标题：Information Extraction Method for a STEP-compliant NC Program
作者：Yuan, Guoqiang; Zhang, Chengrui; Zhang, Yuancai; Liu, Riliang
作者机构：[Yuan, Guoqiang; Zhang, Chengrui; Zhang, Yuancai; Liu, Riliang] Shandong Univ, Sch Mech Engn, Jinan 250100, Peoples R China.
会议名称：International Conference on Manufacturing Engineering and Automation
会议日期：DEC 07-09, 2010
来源：MANUFACTURING ENGINEERING AND AUTOMATION I, PTS 1-3
关键词：STEP-NC; CNC; Information extraction; Part program
摘要：STEP-NC provides a way for intelligent NC manufacturing and seamless connection of the computer systems in design and manufacturing industries. It also makes it a must for a new breed of CNC machines to interface directly with the new part programs in STEP format (ISO 10303-21). In this paper, the data model and structure of part programs based on STEP-NC (STEP AP 238) are overviewed. Available tools are discussed and a method of extracting the manufacturing information from STEP-NC physical files is presented, and corresponding software module are developed in ST-Developer (TM) environment. With the aid of the STIX (TM) and ROSE (TM) C++ library, the general information, feature information, technological information are extracted from the STEP-NC file and organized in a tree structure according to the hierarchy of the data model, which is essential to further usage of the manufacturing data, such as process planning, tool-path generating etc.