抄録
This paper proposes the analysis system of NC data based on a feature information representation. This model is a next-generation CMC control language (ISO 14649) which contains machining information such as machining features, machining operation, and machining conditions enabling feature-based description of the machining process. The machining features and the process information are extracted from a traditional NC program based on a form-shaping function. The proposed analysis system is implemented using data mapping language EXPRESS-X between two sets of model data which are described in EXPRESS data modeling language. The implemented system is applied to the ISO 6983 NC data for the milling machine generated by commercial CAM software.