Scientific Journal of KubSAU

Results of engineering and scientific search of improvement of resource-saving machine technologies of finishing and cleanup processing of cars details, development of new camps and technologies are presented. The possibility of low-frequency fluctuations with big amplitude can be implemented due to assembling flat or curvilinear elements on external surfaces of the relative screw reel. The use of computer modeling enabled us to obtain a relative screw drum that provides not only giving movement to loading masses with a big fluctuations amplitude, but also compression of loading masses in the process of their motion from loading to unloading. In such machines increase in processing efficiency is reached not only due to achievement of great movement amplitudes values of the loading masses, but also at the cost of compression of loading masses in processing and intensity increase of their mixing. The scheme of the machine for continuous processing with mechanization of separation of details from working environments particles is provided. Results of researches of quality and surfaces micro hardness change processed in the offered machines designs show that details processing time makes 3-6 min

A number of small-sized machines for division of loose materials on the basis of screw drums created with use of engineering geometry and computer graphics methods, in particular of the engineering geometry section: curves and surfaces. In these machines, unlike the known ones, the effect of the movement of bulks on the curvilinear surfaces of screw reels with imposing of low-frequency fluctuations from the vibrator on this main movement is used. Such addition of two movements does not only increase productivity, but also provides self-cleaning of the sifting surfaces of screw drums. The standard machine’s schemes are presented with use of low-frequency fluctuations on the basis of the screw drums made of several screw punched strips with smooth screw lines on perimeter and also of screw drums of only one of punched strips with various form of cross section of the sifting surface

Improvement is offered for working bodies’ forms in devices for preparation of forages by methods of engineering geometry and computer graphics. That opens not only great opportunities for intensification, increase in productivity and efficiency of the technological processes, but also opens ways for creation of small-sized devices for their realization. Constructive study of geometry of working bodies surface, allows us to give wavy movement to particles of forage and impart them the movement with bigger power consumption. In such installations forage particles components, meeting walls of working body, change their direction and, meeting other portions of particles of forage components, mix up. From loading to unloading, throughout the installations working body length, flexible and strong waves of forage particles components movement inside the working body are born. The conducted pilot studies have shown that as a result of working bodies’ forms improvement of devices for preparation of forages by methods of descriptive geometry such devices can be implemented in a variety of industries

The article presents the results of the research on modeling of working bodies of agricultural equipment by methods of engineering geometry and computer graphics. The design and the principle of operation of the equipment on the basis of working bodies in the form of screw drums is shown on the example of a device for the preparation of concentrated feed