IMPROVEMENT OF ROTOR WORKING PARTS OF A TILLAGE RIPPING-SEPARATING MACHINE
The research area is the process of functioning of the rotor working parts of the tillage ripper-separating machine that changes the structure and density of the tilled soil layer in accordance with the requirements of the agronomical science. The operation of the rotor knife of the ripping-separating machine is considered in positions relative to the soil and separating grid. Three phases of operation of the rotor knife are as following: from the moment the knife enters the soil to the separating grate, the moment the knife moves above the separating grate, from the moment the knife moves over the separating grid to the knife exit from the soil. The research target is the rotor knife, the shape of the working edge which ensures minimal energy consumption for the operation of a separate knife and the rotor as a whole. The research involved the theoretical studies using mechanical-mathematical modeling of the interaction of working parts with soil. The initial information for the study substantiation was obtained by analyzing the literature sources. The substantiation of the geometrical shape of the profile of the working part of the rotor knife of the ripping-separating machine is performed which makes the minimum work for one complete cycle. The topicality is that the theoretically grounded shape of the profile of the working part of the rotor knife will allow improving the methods of pre-sowing tillage to improve its agrotechnical qualities, with minimal energy expenditure. The target information consumers are designers and specialists engaged in the development of tilling working tools.