Use of Kinematic Analysis For Rational Choice of Parameters and Modes of Tillage Disc

Abstract

The paper gives a method to determine a blade line element cutting angle of tillage inclined and vertical flat disks. Formulas are obtained for the blade line element cutting angle of discs, depending on its geometric and operating parameters. Similar dependencies based on the angle, characterizing soil ripping capability of any elementary disc surface area, were determined. Based on these dependencies, it was demonstrated that the vertical discs crumble the soil better than inclined ones. For small depth for the angle, characterizing ripping capability, they are closer to plows and go far beyond rotatory cultivators. Using the dependencies for blade line element cutting angles of discs, the authors demonstrated the way one can narrow the scope for rational choice of geometrical and mode parameters of disks and thus reduce the scope and duration of necessary experimental studies. For an optimal range of all blade line element cutting angles, interacting with the soil, one need either brake disks hard enough or force them to rotate.