ABSTRACT
Total cutting force may be presented in the following form: F F F F Fsum k r m s= + + + (1)
where Fk = resistance of material force on tooth during the most frequent cutting, Fr = friction force on contact surfaces of rock massif and cutting organ, Fm = resistance of fragmented material within the bucket and Fs = force depending on working weight of tools by which fragmentation is performed and on weight of loaded material.
