3D Pattern stuck a 180 degrees

I was creating a 3D part in Pro-E WF and needed to pattern it 360
degrees. I created datum, set my degree for the datum, created a
curved datum using the sketched datum curve tool, and created my solid
sweep feature. The model was now grouped. I clicked pattern for the
group and typed in the quantity that I needed but it aborted. I then
typed in a smaller amount (9) to see if that would work. It created
the pattern but only went 90 degrees then skipped to 180 degrees and
placed over existing parts. Any ideas?

 

It does. Use 'copy -dependent' to copy the feature or group of features (I
do gear teeth like this) once, rotated through the correct index angle about
the centre axis of, well, whatever. Then pattern the copy (there's only one
driving dimension for the copy) and hey presto: all fixed. Don't ask me why.

 

: It does. Use 'copy -dependent' to copy the feature or group of features (I
: do gear teeth like this) once, rotated through the correct index angle about
: the centre axis of, well, whatever. Then pattern the copy (there's only one
: driving dimension for the copy) and hey presto: all fixed. Don't ask me why.
:
A couple of things surely cause patterns to fail or act goofy. The first is
referencing fixed, noncircular geometry in your original feature. That's one of
the reasons to use only an axis and possibly a circular outside surface as sketch
references for the original. With WF2, they've added the enhancement that you
don't even need that moveable datum for circular patterns, just that axis ~ all
the more reason to get used to using it as a sketch reference.

The other that I've seen frequently is related to the way Pro/e makes circles ~ as
two, 180 degree arcs, from zero (@ 3 o'clock) to +180 and to -180. Maybe that lets
them avoid double bookkeeping every point on a circle by its positive and negative
value (+90 as -270), then using plus and minus as purely directional indicators,
clockwise and counter clockwise. In any case, in past revs, features referencing a
circular edge, especially those with an arc segment created with 'use edge', often
couldn't pattern past that that break at 0 or 180. Even now, in WF2, when you use
an outside cylindrical surface as a sketch reference, it picks only half the
cylindrical surface, but it shows the reference as a circle. And, using the Axis
pattern, it has no difficulty patterning a full 360, or not that I've experienced,
so far, even with surfaces. If you still have trouble, try sketching with
referencing circular edge or cylindrical surface, just an axis in the middle. Make
an arc, using the axis as the center, the same size as the o.d. but not locked to
the edge. These are just some of the ways to eliminate trouble before it starts.

--
David Janes

:
: : > I was creating a 3D part in Pro-E WF and needed to pattern it 360
: > degrees. I created datum, set my degree for the datum, created a
: > curved datum using the sketched datum curve tool, and created my solid
: > sweep feature. The model was now grouped. I clicked pattern for the
: > group and typed in the quantity that I needed but it aborted. I then
: > typed in a smaller amount (9) to see if that would work. It created
: > the pattern but only went 90 degrees then skipped to 180 degrees and
: > placed over existing parts. Any ideas?
:
:

 

The angle needs to be part of the feature.
So for your sketched curve, you should do a make datum for the section
references with your initial angle. You should than be able to pattern
that dim successfully.

 

"> The other that I've seen frequently is related to the way Pro/e makes
circles ~ as

You can also use construction circles concentric to the reference circle.
arcs then sketched on top of these are more reliable than ones made with
'use edge'

Thanks David, I'l try the axis pattern functionality - as usual, I was just
sticking with what I knew.