INTERRELATION BETWEEN TOOTH STIFFNESS AND FEED RATE OF A FRAME SAW TOOTH

Abstract

The accuracy and quality of lumber requires the use of modern equipment with wood-cutting tools of the required rigidity. The stability of the tool in the cut depends on the stiffness of the saw blade, which directly affects the quality of the machined surfaces. That's why wood cutting tools are made of special tool steels, in which alloying elements affect the physical and mechanical properties of the steels, in particular their stiffness. The stiffness of the saw tooth and the saw as a whole is influenced by the cutting forces, especially the lateral cutting force, which tends to bend the tooth and thus reduce the accuracy and quality of the cut. In turn, the cutting forces depend on the feed to the tooth, and the higher the feed to the tooth, the higher the cutting forces. Therefore, it is very important to establish the relationship between tooth stiffness and tooth feed to ensure high productivity of the sawing process and proper accuracy and quality of the machined surfaces.