Abstract
In recent years, even in a job shop type production, much higher productivity is required. Multitasking machines are applied widely to reduce preparation time and to improve productivity. Generally, the multitasking machine has the functions for both of turning and milling operations. However, it means that collisions among tools, workpieces and machine tool itself often occur during machining operations. Therefore, the systematic collision avoidance method is needed. In this study, a scheduling method is applied to change the machining sequence to generate a collision free NC program effectively.
