Lisoviy I. Justification of coulter settings for direct sowing

The object of research is the process of creating a furrow during direct sowing. The objective of the work is to improve the quality of direct sowing through technical justification of the design and parameters of a drill coulter. Theoretical methods of research are based on the use of mechanical and mathematical modeling of the processes performed, differential and integral calculation apparatus, regulations of theoretical mechanics, analytical and differential geometry. Experimental investigation was carried out at the laboratory and in field environment using appropriate, specially designed installations and units. The paper presents further study of the characteristics of the interaction of gear element with soil; the analytical method for calculating the shape of the cutting blade was developed for the first time which allows realizing sliding cutting of plant residues with minimal energy costs without clogging the working body. New patterns of the angle of the tooth regulation according to deepening level and the radius of rotation were received; new patterns, peculiarities and features of cutting stems of various crops were disclosed. The structural novelty of technical solutions for the useful model is confirmed by three declarative patents of Ukraine. The recommendations to improve the elements of the universal drill coulter were developed on the basis of the work results. The recommendations were passed to agricultural machinery factories such as public joint-stock company "Umanfermmash", the city of Uman, Public joint-stock company "Chervona Zirka ", the city of Kirovohrad public joint-stock company "Todak", in Kyiv to implement into the production process. Some results of theoretical and experimental research of the theses are used in the education process at Kirovohrad National Technical University.