“…CAM preparation is based on machining feature recognition from the CAD model of the part. Several approaches for machining features recognition are proposed in different works: syntactic pattern recognition (Abouel Nasr, Kamrani, 2006;Sundararajan, Wright, 2004), graph-based recognition (Lee, Jhee, Park, 2007), rule-based recognition (Choi, Ko, 2003;Zhang et al 2004;Sridharan, Shah, 2005). These approaches are based on a well known machining feature data base and a topological analysis of the CAD model geometry.…”