ABSTRACT
Transmission and transformation of rotation from a driving shaft to a driven shaft is the main purpose of application of crossed-axes gears. Performance of a crossed-axes gear pair strongly depends on the actual value of the transverse pressure angle. Accurate specification of the transverse pressure angle is vital when designing crossed-axes gear pairs. Perfect crossed-axes gear pairs are capable of transmitting a rotation smoothly. For gearings of this kind, the angular velocity ratio has a constant value, ωp/ωg = const. In reality, crossed-axes gear pairs can be composed of a gear and a pinion with tooth flank geometry for which base cones cannot be constructed. The tooth flanks of approximate crossed-axes gear pairs feature geometry for which no equivalent pulley-and-belt mechanism can be designed to replace the gear pair.
