Tooth Profile of an Involute Gear

  • J. R. Colbourne


In general, the tooth profile of a rack may be curved, and the profile angle \(\phi^{\rm A_r}\) would then vary from one point of the tooth to another. We now consider a particular rack, in which the teeth are straight-sided. This is the basic rack which we use to define the tooth shape of an involute gear. The profile angle for this rack is constant, and the value of the constant will be represented by the symbol Φr, which is called the pressure angle of the basic rack. Thus, for the basic rack used to define involute tooth profiles,

$$\phi^{\rm A_r}=\rm constant=\phi_{\rm r}$$


Gear Pair Tooth Profile Pressure Angle Base Circle Profile Angle 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag New York Inc. 1987

Authors and Affiliations

  • J. R. Colbourne
    • 1
  1. 1.Department of Mechanical EngineeringThe University of AlbertaEdmontonCanada

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