EXPERIMENTAL STUDY OF THE INFLUENCE OF THE RADIUS OF A CYLINDRICAL WORKING CONTAINER ON THE MOTION REGIME OF THE WORKPIECE BULK IN THE PROCESSING CONTAINER OF A TUMBLING MACHINE

Abstract

The results of an experimental study on the mutual influence of the rotational frequencies of two driving shafts of the developed tumbling machine and the radius of a cylindrical processing container on the conditions governing changes in the motion regime of the working bulk of parts in the working container were obtained and mathematically processed. An experimental research plan was developed to conduct the study. During its implementation, interdependencies were established between the rotational frequencies of the driving shafts responsible for the carrier and relative motions of the cylindrical working container, which performs complex spatial motion, and its radius, on the motion regimes of the working bulk of parts. Experimental investigations were carried out to determine the influence of processing containers of different diameters used in the developed tumbling machine on the conditions for the formation of a mixed motion regime of the working bulk of parts in the working container. The capability of the machine of the developed design to operate with cylindrical processing containers of different diameters installed was practically demonstrated. The machine ensures the motion regimes of the working bulk of parts required for processing in the container under conditions of independently varying rotational frequencies of its two driving shafts, differing in both magnitude and direction. It was established that varying the radius of the cylindrical processing container from a smaller to a larger value affects the interdependence between the parameters of the relative and carrier rotational frequencies of the machine driving shafts, at which a change in the motion regime of the working bulk from cascading to cascading–waterfall is observed. An increase in the container radius from a smaller to a larger value necessitates a simultaneous decrease in both the carrier and relative rotational frequencies of the driving shafts. The established interdependencies between the parameters of the relative and carrier rotational frequencies of the machine driving shafts make it possible to vary them in such a way that, for a selected diameter of the cylindrical processing container, motion of the working bulk with the required intensity along and relative to the geometric axis of the container can be achieved, thereby creating optimal conditions for their processing.