5 Replies Latest reply on Oct 23, 2013 11:10 AM by Brittany Bakan

    Gear tooth sometimes works sometimes doesn't  (equations)

    Brittany Bakan

      So I am drawing a spur gear tooth using an equation driven spline.  I am using the parametric equations (base diameter/2)*(cos(t)+t*sin(t)) and (base diameter/2)*(sin(t)-t*cos(t))

       

      When I do that I get a couple problems depending on how i I do it

      when I use just numbers like (1.94/2)*(cos....)

      i get the spline that can be trimmed to the adendum but does not touch the base circle. 

      If i do it this way i can not change it using a design table.

       

      If i link it using equations such as ("base@gear"/2)*(cos........)

      it wont solve.  Why can't I use equations linked to other dimensions/equations?

       

      I have tried changing the dimesion base from an equation to just a numerical value but still get the same result. 

       

      Is there a way to do this using my base dimension?

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