Аннотация
The article considers the three-dimensional model calculation of the trajectory of teeth ripper of the soil.Key words: soil, Ripper, Delphi.Use Rippers of soils with trajectory movement of teeths, development of their construction and the increase of its effectiveness, defines the necessity of research of mathematical model Ripper.In order to study the workflow Ripper, when placed as suspended equipment for tractors, will determine the calculation of the trajectory of teeth of the work of the authority, when driving the tractor on the ground, given the change in speed of movement, rotation, and the lengths of the three links.We adopt the following initial conditions: -speed of rotation of top gear from 50 to 500 rpm.-the length of the links will vary within limits.-speed tractor varies from 1-10 km/H.All received data will be documented in a table (table 1).