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Thread: Creating a Helix Family

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    Creating a Helix Family

    Hey Guys,

    I am trying to model a helix family to represent a CFA for an auger cast pile drill rig. In the picture, the left side helix was made by creating semi-circle swept bends that is rotated & copied and pasted along a circular extrusion. This way works fine, but requires many steps in order to adjust each component.
    The right side is a circular extrusion with a void form to create the angled end cut. I then created a sweep bend that followed the path of the edges and copied and mirrored it to continue down the column. As you can see, the sweep bend is angled into the column and then fully merges into it. I am also not able to make the sweep bend profile any larger than the picture due to error's saying the sweep can't be created.

    Is there something I am doing incorrectly or is there another more efficient way to do this task? Or is there a way to rotate the profile of the swept bend to make it tangent to the column? Any feedback will be very helpful.

    Thanks!!!
    Attached Thumbnails Attached Thumbnails Creating a Helix Family-helix-picture.png  

  2. #2
    Forum Addict elton williams's Avatar
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    Quote Originally Posted by RoycePasalo View Post
    Hey Guys,

    I am trying to model a helix family to represent a CFA for an auger cast pile drill rig. In the picture, the left side helix was made by creating semi-circle swept bends that is rotated & copied and pasted along a circular extrusion. This way works fine, but requires many steps in order to adjust each component.
    The right side is a circular extrusion with a void form to create the angled end cut. I then created a sweep bend that followed the path of the edges and copied and mirrored it to continue down the column. As you can see, the sweep bend is angled into the column and then fully merges into it. I am also not able to make the sweep bend profile any larger than the picture due to error's saying the sweep can't be created.

    Is there something I am doing incorrectly or is there another more efficient way to do this task? Or is there a way to rotate the profile of the swept bend to make it tangent to the column? Any feedback will be very helpful.

    Thanks!!!
    Errors in sweeps are usually from self-intersecting geometry ie, the profile is being asked to turn a corner that is too sharp, so the geometry hits up against itself, so of like a fat person trying to touch their toes

    If you haven't seen Alfredo Medina's tutorial yet have a look. I used this parametric array method to create 3D bolts and screws and so far it's proven bullet proof.

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