The article deals with the spiral-plate working unit, configured with teeth, the cutting edge (blade) of which is made on site (curve) of the logarithmic spiral. Each helix of studied working unit (taking into account properties of a helical surface or a line) is set at an angle and lift the helix has an angle of rotation generator (i.e., the helix angle of twist). In this case, to create the motion equation of any point of the teeth’s motion, the working unit is in the spatial coordinate system 0xyz so that the origin was in his heart.

The article deals with the interaction process of blade cog of disk-shaped spring (spiral-plate working unit) with the soil. At the same time, taking into account that the intensity of the impact of blade working unit on the ground depends on the speed of its movement, with an increase of which, increases the surface tillage on depth of stroke and cutting weed roots, determined the rate of blade cog at any point, and on the basis of differentiation of its motion equations, and after some transformations, we obtain a formula for determining the cutting speed of any point of the blade cog of disk-shaped spring. We also determined the total acceleration of considering point and the analysis of dependency was carried out.

The basic technological parameters of a qualitatively new method of reinforcing blade units of tillers by method of processing electrical contact continuous flashing. We established schemes of technical execution of the strengthening process and obtained analytical dependences, determining the quantitative characteristics of the power consumption of the processing in a wide range of modes of operational and technological processes in their relationship with the thermal properties of processed materials.