To improve the machining efficiency of large symmetrical freeform surface, this paper proposes a new machining method： symmetrical machining （SM）. Based on the concept of collision avoidance plane （CAP）, collisio...To improve the machining efficiency of large symmetrical freeform surface, this paper proposes a new machining method： symmetrical machining （SM）. Based on the concept of collision avoidance plane （CAP）, collisions among cutters or headstocks are avoided, and the area of machining residue is controlled effectively. Machining residue is eliminated due to proper design of symmetrical tool in mechanism and control project. Taking 5-axis symmetrical machine with columnar headstocks and flat cutters as example, this paper proposes collision avoidance algorithm. Finally, using a twin-skeg ship model surface as an example, the method is applied to avoiding collisions in original tool path. Simulation and real machining results show that the scheme is practical. Furthermore, the machining efficiency of SM is improved 85% more than that of the traditional single cutter technology.展开更多
基金Project supported by the National Basic Research Program of China (Grant No.2005CB724100)
文摘To improve the machining efficiency of large symmetrical freeform surface, this paper proposes a new machining method： symmetrical machining （SM）. Based on the concept of collision avoidance plane （CAP）, collisions among cutters or headstocks are avoided, and the area of machining residue is controlled effectively. Machining residue is eliminated due to proper design of symmetrical tool in mechanism and control project. Taking 5-axis symmetrical machine with columnar headstocks and flat cutters as example, this paper proposes collision avoidance algorithm. Finally, using a twin-skeg ship model surface as an example, the method is applied to avoiding collisions in original tool path. Simulation and real machining results show that the scheme is practical. Furthermore, the machining efficiency of SM is improved 85% more than that of the traditional single cutter technology.
