Involute spline for gear tooth

[giorgis24]

Hello guys


I have made the involute spline for the geometry of the tooth of gear.I didn 't follow the instructions of PTC,but I put the equation of involute spline in (fy=tan(ay)-ay(rad))ProE.If the Basic diameter is bigger than root diameter,how can I continue the involute spline with out a tangent line?Also,for helical gears the angle helix equation will be the angle on basic diameter or on modul diameter?


Giorgis

 

[audctrl]

I also create involutes once and a while. I draw 2 curves by (involute spline formula) equasion, then I'll either extrude it or sweep it along a helix.


Did you look at these?


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[gggggggggg]

I have a 2 UDF's (User Defined Feature) for creating internal or external splines and gears.

The equation I use is far more complicated and takes into account your question of basic and root diameters.

Email me at "gmorris@pttech.com" if you would like me to send them to you.


Edited by: gggggggggg