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Coil equation/code/program

Coil equation/code/program

Coil equation/code/program

(OP)
Hi,

I have a coil pack i need to draw.  unfortunately it is not your average circular coil.  The general shape is more in the form of a rectangle with rounded edges.  Similar to a oval, but has strait lengths on the sides and rounded on the ends.  Think of the old fruit snacks called wild things that had a coiled shape on a piece of paper.  The coil is planer/flat so its not like your average extension spring.  Does anyone know how I could program this or write an equation to make this shape.

any equations or help would be appreciated!!!!  If you have some code from Matlab or C++ i could at least interpret it and rewrite for Pro-E.

Thanks!!!

RE: Coil equation/code/program

You can create the form as a surface.  Then create a dtm curve as a straight line at the pitch angle.  Then wrap the curve around the form.  Then use the wrapped curve as the path to sweep the coil section along.

RE: Coil equation/code/program

I had to do a similar type of coil for a project I worked on once.  What I found easiest was to just create a sketch of the path in the plane the part needs to be in, then did a sweep of my profile along that path.
This way is not very parametric, but I do not know if Pro|ENGINEER / Creo can handle a piecewise function.

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