面向电弧放电加工的旋转冲液夹具模态分析及结构优化研究
Modal Analysis and Structural Optimization of Rotary Flushing Fixture for Arc Discharge Machining

根据电弧放电加工过程利用高速冲液流场对电弧进行有效控制的工作原理，设计了一套用于实现高速内冲液功能的旋转冲液夹具。旋转冲液夹具的动态特性对电弧放电加工的加工性能具有明显影响，因此，采用ANSYS有限元分析软件对冲液夹具进行模态仿真分析。仿真结果表明，冲液夹具在工作时会出现沿某些方向的剧烈振动，导致弹性部件发生较大的变形。分析仿真结果可知，通过改进材料属性和几何模型，可以减小弹性部件的振动变形，最终实现旋转冲液夹具的结构优化。
Based on the theory of arcing controlling with the high-speed inner flushing flow fluid forming while machining, the rotary flushing fixture is designed. Furthermore, the dynamic characteristics of the rotary flushing fixture have the significant effect on the machining performance of the arc discharge machining. Therefore, the modal simulation analysis is conducted to explore the vibrant performance of the flushing fixture by a finite element analysis software ANSYS. The simulation results show that the vibration in some directions of the flushing rotary fixture would occur violently while machining, which results in large elastically deformation parts. The simulation analysis results show that the deformation of the elastic parts could be decreased by adopting the different material properties and geometric model, from which the structure optimization of the rotary flushing fixture could be realized