基于B样条的航空薄壁件加工变形预测与控制  

Forecast and control of thin-wall part of aircraft’s deformation during based on B-spline

作　　者：张晓峰[1] 周凯[2] 陆俊百[2] 

机构地区：[1]河西学院机电工程系,甘肃张掖734000 [2]清华大学精密仪器与机械学系,北京100084

出　　处：《机械设计》2010年第4期44-46,50,共4页Journal of Machine Design

基　　金：国家自然科学基金资助项目(50775126);国家高技术研究发展专项经费资助项目(2006AA04Z145)

摘　　要：针对开发航空薄壁件多点柔性工装系统的需求,研究了航空薄壁件多点柔性数控加工中的变形预测与控制问题。研究了利用有限元分析和Matlab编程建立B样条加工变形数学模型并进行预测的方法及高速铣削切削参数在线优化控制加工变形的原理和方法。研究结果表明:基于B样条曲面数学模型可对加工变形进行预测,切削参数的在线优化能够有效地控制加工变形。研究结果为有效地解决柔性工装的设计和制造提供了必要依据。Based on requirements of multi-point flexible manufacture,this paper develops a research on deformation forecast and control. Deformation is calculated based on maximum deformation under different forces simulated in Finite element and B-spline surface interpolation model constructed using MATLAB. Further more, relationship between deformation and machining parameters such as cutting depth,width,spindle speed,and federate is studied. The results demonstrate that deformation forecast could be made by using B-spline surface interpolation model and deformation control could be conducted by adjusting machining parameters. These results provide a basic foundation on which flexible industrial equipments should be designed and manufactured.

关 键 词：航空薄壁件 柔性加工 有限元 变形预测 变形控制 

分 类 号：TH123.2[机械工程—机械设计及理论]