That's confusing. ANY diameter countersink can be controlled by the diameter dimension - that's the way it is done. I have no questions about that aspect. I just want to know what VD stands for. How do YOU measure a countersink, Chris?
If your customer can't explain it, you might just as well disregard the VD and take it as a standard countersink. If they find fault with it, the burden is on them to show otherwise.
The buyer just responded:
She says that guy went out in the shop and asked. She was told that it stood for "Visuallu dull" as in break edges.
Think someone's pulling her leg? I do.
I think KimBellingrath made a typo? Maybe that was suppose to read "visually dull"?
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For a c'sink callout, "visually dull" does not make sense to me. Some inspectors may argue the description of it.
I would remove it and just call out the depth/angle. If the surface roughness needs to be something special, it needs to be indicated.
Chris
Systems Analyst, I.S.
SolidWorks/PDMWorks 05
AutoCAD 05 ctopher's home site (updated 06-21-05)
FAQ559-1100
FAQ559-716
KimBellingrath:
You'll find lots of seeming experts on D&T in this forum. Years ago I learned that there are reams of people who are convinced that "their way" is the "right" way or the only way to do it. When in doubt I simply go to ASME Y14.5M-1994 and all the other ASME standards. I am not shy about leaving behind all those self-proclaimed experts in favor of going to the "horse's mouth" of ASME standards. As for abbreviations such as VD I would first go to ASME Y14.38 ABBREVIATIONS. If you don't have Y14.38 then MIL-STD-12 is practically identical and available for free on the Defense Logistics Agency's free ASSIST on-line document server.
tunalover,
Ease up a little. I haven't seen any posters claiming to be experts on this forum. I am often given new insight to Y14.5 through this forum. I agree that ideally the standards should be followed, but this isn't an ideal world. KimBellingrath had a question that is not addressed in ASME Y14.5.
If this abbreviation was covered by these standards, this would have been a very short thread, but it isn't, so we are just putting out suggestions on what the abbreviation may mean. Just because the abbreviation isn't listed in the standards doesn't mean it should be ignored without trying to determine it's purpose and meaning.
