Home > categories > Mechanical Parts & Fabrication Services > Gears > How do you calculate the gear modulus and the number of teeth to calculate the excircle?
Question:

How do you calculate the gear modulus and the number of teeth to calculate the excircle?

How do you calculate the gear modulus and the number of teeth to calculate the excircle?

Answer:

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

Share to: