Knowledge of the process of cutting soil with a cutting edge leads to the study of many phenomena: wear of the cutting edge, instability of the path of travel of the plow, clogging of working tools with weeds, etc., no less important are the energetic of working tools in relation to the parameters of the cutting edge. Thus, for example, V. I. Vinogradov and G. A. Shushkevich [2] showed that with an increase of thickness of the cutting edge of the blade draft of the plow increases and can increase by 40-50%. N. I. Voloshko [3] during investigation of parameters of the cutting edge of cultivators weeding sweeps also established an increase of draft of 25-30% of working tools when dull.
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