关键词: 数据结构, 映射, STEP-NC, AP203文件, 计算机辅助工艺设计, 计算机辅助制造, 信息提取, 计算机数字控制

Abstract: Based on the analysis of the data structure of STEP-NC, architecture of the interoperable CAPP/CAM based on the STEP-NC was constructed. The data mapping methods from AP203 to C++ system, from AP203 to SQL Sever, form AP203 files to geometric information database were discussed in detail. The lexical analysis process of the AP203 files, the establishment and operation process of the geometric information database, the mapping process form the AP203 to geometric information database and the generation process of STEP-NC file based on ISO14649 were studied. Based on these studies, a CAPP system was developed, and its feasibility was proved by an example.

Key words: data structures, mapping, STEP-NC, AP203 file, computer aided process planning, computer aided manufacturing, information extraction, computer numerical control