Question about AGMA standard
Question about AGMA standard
(OP)
hello
i'm sizing a couple of helical gears and i have a question about this image:
. N are about number of teeth and P_d is transverse diametral pitch
i don't think it is correct because the result is too little. I think the correct formula is C=(D+d)/2, with "d and D" pitch diameters.
the second question is about the word "manufactured". in the handbook there is the distinction between "manufactured center distance C" and "operating center distance C_o". i don't have any info about C_o, neither in the handbook. how can i assess it?
i'm sizing a couple of helical gears and i have a question about this image:
. N are about number of teeth and P_d is transverse diametral pitchi don't think it is correct because the result is too little. I think the correct formula is C=(D+d)/2, with "d and D" pitch diameters.
the second question is about the word "manufactured". in the handbook there is the distinction between "manufactured center distance C" and "operating center distance C_o". i don't have any info about C_o, neither in the handbook. how can i assess it?





RE: Question about AGMA standard
i don't have the respective AGMA paper in my hand, but imo the above formulas would be correct if Pd was proportional to 1/modulus. So looking up in wikipedia i found:
So prhaps there's again a metric vs. imperial "mantrap", hopefully you don't design spaceships to Mars?...
For the other question, there must be a formula somewhere, else there's no sense t make up the difference. Also, there's a thread here on eng-tips: http://www.eng-tips.com/viewthread.cfm?qid=146377.
Regards
Roland Heilmann
Lpz FRG
RE: Question about AGMA standard
RE: Question about AGMA standard