Formula - Virtual number of teeth

Q.  Virtual number of teeth on pinion of bevel gear is calculated using the formula __________
(where zp = number of teeth on pinion, γp  & γg = pitch cone angle)

- Published on 23 Sep 15

a. zp / cos γp
b. zp / cos γg
c. zp / cos2 γp
d. zp / cos3 γp

ANSWER: zp / cos γp
 

    Discussion

  • Gunter   -Posted on 19 Dec 18
    Thank You very much good help
  • Gunter   -Posted on 19 Dec 18
    Thank You very much good help
  • Sravanthi   -Posted on 28 Sep 15
    Bevel gear and equivalent spur gear are kinematically equivalent. The back cone radius is equal to pitch circle radius of imaginary spur gear.
    zp / cos γp is used to calculate (zp') virtual number of teeth on pinion & zg / cos γg is used to calculate virtual number of teeth on gear.

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