This study is focused on the fabrication of spirals microelectrode and spirals micro-cutting tools by using low speed wire electrical discharge turning (LS-WEDT). Firstly, the concept, movement relationship and machining principle of LS-WEDT process are analyzed, respectively. Then, the effects of new parameter of rotating speed on surface roughness, surface microstructure, elements change and material removal rate in LS-WEDT are evaluated in detail. Experimental results demonstrate that LS-WEDTed surface is significantly improved, micro-voids become more and smaller but foreign element contents increase with the increasing of rotating speed. More importantly, the space flexibility, negligible electrode wear and multiple cutting strategy of the LS-WEDT make it competent in fabricating micro tools with complex structure and high accuracy. Consequently, spirals microelectrode with high accuracy can be obtained for spiral pitch standard deviation of 2.57 and thread angle standard deviation of 0.96, and pitch length and thread numbers can be flexibly controlled in LS-WEDT. Additionally, the three spirals taper micro-cutting tool is fabricated by LS- WEDT based on the shape and cutting edge trajectory simulation results. Furthermore, the three spirals micro-cutting tool with average diameter of 175.77 μm and length of 1300 μm is firstly and successfully manufactured by LS-WEDT method.

这项研究的重点是通过使用低速导线放电车削（LS-WEDT）来制造螺旋微电极和螺旋微切削工具。首先，分别分析了LS-WEDT工艺的概念，运动关系和加工原理。然后，详细评估了新的转速参数对LS-WEDT表面粗糙度，表面微观结构，元素变化和材料去除率的影响。实验结果表明，LS-WEDTed表面得到了显着改善，微孔越来越小，但随着转速的增加，异物含量也随之增加。更重要的是，LS-WEDT的空间灵活性，电极磨损可忽略不计以及多种切削策略，使其能够制造出结构复杂，精度高的微型工具。因此，在螺距螺距标准偏差为2.57，螺距角标准偏差为0.96的情况下，可以得到高精度的螺线微电极，并且可以在LS-WEDT中灵活地控制螺距长度和螺线数。另外，基于形状和切削刃轨迹仿真结果，由LS-WEDT制造了三个螺旋锥度微切削刀具。此外，首先成功地通过LS-WEDT方法制造了平均直径为175.77μm，长度为1300μm的三螺旋微切削刀具。LS-WEDT根据形状和切削刃轨迹仿真结果，制作了三螺旋锥度微切削刀具。此外，首先成功地通过LS-WEDT方法制造了平均直径为175.77μm，长度为1300μm的三螺旋微切削刀具。LS-WEDT根据形状和切削刃轨迹仿真结果，制作了三螺旋锥度微切削刀具。此外，首先成功地通过LS-WEDT方法制造了平均直径为175.77μm，长度为1300μm的三螺旋微切削刀具。