Involute using parametric curce

saravanan_arumugam

Hi, 

I am trying to generate an involute profile for gear tooth and facing some troubles using the parametric curve feature script. 
This is the equation I am trying to implement.


I checked the examples from the feature script. Using multiplication in the cosine function works but when I try to add, it does not work. Please point out where I am going wrong. 
  

Thanks

NeilCooke

the spur gear feature uses that formula. 

saravanan_arumugam

I am kind of new to onshape. Could you please inform more about this spur gear feature?

NeilCooke

https://www.onshape.com/en/features/custom-features

saravanan_arumugam

Thanks a lot for sharing the link. It helped a lot. I used the code in my script and it worked.