Draw Cycloidal gears with the Equation Editor

[GeorgK]

Hello together,

is it possible to draw cycloidal gears with the formula editor?

http://de.wikipedia.org/wiki/Zykloide

http://www.csparks.com/watchmaking/CycloidalGears/

http://www.bealltool.com/jrbeall/module_chart0001.pdf

There is a video for NACA-Profiles (Airfoil Design Using Equation Curve Inventor😞

Thank you very much

Georg

[JDMather]

Post screen shot of how you are atttempting to enter the Equation Curve.

[GeorgK]

I do not know how to start it. It does not work with the formulas.

[karthur1]

What are the formulas you have?  Are your units consistent?

[JDMather]

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@Anonymous wrote:

Post screen shot of how you are atttempting to enter the Equation Curve.

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without information on your curves it is not possible to determine why it doesn't work for you.

Attached are some example curves (pull down EOP step-by-step.

[GeorgK]

The formula:

x=r(t - sin(t))

y=r(1- cos(t))

Thanks for your help

[JDMather]

I am interested in a screen shot of how YOU are entering the formula.

[GeorgK]

Thats what I am looking for:

http://grabcad.com/library/gear_cycloidal_design_table-sldprt

but only for Inventor 🙂

[JDMather]

zip and attach the sldprt file here.

(I will look at it and then, once again, I will ask you to show how you are attempting to enter the equation in Inventor.)

[GeorgK]

Attached is the zip-file.

[karthur1]

George,

I worked with your part a little.  Could not quite get the tooth profile correct, but I didnt have much time to mess with it.  The equations that you give does not quite work, or maybe I am missing something.

[GeorgK]

Hello Karthur1,

thank you very much for your help. I found a cycloidal gear generator which creates svg-files. Is it possible to create them in Inventor?

http://code.google.com/p/drh-horology/downloads/list

The source can be found here:

http://code.google.com/p/drh-horology/source/checkout

Thanks

Georg

[GeorgK]

I found the formula and a description for the cycloidal gear:

http://www.ceet.niu.edu/faculty/kim/mee430/documents/Cycloidal%20Gear.htm