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JWayman1-Visitor
1-Visitor
November 1, 2010
Question

Coil winding

  • November 1, 2010
  • 3 replies
  • 1871 views
Hello,
I am trying to model a coil winding: a helical layer on a former, followed
by another helical layer at a larger diameter and so on.
I have figured out the helical layer. I can even get it to increase in
diameter as it goes along the drum. I can't get how to increase diameter and
start winding at the new diameter and in the other direction along the curve
to get the second layer, then increase diameter again for the third, etc.
I hope that makes sense.

Any ideas?

Thanks,

John

    3 replies

    F
    frederick.burke1-Visitor
    1-Visitor
    November 1, 2010
    Hi John,



    I don't have a solution, but I do have a recommendation.



    Don't do it. Helical features take up huge amounts of memory.



    Whenever I am working on a coil, I just revolve a stack of doughnuts



    And nobody ever knows the difference. I once had a 400 part assembly



    on my screen. My springs were real springs and my helicoils were real
    helicoils.



    I had a total of 11 helical sweeps in my assembly. I replaced each with
    a stack



    of doughnuts and the difference in performance was like night and day.



    Now I never use helical sweeps in parts that are going to be assembled
    into



    something else.



    Best regards,



    Frederick Burke


    G
    gjackson1-Visitor
    1-Visitor
    November 1, 2010
    Draw each "layer" of your coil winding and ignore the layer to layer
    transitions for a second. After you have created each layer, go back and
    create transitions between each layer (which is a tangent to tangent
    transition). I would use a one wrap transition between each layer for ease
    of design.



    i.e. 4 layer coil would consist of 4 helical sweeps (standard layers) & 3
    helical sweeps (tangent to tangent) to combine layers.



    Hope that this makes sense.



    Greg Jackson
    Design Engineer - Material Handling
    BuntingR Magnetics Company
    316.284.2020, ext. 141
    G
    gkbeer1-Visitor
    1-Visitor
    November 2, 2010
    You can do it with a pair of graph features to control the winding helix and
    z transitions.
    The initial feature will be a curve created by equation, and the equations
    will include evalgraph functions.

    Once the curve is created. A vss feature can be created on that.



    On Mon, Nov 1, 2010 at 8:24 AM, Wayman John (external) <
    > wrote:

    >  Hello,
    > I am trying to model a coil winding: a helical layer on a former, followed
    > by another helical layer at a larger diameter and so on.
    > I have figured out the helical layer. I can even get it to increase in
    > diameter as it goes along the drum. I can't get how to increase diameter and
    > start winding at the new diameter and in the other direction along the curve
    > to get the second layer, then increase diameter again for the third, etc.
    > I hope that makes sense.
    >
    > Any ideas?
    >
    > Thanks,
    >
    > John
    >
    >
    >
    >
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