Gd&t and model based (MBD) drawing
Gd&t and model based (MBD) drawing
(OP)
How to specify a 2d drawing? See my pdf-file. 4 examples! What is your opininon?
Regards
Gerres
Regards
Gerres
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Gd&t and model based (MBD) drawing
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RE: Gd&t and model based (MBD) drawing
For ASME Y14.5-2009, I don't think it is correct to apply "profile of a line" to an edge. As I understand it, the tolerance is meant to apply to line elements extracted from surfaces.
Whether datum features exist and are referenced by the profile tolerance should be based on functional requirements.
I don't think there's any difference between specifying "profile of a surface" with a general note or with an "all over" leader.
pylfrm
RE: Gd&t and model based (MBD) drawing
I agree with pylfrm, I think the "profile of a line" should be removed. I also think No. 4 is most accurate for MBD, I would just remove the "Edges" with the "profile of a line" and keep the surfaces callout. Datum C can also have a "filled" circle at the end of the leader to callout on that surface. ASME Y14.41-2003 is a good standard for MBD.