Research on the influence of geometry of cutting device on harvesters during the cutting process

Abstract

The paper presents a study of the influence of the constructive parameters of the blades on the cutting machines from the harvesters during the cutting process.The research focuses on the angle of sharpening of the cutting edges of the blades and the angle of inclination of the stalk during the cutting process. The blades used in the experiment have smooth and jagged cutting edges with a usual angle of 20° and modified angles of 10° and 15°. The tests were carried out using maize stalks (Zea mays) with tilt angles of 45° and 90°. The diagrams of variation of force, displacement and mechanical work during the cutting of maize stalks are presented and discussed.