关键词: 曲面求交, 整体叶轮, 计算机辅助设计, 计算机辅助制造, 端铣

Abstract: In order to improve the efficiency of surface intersection algorithm, and to overcome the five-axis freeform surface end milling shortcomings of engineering application, the key technologies of integrated axial impeller end mill were studied. In the field of computer aided design(CAD), through the using of local property of B-spline, the computation efficiency of surface intersection was improved by choosing the appropriate initial iteration. In the field of computer aided manufacturing(CAM), the parameter screening algorithm was improved to determine cutting step, the length of numerical control(NC) program was shortened and the processing efficiency was improved. Integrated with axial impeller, special CAD/CAM software was developed. The generated cutting path was simulated and processed. Simulation and experimental results showed that these algorithms were feasible, and provided reference for the development of CAD/CAM software with proprietary intellectual property rights.

Key words: urface intersection, integrated impeller, computer aided design, computer anided manufacturing, end milling