Can’t get revolve to work

[trollins1]

Could someone please take a look at mymodel and see what I am doing wrong. I can't put the round revolve on the end of my thread. It works on the front of it as you will see on the top.


It will not work on the backside though. I am using the faces of the end of the helical sweep and using a 6mm radius to drive the revolve.


Using WF4 and getting warning: Unattached REVOLVE was detected.


Also getting couldn't intercept part.


Thank you


2012-04-29_230325_145g_product_shrink.prt.zip

 

[kenppy]

Both sides work fine if you revolve it just sufficiently to dig back into the main body say 50 not 360. It must get confused by the whole revolve which is not necessary anyway.

 

[Bob_W]

I was just playing with a couple other ways to do this thread. In the model there are two options at the end labeled OPTION1 and OPTION2, unsuppress the one you want to look at. One has the radii included in the sweep section, but that will cause the radii to disappear as the sweep disappears at the upper end of the thread


2012-04-30_081224_145g_product_shrink.prt.zip

Bob

Edit: Just noticed the rounds in option2 are incorrect. They should be deleted and then re-done with the rounds at the root of the thread first.



Edited by: Bob_W

 

[trollins1]

Hey Guys,


Thank you for the replies. The 50 degrees worked. Can't believe I fought it all day for that. Just being lazy and clicking finish instead of putting in degrees of rotation.


Thanks again!

 

[dgs]

It's a geometry problem. Because of the pitch, the revolve
at the bottom end actually adds to the bottom of thread
profile behind the lead out you are trying to add if you do
it 360 degrees. That's why making it only 50 degrees in
the direction that you're adding works, pro/E doesn't ahve
to do the math on the sliver that's added to the bottom of
the thread. I suspect 180 or even 270 would work too.

It doesn't happen at the top because the relationship
between the sketch plane is the opposite and the revolve
doesn't add material on top f the thread surface.

 

[jraquet]

You can adjust the Sweep profile to merge into the neck of the bottle. This will make the helical sweep follow the sweep into the bottle.View attachment 5639

 

[jraquet]

This may be a better pic.


View attachment 5640

 

[kenppy]

You can adjust the Sweep profile to merge into the neck of the bottle. This will make the helical sweep follow the sweep into the bottle.

I do recall seeing this somewhere - do you have reference?
thanks

 

[Bob_W]

One reference is the model I attached in my previous post (#3)

Bob

 

[tgsp]

If you modify your helical sweep profile to start at the
surface of the bottle (straight line), then move outwards
at an angle (say 45 degrees) to your final offset distance
of 38.58. Use a second straight line to move down
vertically along the edge of the bottle, and them a third
line to move the sweep trajectory back to merge with the
bottle (you will need tangent connections, so you will have
to add two radii to connect the 3 lines)
Basically your path will be a c shape that starts and ends
at the bottle surface. This will avoid the extra steps that
you are taking to try to blend it.