How do you calculate the gear modulus and the number of teeth to calculate the excircle?
Tangential deflection coefficients of xt2: paired gearsThe end modulus of mt: gearY: center distance variation coefficientIf the modulus is normal modulus, it is in relation to the terminal modulus: the normal modulus equals the cosine of the terminal modulus multiplied by the helix angle.
The relationship between the outer diameter of a helical gear and its modulus and number of teeth:Gear outer diameter D1=Z1*mt (end to module) +2* (1+y-xt2) *mt
1. standard gear, specified addendum coefficient ha*=1, da=mn*z+2* (ha*) *mn=mn* (z+2) 2. non standard gear addendum coefficient ha* is not equal to 1, according to estimates, roughly estimate the addendum coefficient, thus to the formula of mn* (z+2ha*) 3. gear, need to consider factors of modification coefficient X
