Abstract: The paper presents a study of the influence factors on energy consumption of the harvesters during the cutting process, focusing on the of the sharpening angle of the cutting edges of blades and the inclination angle of the stem during the cutting process. Blades with smooth and serrated cutting edges with the usual angle of 20°, and with modified angles of 15° and 10°, were tested on a testing device developed by the authors. Tests were performed using stems of: Maize (Zea mays); Triticale (Triticosecale) and Alfalfa (Medicago sativa). The inclination angles of stems were of 90° and of 45°. The diagrams of variation of force, displacement and mechanical work are presented and discussed