飞机整体框类结构件铣削加工的模拟研究  

Study on Key Technologies of Milling Process Simulation for Aerospace Monolithic Components

作　　者：黄志刚[1] 柯映林[1] 

机构地区：[1]浙江大学机械与能源工程学院,杭州310027

出　　处：《中国机械工程》2004年第11期991-995,共5页China Mechanical Engineering

基　　金：国家自然科学基金资助项目 ( 5 0 175 10 2 ) ;国防型号工程项目 ( 0 0 -1810 -0 785 )

摘　　要：针对航空整体结构件铣削加工变形的复杂制造问题 ,建立了三维铣削加工有限元模型。深入研究了材料模型、残余应力施加、动态切削载荷、材料去除等铣削加工模拟所涉及的关键技术 ,并详细论述了铣削加工模拟过程。应用该模型对某框类结构件进行了不同铣削顺序的加工模拟 ,通过零件变形模拟值与实验加工所得零件变形值的比较 ,证明该有限元模型可以实现对零件铣削加工变形规律的预测。In order as to reveal the reasons to bring in distortion due to milling and to control them further, a finite element model used to simulate milling process was established with regard to aircraft integrated-components. Some key techniques such as material model, initial residual stress model, dynamic cutting load model and material removal model, were built and studied deeply. A new flowchart for simulating the milling process was proposed. After that, in relation to a typical aircraft integrated-component, some different machining sequences were covered. Comparing the results of simulation and experimentation, the proposed model was proved to be right and can be used to predict distortion of aircraft integrated-components due to milling process.

关 键 词：整体结构件 铣削加工 有限元模拟 动态载荷 

分 类 号：TH123.2[机械工程—机械设计及理论]