纸基蜂窝模块化固持方法研究

Study on Method of Modularization Fixation for Paper Honeycomb Core

基于磁场与摩擦学蜂窝芯材料固持原理,提出复杂型面纸基蜂窝零件固持平台的模块化设计思想。运用移动模块、固定模块、模块夹具以及导磁体和隔磁体解决了该原理中磁路控制问题,实现了复杂曲面零件在模块化固持平台上的加工固持。通过理论分析和有限元仿真研究了固持系统中蜂窝孔格的受力,分析了固持系统的特点和可靠性,以及永磁体厚度、固定平台高度、铁粉填充高度和平台间隙对磁场力的影响规律。实验与仿真结果表明,模块化固持平台能够满足复杂曲面蜂窝铣削加工的固持要求。

Based on magnetic field and frictional-clamping principle,a new modularization design concept is presented for the fixation system of paper honeycomb parts with complex shapes.The problem of controlling the magnetic field circuit existing in the method is solved using fixed modular,movable modular,modularized fixture,magnetic conductor and magnetic insulator.Clamping of paper honeycomb parts with complex contour on the modularized fixture is realized.Then,by theoretical analysis and finite element simulation,the force on the honeycomb grid in the fixation system is studied,the characteristic and reliability of the fixation system are checked,and also the influencing rules of parameters on the magnetic forces are analyzed,including height of magnetic body,height of fixed modular,height of ferrous powder and clearance between modules.Results of the simulation and experiments show that the modularized fixation system can fix the paper honeycomb parts with complex surface during machining process.