Posted by Dimebag on November 02, 2015 at 08:56:52:
In Reply to: DIN 5480 Spline posted by Mike Tate on October 31, 2015 at 09:58:52:
Is your spilne specified as N140x5x30x26? 30 means profile angle, 26 is number of teeth, N means it's internal. First you need to find out the profile shift or the addendum modification coefficient:
0,45 is typical for this standard.
The minor dia.
da=m(z+2x-0,9)=130 mm. The typical tolerance for flank centering would be H11, so 130+0,25
The major dia.
df=m(z+2x+1,1)=140 mm. The calculation of tolerance is a little bit more sophisticated here, but it's +1,17 mm.
Hope it helps.
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