Makarchyk A. Deep milling cutter of local action.

The process of soil aerator-fluffing by deep rippers of local action with the aim of rising the efficiency of deep aerator- fluffing in local zones determined by production technology is investigated. The methods of research are the following: analytical, which is used with the help of differential and integral calculus; experimental, which is used with the help of mathematical statistics methods. The main peculiarities of soil destroying by deep ripper of local action with self-turnaround milling cutter and deep cutter moving strength dependence from geometrical parameters are pointed out. Also the mathematical models of deep ripper interaction with soil and optimisation of number of destructive elements for minimal draught resistance of the ripper are proved. The fundamentally new construction of working devices, which went through natural checkout are proposed. The results of degree thesis can be used in project and scientific institutions of certain profile, in industry and in educational process.