摘要
为提高曲面求交算法的计算效率,改进五坐标自由曲面端铣加工在工程应用中的不足,对轴流式整体叶轮端铣加工的关键技术进行了研究。利用B样条曲线的局部性质,通过恰当选取迭代初始值,提高了曲面求交算法的计算效率;改进了参数筛选法确定刀具轨迹步长的算法,缩短了生成程序的长度,提高了加工效率。依据上述算法自主开发了轴流式整体叶轮专用计算机辅助设计/计算机辅助制造软件,并对该软件生成的刀具轨迹进行了仿真和实际加工验证。仿真和实验结果证明本文提出的算法切实可行,对开发具有自主版权的计算机辅助设计/计算机辅助制造软件有一定的借鉴意义。
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.
出处
《计算机集成制造系统》
EI
CSCD
北大核心
2010年第3期621-627,共7页
Computer Integrated Manufacturing Systems
基金
黑龙江省科技发展基金资助项目(GB05A501)~~
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
urface intersection
integrated impeller
computer aided design
computer anided manufacturing
end milling
