ISO 1238 and AGMA, tangential composite deviation
ISO 1238 and AGMA, tangential composite deviation
(OP)
Hi Gear Experts!
I need to specify plastic gears for tooling in China. They work to AGMA standards whereas we work to ISO. Is the ISO 1328 quality class the same as AGMA?
And a second question, do I need to specify total and tooth-to-tooth tangential composite deviation in the gear table or is this unecessary if I specify ISO 1328?
Finally is there a formular to calculate tolerances for base tangent length over n teeth?
Any answers to any or all of these questions would be really appreciated.
Regards
Matt
I need to specify plastic gears for tooling in China. They work to AGMA standards whereas we work to ISO. Is the ISO 1328 quality class the same as AGMA?
And a second question, do I need to specify total and tooth-to-tooth tangential composite deviation in the gear table or is this unecessary if I specify ISO 1328?
Finally is there a formular to calculate tolerances for base tangent length over n teeth?
Any answers to any or all of these questions would be really appreciated.
Regards
Matt





RE: ISO 1238 and AGMA, tangential composite deviation
Personally, I do write the "tooth-to-tooth" and the "total composite tolerance" in the table even though I specify AGMA 390.03 because, I have noticed that sometimes the manufacturer by nistake uses the older AGMA 390.02 which is different.