旋转超声电解复合加工微小深孔的稳定性研究

The Stability Research of Micro Deep Hole Machined by Rotary Combined Ultrasonic and Electrochemical Machining

为提高管电极旋转超声电解复合加工微小深孔的稳定性,基于ANSYS CFX,建立了气液两相流气穴模型,分析了阴极高频振动条件下不同端面间隙的流场、电场分布,仿真结果表明,大间隙有利于气泡和电解产物的排出,有利于提高加工的稳定性,但不利于孔中心的小凸台的去除。通过辅助阴极能有效减小孔中心小凸台,提高加工的稳定性。

In order to improve the stability of micro-deep hole machined by shaped tube rotary combined ultrasonic and electrochemical machining, the two-phase flow cavitations model was established based on the ANSYS CFX. The distributions of flow field, electric field were gained at different end gap with the vibration of cathode in the simulation. The results showed that it is helpful for the discharging of bubbles and the products in the shaped tube rotary combined ultrasonic and electrochemical machining and the machining stability. But it is not conductive to remove the small boss at the center of hole. It can be effective to reduce the small boss by the auxiliary cathode, which improved the machining stability.