jim,
Which contact ratio are you talking about (total, transverse, axial/face)? And specifically how are you calculating it?
Note these gears have a pressure angle of 14.5 degrees.
Using Dudley's book, I'm getting some different numbers.
Thanks,
Mike
diamondjim,
Thanks for the response.
"Why the 45 degree helix?" I'm asking the same question to the Machinists who came up with this tooling design. The reality from my point of view is the configuration of the tool doesn't even warrant helical gears. Spur gears would do.
I...
Is a 16.5 to 1 ratio outside the acceptable range for a single reduction using helical gears. I'm just starting to look at a machine tool that has been designed by someone else (non-engineer type)?
Some specifics:
Helix Angle 45 degrees
12 Diametral Pitch
Pinion
12 Teeth
Gear
198 Teeth...
