Posted by BillS on September 27, 2017 at 11:30:08:

In Reply to: circular thickness posted by Amrinder on September 26, 2017 at 11:55:34:

There are different charts for K (circular thickness factor) which are for different classes of bevel gears (straight, spiral, zerol, etc). You can Google the charts and matching formulas using K, but I could find no complete formula for calculating K.

I ran into this when programming software for bevel summaries, and had to create tables that are interpolated to arrive at a K value. These interpolation and tables also depend on the class of gear. I'd like to think that my use of tables in the software yield results as good as a visual interpolation arrived at from a paper chart.

One source made the following comment below one of the charts when the question would naturally arise about a complete formula:

"The calculations of circular thickness of a Gleason spiral bevel gear are so complicated

that we do not intend to go further in this presentation."

- Re: circular thickness
**tom***14:52:01 09/29/17*(0)