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dbolin1-Visitor
1-Visitor
May 13, 2016
Solved

New to creo: Revolving a solid

  • May 13, 2016
  • 1 reply
  • 2535 views

Hello all,

I'm in the process of creating a tyre rim using the revolve tool. When I go to revolve the rim cross section into a solid, I seem to be only able to revolve to a certain thickness. At a depth of 5mm which I want, it can only revolve to both sides of the sketch which I don't want. To revolve it to only one side I have to reduce the thickness to under 3mm. Why is this and is there a way to fix it?

The first pic below is what I want it to do. Revolve on the inside edge to a depth of 5mm but as you can see it can't do it.

revolve inside.PNG

The next picture is of what it is capable of doing at 5mm. Revolving on both sides of the sketch. Why can it revolve on both sides to 5mm but not on only one side??

both sides.PNG

Thanks in advance

      Best answer by JonathanHodgson

      Well, how about that?  I definitely would not consider myself "new to Creo" (or at least not to Pro/E ) but I never knew you could revolve and thicken at the same time!  I had to let it change to surface, then manually change it back to solid to find the option though - not obvious!

      Anyway, I'm guessing that the reason it won't thicken above 3mm on the inside is that you have a minimum radius in your profile of about 3mm with the concave side inside.  If you thicken an R3 inwards by 3mm, you end up with an R0 (the 5 thick both sides is 2.5mm in and 2.5mm out, hence it works).  If you try to thicken inwards by more than 3mm, the resulting radius becomes negative, which is not possible.

      1 reply

      J
      JonathanHodgson13-AquamarineAnswer
      13-Aquamarine
      May 13, 2016

      Well, how about that?  I definitely would not consider myself "new to Creo" (or at least not to Pro/E ) but I never knew you could revolve and thicken at the same time!  I had to let it change to surface, then manually change it back to solid to find the option though - not obvious!

      Anyway, I'm guessing that the reason it won't thicken above 3mm on the inside is that you have a minimum radius in your profile of about 3mm with the concave side inside.  If you thicken an R3 inwards by 3mm, you end up with an R0 (the 5 thick both sides is 2.5mm in and 2.5mm out, hence it works).  If you try to thicken inwards by more than 3mm, the resulting radius becomes negative, which is not possible.

      D
      dbolin1-VisitorAuthor
      1-Visitor
      May 13, 2016

      I think I get what you saying Jonathan. And indeed I do have radii of 3mm in the sketch.

      Thanks so much.

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