Transition (rectangle to circle)

[ben@GR]

I am making a part which transitions from a 172mm X 140mm rectangle to a 152.4mm diameter arc. The part will connect the outlet of a large blower housing to a 6" duct. I created the part by utilizing a blended protrusion, then converted to sheetmetal by shelling. I can model the part just fine.....the problem lies in the fact that i can not seem to be able to get the part to unbend. I've tried the "blend vertex" feature, but to no avail. This seems to be a relatively common issue within sheetmetal. Does anyone have any insight into this issue? Perhaps an alternate way to model the part so that it will unbend? Thanks.
Ben

2007-09-12_165150_transition.prt.zip
Edited by: ben@GR

 

[ben@GR]

No one?

 

[sanjeevkar1]

there is a microsoft words presentation file in the following thread


[url]http://www.mcadcentral.com/proe/forum/forum_posts.asp?TID=29 579&PN=1[/url]





take a look at that may be it will help you


and meanwhile i'll tryto make that part

 

[caddie]

Create a new empty part. Insert a copy geometry and copy the surfaces of one of the sides from yourSMT part(the white or the green side). Add a radius and then Use #insert #advanced #flatten quilt. This will produce something that is close to what you want.


Also: Set mesh_spline_surf Yes in the config.pro and go to wireframe. See the mesh? It says it is a spline surface and can normally not be unbent in proe.


File attched with a flatten quilt 2007-09-14_022614_flattenquilt.prt.zip

 

[contour]

2007-09-24_113225_transition.prt.zip


Is it O.K.?

 

[shankar_me]

hai contour


I couldnot unbend the part in your file.


shankar

 

[motskari]

Hi,
Try this one.


br
-Ari-2007-10-15_014434_suctioncone_f112350.prt.zip

 

[contour]

To shankar_me


You can not unbend this part because it is unbent already. (If you are talking about part, mentioned in my post above). To get it formed you can suppress last feature (unbend), or add "bend back" feature.