Posted by BillS on January 19, 2009 at 20:24:41:
In Reply to: Re: Gleason 16 Summary posted by Hano Lourens on January 14, 2009 at 07:40:29:
The PA we need to know is the included PA of the pinion (or gear). Included PA is the sum of PA for both concave and convex tooth faces. Also, Concave PA doesn't necessarily equal Convex PA. Included PA values can be 42.5, 38, 45, or 40 degrees.
Cutter PA does not necessarily determine gear/pinion PA as you might think - you need to know the gear/pinion PA that you are trying to generate - the values given above are typical of different types of service.
For examples, 42.5 is typical for Industrial service, 38 is typical for Automotive, 45 for Truck/Tractor, etc.
Are you working from prints? You might send me print data if you have it available. If possible, send this as attachments to email. If you prefer to FAX then please email me and I'll send you the number.
I've worked out the equivalent NDP based on gear OD to be:
NDP = 5.629
Post a Followup