Electrical discharge machining (EDM) is a rapidly developing technique amongst nontraditional techniques. However, low processing efficiency significantly hinders its application in industry. This study proposes a new high-speed EDM milling method using rotating short arcs under a composite energy field. By the combined effect of the Lorentz force, electric field force, and high-speed rotation of the tool electrode, rotating short arcs are generated between the tool electrode and the workpiece, which in turn provide constant erosion of materials. The proposed method can increase the discharge energy density by converging the electric arcs through the composite energy field, and increase the energy obtained by the workpiece. By this means, it improves the material removal rate. During processing, a portion of debris is attracted by the magnetic field and adheres to the end surface of the electrode, which can protect the electrode and reduce the electrode wear rate. Compared with traditional EDM, the material removal rate of the rotating short arc milling was increased by 46 %, while the tool electrode wear rate decreased by 62 %. Furthermore, an increase in the strength of the magnetic field increases the material removal rate of the rotating short arc milling and decreases the tool electrode wear rate and surface roughness. Therefore, high-efficiency and high-quality EDM milling can be achieved by using the proposed method.

放电加工（EDM）是非传统技术中发展迅速的技术。但是，低处理效率严重阻碍了其在工业中的应用。这项研究提出了一种在复合能量场下使用旋转短弧的新型高速电火花铣削方法。由于洛伦兹力，电场力和工具电极的高速旋转的共同作用，在工具电极和工件之间产生了旋转的短电弧，进而提供了持续的材料腐蚀。所提出的方法可以通过在复合能量场中收敛电弧来增加放电能量密度，并增加工件获得的能量。通过这种方式，提高了材料去除率。在处理过程中，一部分碎屑被磁场吸引并粘附到电极的端面，可以保护电极并降低电极的磨损率。与传统的电火花加工相比，旋转短弧铣削的材料去除率提高了46％，而工具电极的磨损率降低了62％。此外，磁场强度的增加增加了旋转短电弧铣削的材料去除率，并降低了工具电极的磨损率和表面粗糙度。因此，使用所提出的方法可以实现高效率和高质量的EDM铣削。旋转短弧铣削的材料去除率提高了46％，而工具电极的磨损率降低了62％。此外，磁场强度的增加增加了旋转短电弧铣削的材料去除率，并降低了工具电极的磨损率和表面粗糙度。因此，使用所提出的方法可以实现高效，高质量的电火花铣削。旋转短弧铣削的材料去除率提高了46％，而工具电极的磨损率降低了62％。此外，磁场强度的增加增加了旋转短电弧铣削的材料去除率，并降低了工具电极的磨损率和表面粗糙度。因此，使用所提出的方法可以实现高效率和高质量的EDM铣削。