads (as shown in the OP)
Probably you would say: pattern. And the following up question is how I say then if I need only the left slot to be datum feature C
Case #2” The datum feature symbol can replace one side of the dimension line and arrowhead of a FOS dimension.”
Same as #1
Case#3 “The datum feature symbol can touch a FCF which is applied to a FOS.”
Here also I would say pattern.