Study of the Kinematic and Load Sharing Properties of Wormgearing With Non-Symmetric Tooth Profiles

摘要

The geometry of non-symmetric tooth profiles, i. e. tooth profiles with differentpressure angles on the two sides of the tooth, is studied. A feasible non-symmetric tooth profile for application in helicopter transmissions is laid out as the best compromise among several conflicting factors. The non-symmetric tooth profile is then compared with the symmetric tooth profile studied previously. Based on the detailed comparisons it is concluded that the use of the non-symmetric tooth profile would severely limit the face width of the worm, consequently reduce the number of meshing teeth and cause much higher normal load on the individual gear teeth.