Dodun Oana, Slătineanu Laurențiu, Nagîț Gheorghe, Hrițuc Adelina, Mihalache Andrei Marius, Beșliu-Băncescu Irina
Department of Machine Manufacturing Technology, Gheorghe Asachi Technical University of Iași, 700050 Iasi, Romania.
Department of Mechanics and Technologies, Ștefan cel Mare University of Suceava, 720229 Suceava, Romania.
Micromachines (Basel). 2022 Jul 31;13(8):1231. doi: 10.3390/mi13081231.
Wire electrical discharge machining (WEDM) is a process that is used when it is necessary to manufacture small-width slots with a micrometer accuracy or to precisely detach parts with complex contours from metal workpieces in the form of sheets or plates. The fact that the wire electrode rests only in the working zone in two of its guides allows it to achieve micrometric oscillations, leading to the generation of an error from the flat shape of the slot surfaces that gradually develops into the workpiece. The slot widths are influenced by several factors, such as the workpiece thickness, pulse-on time, pulse-off time, the wire tension force, the current, and the wire movement speed along its axis. Some theoretical assumptions about the behavior of the wire electrode were first considered. An experimental research plan was then designed to obtain additional information on the influence of the mentioned factors on the slot width in different positions of the cross-section through the slot. The statistical processing of the experimental results led to the elaboration of empirical mathematical models that highlight the order of influence and the intensity of the influence exerted by the factors mentioned above.
电火花线切割加工（WEDM）是一种在需要制造具有微米精度的窄槽，或从板材或板状金属工件上精确分离具有复杂轮廓的零件时使用的加工工艺。线电极仅在其两个导向装置中的工作区域内支撑，这使得它能够实现微米级的振动，从而导致槽表面的平面形状产生误差，并逐渐扩展到工件中。槽宽受多个因素影响，如工件厚度、脉冲通电时间、脉冲关断时间、线张力、电流以及线沿其轴线的移动速度。首先考虑了一些关于线电极行为的理论假设。然后设计了一个实验研究计划，以获取关于上述因素对穿过槽的横截面不同位置处的槽宽影响的更多信息。对实验结果的统计处理得出了经验数学模型，这些模型突出了上述因素的影响顺序和影响强度。
