Dynamics of mechanical drives with ball overruning clutches

Abstract

Problem. The possibilities of application and the principle of operation when turning on the new overrunning ball clutch are considered. Its design for the standard starter of cars and other vehicles must function during operation in various modes. The main goal of the work is to study the amount of change in the minimum and maximum time of turning on and off the proposed ball overrunning clutch, taking into account dynamic phenomena at the first stage of its operation. Methodology. The kinematic chain of the drive is considered as the functioning of an elastic system. It has been established that there is a higher probability of dynamic phenomena occurring in such systems during the rolling of the balls into the working grooves of the driven semi-coupling, so this process is considered in the paper. Results. The results of these studies improve the characteristics of unstable modes of operation of new clutches, which can be introduced into production after comprehensive studies of their loading capacity. When the clutch switches to another mode of operation, the oscillating phenomena of its elements are not completely excluded. Originality. Therefore, in order to improve the smoothness of the operation of such new clutches, the possibility of taking into account oscillatory phenomena is being considered. Practical value. Developed analytical dependencies for determining the minimum and maximum engagement time of the ball overrunning clutch are presented. The main parameters for further research of mechanical drives with overrunning ball clutches, for which the operating torque is known, have been obtained.