Yeah, that's another way to do them. The problem with that is that you
can't unfold a part with a thicken feature(at least you couldn't; it was
R6-7 era when I last did a lot of repads). Another is an intersect
extrusion, which if I remember doesn't give a particularly accurate result,
and the fourth is to model it flat and bend it in the sheet metal
environment.
Cheers,
Walt
"Quinn Zander" wrote in message
news:5051495@discussion.autodesk.com...
Wouldn't a constant 4" surfaced ring thickened be more accurate?
Of course the ID's edges are normal to the repad itself on a thicken and not
a "thru" cut so I went in and replaced the normal ID edge to be true to the
24" ID cylinder so the FEA won't freak out with the resultant (real world??)
gap.
QBZ
"Walt Jaquith" wrote in message
news:5051038@discussion.autodesk.com...
Example 1...
In past versions, Inventor wouldn't create a flat pattern of
a repad made
this way, but I tried it, and R10 will do it. This repad is a reasonably
accurate representation of the real thing, and is good for doing FEA calcs
since the nozzle hole conforms exactly to the nozzle. It's set up so it can
be constrained in place on the shell and nozzle via the two renamed origin
axis (a nice touch; these things can be hard to assemble if they're not made
with that in mind). The only real problem with this method is that the
outer shape is made with fillets
, and their dimension has to be a bit less
than half the height of the repad, so there's some trial and error there to
find a value that works. It might be doable with a formula that would work
for most cases. Take a look at the parameters table to get an idea how I
set things up.
Now that this method is unfoldble, it's probably the easiest and best of the
way
s I know to make a repad. I'll try to post a few more in a bit, but this
is the method I'd prefer.
Cheers,
Walt