Computerized simulation of generation, meshing and contact of double circular-arc helical gears

The authors have investigated the generation, geometry, meshing and contact of double circular-arc helical gears. Such gears have been proposed in extension of the idea of single-arc Wildhaber-Novikov gears with the purpose: (i) to obtain two zones of meshing and reduce the bending stresses, and (ii) keep the advantage of reduced contact stresses of W.-N. gears. The proposed methods and developed computer programs cover the solution to the following problems: 1.Determination of the paths of contact on the gear tooth surfaces. 2.Determination of the bearing contact as the set of instantaneous contact ellipses. 3.Determination of transmission errors caused by gear misalignment. The investigation is illustrated with numerical examples.