METAL MILLING MACHINE'S DISC WITH MULTIPLE CUTTING DIAMETERS

摘要

The invention relates to a metal disc destined for the adaptation of knifes, which disc constitutes an accessory for milling machines (soil working machinery) and is provided with multiple homocentric cycles serving for the adaptation of knives to the holes upon selection of the cutting diameter with regard to cultivation needs (fig. 3): greater cutting diameter for the cultivation of tough non-cultivated soil and smaller cutting diameter for the fragmentation of soft soil (fig. 3). Advantages:no replacement of the knifes-bearing shaft by another provided with discs having holes of different diameter is required; the adaptation of knives to the holes of a single metal disc provided with the same knife-bearing shaft suffices for the operation of the milling machine.