Evaluation of the capability of a poly-articulated robot for wood machining
摘要
Industrial robots have become a key technology across various sectors due to their cost-efficiency, availability, and multi-axis flexibility. However, their use in wood machining remains limited, and few studies have assessed the quality of solid wood machined by robots. This study therefore aims to evaluate the capability of a 6-axis articulated robot for wood machining by comparing its performance in terms of dimensional, geometrical, and surface quality to that of a computer numerical control (CNC) router, which serves as the industry benchmark. A total of 35 oak and 35 fir samples were machined under identical conditions using both a CNC router and a robot, across six different positions. The samples were then evaluated for dimensional, geometrical, and surface quality. The results show that the CNC router provides superior dimensional and geometrical quality compared to the robot. For the robot, dimensional and geometrical quality vary depending on the machining position. However, the dimensional and geometrical deviations achieved by the robot are generally around 0.3 mm, which remains sufficient for various woodworking applications. In addition, the surface quality obtained through robotic machining is comparable to that of the CNC router. These findings suggest that articulated robots can be a viable alternative for wood machining.