Determination of the optimal incline angle of the incision of the cutting machine of the tuber grinder of potatoes

Abstract

For research, we used a root crop grinder with improved operational properties, which ensures the grinding of juicy vegetable raw materials (fodder, sugar and semi-sugar beets, rutabaga, turnips, carrots, potatoes) into pieces in the form of a parallelepiped of sizes corresponding to zootechnical requirements. The rationale for the action of forces on tubers in a stationary reference system in the process of cutting potatoes is given, the shape of which, with some assumption, is accepted as a ball. Based on the laws of mechanics, the authors obtained an analytical expression of the value of the optimum angle of inclination of the contradiction of the cutting apparatus of a particular chopper, depending on the size of the tuber, the height of the horizontal knife and the coefficient of friction. Given the values of these parameters, it is possible to fully carry out a theoretical and practical analysis of the limiting value of the angle of inclination of the contradiction of the cutting apparatus and its effect on the rolling of the tuber, as well as on its pinching.