Borys A. Improvement of the efficiency of mechanical drives by the use of ball fastening and safety couplings

In the dissertation work the theoretical and experimental researches of processes of transfer of rotational moments by mechanical drives are executed, kinematic chains of which are equipped with overhead couplings.       The analytical dependences for mathematical description of the process of transfer of loads in one direction and the study of interrelated parameters characterizing the robustness, kinematics-power parameters of ball couplings of mechanical drives of machines are developed. The basic criteria of synthesis of a ball clutch coupling of a multi-speed rear bucket sleeve of a serial bike and new ball clutch and safety couplings, which received patents of Ukraine on utility models, were developed.       The algorithm of choice and determination of structural, kinematic-power and operating parameters of couplings, which provide the given efficiency of the kinematic chains of mechanical drives is developed. The results of experimental research are submitted for verification and confirmation of the basic theoretical provisions of the dissertation. The conclusions and recommendations for the practical use of the theoretical provisions for improving the efficiency of the mechanical drives of machines using ball clutches and safety couplings have been formed.