The cutting performance of saw blades with textured structures on the rake face, main and secondary flank face

Abstract

In order to explore the influence of textured sawteeth on saw blades cutting and wear performance, linear micro textures perpendicular to the chip flow direction were fabricated on the rake face, main flank face and secondary flank face by laser machining, respectively. The cutting tests were carried out on sawing platform by different cutting speed, and the cutting forces, noise, temperatures, machined surface quality and sawteeth wear were studied. The results indicated that textures fabricated on the secondary flank face can effectively reduce friction with the machined surface and improve the surface quality, and the roughness Ra was decreased about 2.5% ~ 12.5% compared with traditional saw blade. The improvement of saw blades cutting performance by preparing micro textures on the main flank face was greater than the textures fabricated on the rake face. Due to the synergistic action of textures at different cutting faces, the cutting force, noise and temperature of saw blades with textures prepared on all cutting surfaces was the lowest. The main wear forms of sawteeth were tip wear, surface adhesion wear and oxidation wear. Although the derivative cutting phenomenon was occurred, the micro textures were not filled completely, it signified that the micro textures still played the role of stored cutting fluids, reduced contact area and formed lubrication film.