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BHOoi16-Pearl
16-Pearl
October 24, 2015
Solved

Sweep Challenge

  • October 24, 2015
  • 1 reply
  • 2794 views

Hi, I have been trying to model the geometry shown below using sweep. I managed to model its trajectory but not the final shape. I attached the stp file here for those who would like to give it a try. Appreciate you can share your technique to obtain the final shape. ThanksCapture.JPG


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    Best answer by TomD.inPDX

    This is where I have to leave you to scratch your head a little and explore the existing model...

    flower_stalk.PNG

    hint: It is as simple as changing the sweep3 section, which is already tangent, by removing the line segment; then using the appropriate edge to sweep the right size cylinder through the part along the edge of sweep1. 

    1 reply

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    TomD.inPDX17-Peridot
    17-Peridot
    October 24, 2015

    Without digging into it too far, I am going to suggest that the 1st sweep is done with a VSS for a subtle spiral around a simple elbow.

    The 2nd sweep is an arc profile about the edge of the 1st sweep.

    edit... okay, 3 sweeps.  Yours has a cylindrical core which I didn't add, but the final sweep uses the 2 previous sweeps

    This failed miserably when using a simple line/arc/line sketch.  I switched the original spine to a spline and it worked wonders.

    Creo 2.0 commercial file attached

    flower.PNG

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      BHOoi16-PearlAuthor
      16-Pearl
      October 25, 2015

      wow! nice ! Thanks !

      Being more ambitious now,  I want to ensure the inner edge of the final swept surface lands exactly on the inner cylindrical surface, and tangent to it.(refer to the earlier step model) What should I change to achieve that ?

      Capture.JPG

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      TomD.inPDX17-PeridotAnswer
      17-Peridot
      October 25, 2015

      This is where I have to leave you to scratch your head a little and explore the existing model...

      flower_stalk.PNG

      hint: It is as simple as changing the sweep3 section, which is already tangent, by removing the line segment; then using the appropriate edge to sweep the right size cylinder through the part along the edge of sweep1. 

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