Abstract: Cutting tools for extracting natural latex from wood have been used for centuries, yet research on tapping knives remains scarce, particularly regarding efficient surface wood cutting tools. This study designed two rotary blades biomimicking woodpecker beak angles for wood-cutting tests. Tests examined surface quality and blade wear under varying parameters. Results demonstrated that the Beak-Edge-Blade was optimal for low-speed (5 mm/s) parallel-to-grain cutting based on peak cutting forces and energy consumption, while the Tip-Beak-Blade performed better in high-speed (15 mm/s) parallel and cross-grain cutting. Both blades showed comparable performance at medium speed (10 mm/s). TiCN coating effectively reduced blade wear but increased cutting forces and energy consumption at both low and high speeds, while reducing these parameters at medium speed. Parallel-to-grain cutting achieved better surface integrity (Sa, Sz, Str) than cross-grain. EDS/SEM revealed two wear mechanisms: fiber adhesion and edge chipping. Beak-Edge-Blade suffered chipping; Tip-Beak-Blade exhibited adhesion. Findings aid precision tool design, notably depth-sensitive tools like rubber-tapping blades.

Key words: Biomimetic')">Biomimetic, Cutting tools, Cutting wood, Wear mechanism