Precessional transmissions. Vol. 2: Contact Geometry, Kinematics and Bearing

Abstract

The monograph PRECESSIONAL TRANSMISSIONS consists of three volumes and is structured into 12 chapters with distinct contents, which as a whole refect the development of precessional transmissions from idea to implementation. Volume 2 - Precessional Transmissions: Contact Geometry, Kinematics and Bearing - includes chapters 7 and 8, devoted to the development of the geometry and kinematics of tooth contact in precessional gears under the aspects of increasing the bearing capacity and reducing the power losses at relative sliding with friction between conjugated anks. The pro les of the teeth, the geometry of the convex-concave multiple pair contact and the kinematics of the contact point are described analytically according to the constructive parameters of the gear. The modi cation of the tooth shape, de ned by the geometry of the convex-concave contact and the degree of replacement of relative sliding by rolling friction of the conjugated anks, is described. The extension of gear ratios to the area of small values depending on the correlation of the tooth numbers of the conjugated wheels is addressed. This monograph, by the way of approaching the problems, represents an interface of the academic textbook and of the research-design guideline, comprising all the stages of product development: from idea - to theoretical and experimental research; from design - to manufacture and implementation. The work is addressed to researchers in the eld of exact sciences, engineers-machine builders, Bachelor, Master and Doctoral degree students in higher technical education, especially to all those concerned with the research of mechanical trans-missions, as well as those interested in innovative activity.