航空铝合金薄壁零件高速加工铣削力  

Milling force of aerospace aluminum alloy thin-wall parts in high-speed machining

作　　者：王凌云[1] 黄红辉 谢志江[2] 

机构地区：[1]上海工程技术大学机械工程学院,上海200437 [2]重庆大学机械工程学院,重庆400044

出　　处：《中南大学学报（自然科学版）》2017年第7期1756-1761,共6页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助项目(U1530138);上海市教委自然科学基金资助项目(gjd-07050)~~

摘　　要：探讨铣削力三维有限元计算方法,研究航空薄壁零件高速加工切削力变化规律。基于Advant Edge 3D铣削模块,实现对AL7075航空铝合金材料的铣削过程仿真加工并研究铣削力规律。预测不同切削时间下工件及刀具上的温度分布,建立高速铣削参数对铝合金7075铣削力和铣削温度的影响曲线。通过实际铣削试验验证仿真结果的可靠性。研究结果表明:在铣削速度v为250~1 500 m/min,切削速度大于250 m/min时,切削力随切削速度增加而快速下降;当切削速度大于500 m/min时,切削力变化不大,呈微量上升趋势;轴向力FZ在整个速度范围内变化不大;高速铣削参数对铝合金7075铣削力和铣削温度的影响曲线可辅助优化切削加工参数,有助于减小切削过程中刀具的磨损,改善刀具切削状态,提高刀具使用寿命,为预测其他材料的铣削力提供了新的有限元建模方法。The milling force three-dimension finite element method was discussed. The cutting force variation pattern of the thin-walled aerospace components in high-speed machining was studied. The milling simulation processing of Al 7075 aerospace aluminum alloy was realized and the law of milling force was researched based on the Advantag Edge 3D milling module. The temperature distribution of the workpiece and the tool at different cutting time sequences were predicted. Graphs of the milling force and milling temperature of the aluminum 7075 affected by the high-speed milling parameters were established. Reliability of the simulation was verified by actual test milling. The results show that when cutting velocity vc is 250-1 500 m/min and the cutting speed is greater than 250 m/min, the cutting force decreases rapidly with the increase of the cutting speed. When the cutting speed is greater than 500 m/min, the cutting force changes little with a little increase. The axial force FZ changes little over the entire speed range. The temperature distribution of the workpiece and the tool at different cutting time sequences can assist to optimize machining parameters, reduce cutting process tool wear and improve the tool cutting state, and improve tool life, which provides a new method of finite element modeling to predict the milling forces of other materials.

关 键 词：航空零件 高速加工 铣削力 

分 类 号：TH161.1[机械工程—机械制造及自动化]