Fullround problem

[ndk]

I'd encountered a strange problem in WF. Ianyone helpme?Icannot make a fullround for the cross bellow.Sides surface has a draft of 3 degrees.


View attachment 2767


Here's the file:2006-10-12_084855_prt0001.prt.rar


Catia V5 does not have suchthis problem, here's the result in Catia


View attachment 2768

 

[giridhar_tech]

Try by first,


Filleting the four intersection Corners & then going in for the full round of the walls,

 

[proengineertips]

Here is a workaround >>



create one site full round > measure the diameter > the delete the round feature



create a new rounds feature for all the 8 edges in a same set.



after that create another round feature for the 4 side edges.



disadvantage: not associative with the solid thickness



View attachment 2769

 

[ecirwin]

I made 2 models, the first I'm not really that happy with. So, I went back and created another model with what I think is a more appropriate corner that is also parametric. It does require a point that is used for a reference of the radius size (bottom of the sets drop down in the dashboard). The point is created by the intersection of 3 planes. It creates a nice corner that is has full rads.

I have come across this problem before, but this is the first time I have been able to come up with a satisfactory solution.

EricView attachment 2778

2006-10-13_160549_cross.zip

 

[ecirwin]

Actually the point reference works to create the original reference geometry too!

Learn something new everyday!



2006-10-13_161139_cross3.zip

 

[ndk]

Yes, there are so manyworkarounds, but really time consuming and difficult to handle as well as managements. Here's mine:


Create extrude solid with the sketch islike this:


View attachment 2779


The drafting feature is replaced with 3 degreesslope of side walls.inner tangented circle is a fullround.1 sketchincluded all 3 features:Extrude, draft and fullround.And the result is perfect:


View attachment 2780

 

[mjcole_ptc]

The way I did it was similar to what is shown above I created the
Extrusion including the Draft angle of 3 deg but sketched a trapezoid
and did it as a surface feature.



Next I created a Full Round with Same Quilt Surface option and then patterned the extrusion and round in the same group.



I merged the quilts and created the solid and put in the rounds along the tangent inner edge.



It would be Ideal if Pro/E let you use transitions to extend the Full Rounds accros the break in the Side Wall geometry.



Michael

 

[ecirwin]

I guess I am the only one that thinks rounds should flow around corners and not pinch down to nothing. I do everything I can to avoid the condition shown in the picture from Catia in the original post.

I think there is an art to creating rounds. It's not just about getting rounds on the part, but how they look when you are done. My goal, with molded parts, is usually to get a round that goes around most of the part at then end.

I always notice this kind of thing in models from other people. I think it goes back to my days in the machine shop. Just thinking of how the cutter will travel.

 

[proengineertips]

yes definitely! Applying rounds is not straight forward anymore if you are trying to follow exactly to mpdel the design from ID

 

[AHA-D]

I made the cross with triangular sections holding a construction circle between the legs to define the radius for a given height. I then only had to select the 2 top ribs and the 4 internal corner ribs for the round. Setting the round to the value of the construction circle rounds the model down to the required height.


Alex

 

[ecirwin]

proengineertips,

If you are working with a model from ID, then you probably aren't working with rounds. Everything is a blend, not a round. I know, I've spent the last 3 years working in the ID department. Luckily Pro/E has the option of Conic rounds, which saves a lot of time.

The problem from the original post of this thread is more of a "B-side" issue. I think everyone has come up with reasonable solutions to the original post, but somehow I feel like the geometry was simplified for the post. If the walls were not both exactly the same and parallel, what would happen? I know my solutions would start to fall apart and get much more complex.

Eric

 

[colocolo]

Hello everybody.


I have little experience with proe modeling, butI tried to model a rounded and drafted cross and I believe I had good results. As usual, proe works better if you make a lot of simple round features instead of one sigle and complex. In that case, when you make the 4th round on the last cross arm proe seems to "understand" your goal and creates the correct feature. I attached the file.


Bye


colo2006-10-20_040915_prt0001.prt.rar