Thanks for the feedback everyone, that helps a ton! If there are any other comments other than switching Datum C to be the primary datum I'd like to hear them.
jassco,
You would be correct, I had forgotten that basic dimensions weren't specifications because for the past 5 years all of my GD&T involvement has just been positional tolerances really, and I haven't been involved in any inspections because that fell to the manufacturing engineers at my...
3DDave, that's a good idea I hadn't considered, thanks.
The bad news is that I've hit a wall with using 2009; we're stuck with 1994 for the time being to avoid confusion which I get. We're supposed to be making the jump when we switch modeling software versions.
With that, I'm again at a bit...
Burunduk, that's perfect! Our standard block calls out '94, and technically we aren't supposed to change it, but I'll see if there's any chance we can make an exception. I guarantee our quality department won't like it but we have the standard on file, we just never use it...
Ok, so it's a formed sheet metal part, so a datum C or moving datum A is functionally useless.
greenimi, to clarify we're using AMSE (1994). Also, the problem with what you've stated is that a composite profile tolerance won't accomplish what is wanted. I don't care so much about the...
Ok, that makes sense that I can’t remove the [2] dimension completely, I was just referring to removing it’s stays as a basic dimension. Let’s say I want a functional tolerance of [500] +/- 5 and [2]+/-0.05. How would I communicate that without making [2] a normal dimension of 2+/-0.05?
Really...
3DDave, thanks for the quick reply!
Thanks for also confirming what I thought, which is that there’s a lot wrong with this, I’m going to have the 90 and the 2 removed as basic dimensions.
I had this thrown in my lap and it’s been frustrating me and thinking I don’t know how to read GTOLs...
Profile Tolerance Woes
Hey, so I want to make sure I'm not incorrect. I've got a print that is similar to the above and it seems to me that the radius dimension could float from 499.95 to 500.05. The vertical dimension I don't see as necessarily having a tolerance, unless that would also be...
