riveted hoop

[njsavage]

Hi,


any advice on making a metalic hoop that overlaps and is riveted to join the two ends?


thanks in advance

 

[skateboardkid]

sweep out a half circle and shell it. then using same curcular profile or a section of it sweep your inner diameter of the half hoop as far as you want it to overlap inside the other half maybe an inch or two,, keep this part seperate, uncheck the merge bodies on this piece.

Mirror over the half of the circle and you can do the rivet with basic cuts and extrudes.

you mihgt have to make the overlapping portion on the inside offset a 1/64" or so, so that when you join the overlapping part and the hoop it does not create a continouos part but has the overlapping part inside but not touching outside wall diameter.


Edited by: skateboardkid

 

[njsavage]

hi,





sorry i didn't realise anyone posted on this topic.





thanks for your help. i'll let you know how i get on





cheers

 

[GHPowell]

...or sweep a cross section using a a circlar arc (with a jogfor the overlap) for the path. the path should not be continuous

 

[njsavage]

can anyone give an example of this in a picture? would be much appreciated

 

[Mech_Engineer]

I have similar problem and solved it buy using a variable pitch helix sweep. My part is an L shaped circular collar, which might be a little more complicated due to overlap of both surfaces of the L. This is the reason for the variable helix, which otherwise will give you an modeling error. If you just have a hoop that overlaps on one surface you probably can use a variable pitch spiral. Unfortunately, this site is having problems and I can't upload a pic. Check out my recent post on measurement of this part.

 

[njsavage]

Hi all,





thanks for your help on this. much appreciated.


I managed to create the part by using a circle and a helix function and swept the cross section around the low pitch helix spiral.


Thanks again for your help on this.


In addition to the part design, does anyone have any advice on meshing the part in ANSYS? it's a problematic area, not sure why. The dimensions are :


hoop radius = 362.12mm; width = 50mm; depth = 2mm





any help on the messhing problem would be great





cheers