Sorry for the long post, but if you're not interested in welding or
Pro/Weld and how it interfaces with drawings and standards, then you have
my permission to skip this post. J.
We're in the process of rewriting standards, and in some cases writing
standards that we currently don't have. Everything is on the table.
We use Pro/Weld to do welding AND weld drawings here. Our weld drawings
are done in 3D, NOT 2D, and we have used it since the inception of the
module, many many years ago. For the most part, we get along just fine
with it, but it does have some limitations. I won't go into those here,
that's another post. Along with that, recently (last 6 months), we've
migrated to WF5. Everything associated with welding changed in WF5, and
we knew that going in, so that part was not a big surprise.
However, one thing that is new is puzzling me, and I'd like to get the
communities feeling about what is right and what is wrong, IF anything is
wrong.
A little bit of history on our weld callouts. In the past, our "standard"
(that's a loose term in this case, because we don't really have one,
except word of mouth, and "That's the way that we've always done it") has
always been that anytime there is an abrupt change in direction, a new
weld callout is required, EVEN IF those welds are connected. I don't
believe that this is unique to us, and in fact, I've seen this in some
standard books, so I think that we're doing this correctly, or at least
correct per some standards somewhere.
The red welds in this view are the way that we would call it out
currently:
So, here's the rub. There is a new pick in WF5 that allows for tangency
propogation on welds. This goes across surfaces, if the surfaces are
tangential. That sounds like a good idea, but the problem comes in that
when you go to put the weld callout on, the weld is ONE weld, with the
length of the entire joint. When you forget to check tangency propogation
OFF, you get a weld and weld callout that look like this (blue line):
If you add up all of the individual welds from example 1, they come up to
6.5 in length. I wonder if what Pro/E is doing here is totally legal?
The actual welding might be "legal", but is the weld callout here correct,
or is that in violation of the standards, since there's an abrupt change
in direction. With that being said, I also realize that it would be a
little bit problematic to determine what an abrupt change of direction is.
So here's my question that I would like to hear from the community about:
1) Do you do weld callouts like example 1 or example 2?
2) Does an abrupt change in direction always require a new weld
callout?
3) Is there a welding standard that allows the weld callout in
example 2 to be correct?
Sorry for the long post, but as always, your input is appreciated!
Thanks!
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