Abstract
Conical involute gears came to be used in a wide range of applications. Recent years, the new applications of the conical involute gears are expected in the field of automobiles. In this paper, the analysis of tooth surface contact is reported using the conjugate surface for the practical design of conical involute gears. First, two coordinate systems that are rigidly connected to a pair of each conical gear are considered, and coordinate transformation between these two systems is explained. The conjugate surface of the conical gear is obtained as envelope of family of shapes made from relative motion of rotation to mate conical gear. Next, the conjugate surfaces are visualized with the generating line of the conical gear on the plane of contact with base cylinder, and theoretical tooth bearing are obtained. Finally, tooth bearing tests are executed and results of tests are in good agreement with the theoretical ones.
