CALCULATION OF CUTTING STRENGTH AT PROCESSING OF ALLOYS FROM NON-FERROUS METALS BY CORUNDUM CUTTING PLATES WITH SQUARE-CUTTING CUTTING LOOP

Abstract

At fine-machining of alloys from non-ferrous metals, the state of the working surfaces of the corundum cutting insert is very Important to obtain a high-quality machined surface and the required dimensional accuracy. In addition to the correct orientation of the cutting part of the plate, which is one of the main indicators of the increase in strength and wear resistance, it is necessary to meet high the requirements get to the working surfaces of the corundum-cutting insert. It has been established by experiments that, in comparison with the wear resistance of the finished working surfaces 1.5 to 3.0 times more are not achieved. In addition, the radius of curvature of the cutting blade of the plate is of great importance, the presence of which ensures the necessary state of the working surfaces, removing the defects after sharpening, thereby increasing the wear resistance and the strength of the corundum plates. This will also lead to a preliminary run-in of the cutting inserts.