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Drawing Involute Spline

thomas_hotchkinthomas_hotchkin Member Posts: 8 PRO
Hey all,

I'm trying to model a spline (mechanical connection) which can be cut using a 6mm end mill, with an involute profile on the teeth. To do this I've drawn an unravelling circle in the sketch to get the involute profile, and joining it with a spline (curve), however I'm struggling to get a fully defined sketch because of the tangent handles on the spline. 

Can anyone recommend a way to fully define the sketch or a better way to achieve this geometry?

You can find a sample of the model here.



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