In micro electrical discharge machining (micro-EDM), the precision fabrication of cylindrical micro rods is difficult to achieve with a high processing efficiency. In order to overcome this challenge, this paper proposes a new processing method, which is denoted as twin-mirroring-wire tangential feed micro electrical discharge grinding (TMTF-WEDG). The machining principle, characteristics, and realization of the new method are firstly introduced. Then, the advantages of TMTF-WEDG in terms of machining efficiency and accuracy are demonstrated. The experimental results have shown that the machining efficiency can be increased to more than 70% in comparison with conventional tangential-feed wire electrical discharge grinding. It has also been proved that a minimum removal of material corresponding to a reduction of less than 1 μm in the diameter of a micro rod can be obtained by TMTF-WEDG. This considerably helps in improving the accuracy and repeatability of the machining process. A deviation of less than 1 μm on the diameter of a micro rod has been obtained in a length range of 800 μm. The process repeatability in machining five micro rods has been established to be below 2 μm. The proposed method is therefore of great significance for improving the machining efficiency and ensuring a high precision in the shaping process of cylindrical micro rods.

在微放电加工（micro-EDM）中，难以以高加工效率实现圆柱形微棒的精密制造。为了克服这一挑战，本文提出了一种新的加工方法，称为双镜丝切向进给微放电磨削（TMTF-WEDG）。首先介绍了该方法的加工原理，特点和实现。然后，证明了TMTF-WEDG在加工效率和精度方面的优势。实验结果表明，与传统的切向进给丝放电磨削相比，加工效率可以提高到70％以上。还已经证明，通过TMTF-WEDG，可以实现与微棒直径的减小相比，材料的最小去除量小于1μm。这在很大程度上有助于提高加工过程的准确性和可重复性。在800μm的长度范围内，微棒直径的偏差小于1μm。已确定加工五个微棒的过程可重复性低于2μm。因此，所提出的方法对于提高加工效率并确保圆柱形微棒的成形过程中的高精度具有重要意义。在800μm的长度范围内，微棒直径的偏差小于1μm。已确定加工五个微棒的过程可重复性低于2μm。因此，所提出的方法对于提高加工效率并确保圆柱形微棒的成形过程中的高精度具有重要意义。在800μm的长度范围内，微棒直径的偏差小于1μm。已确定加工五个微棒的过程可重复性低于2μm。因此，所提出的方法对于提高加工效率并确保圆柱形微棒的成形过程中的高精度具有重要意义。