Abstract
STEP-NC is a new data model for data exchange between CAD / CAM and CNC, which provides rich information for CNC machine tools and tells CNC “what to do”rather than “how to do”, overcomes many shortcomings of the traditional G&M codes and has become a hot research issue now. How to efficiently and cost-effectively generate the STEP-NC program is a very crucial problem. Although some domestic scholars have done some research about STEP-NC program generation, most of them do second development base on ST-Developer software. The paper developed a STEP-NC program generation module by using the VC++6.0 and CAD / CAM software. The module can read AP203 file generated by CAD system, identify manufacturing features according to its geometry information and conduct process planning to generate STEP-NC file according to ISO14649 standard. This module has been proved effectively by an instance.
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