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针对微细阵列轴和孔的电火花加工,提出了利用数控电火花加工机床摇动功能的摇动加工微细阵列轴和孔的方法。此法是基于电火花反拷贝加工的原理,先用丝电极在薄平板(中间电极)上按要加工的阵列轴和孔间距或数倍间距加工阵列小孔(直径0.1 mm以上),然后用加工的薄平板(中间电极)作电极,电火花摇动加工微细阵列轴(电极),最后用此微细阵列电极加工阵列孔。进行了电火花摇动加工微细阵列电极试验,得到了单电极直径为50μm、长径比为16的3×3阵列电极,并用此电极在70μm厚的不锈钢板上加工出单孔直径为70μm的3×3微细阵列孔。试验结果表明,电火花摇动加工方法可实现微细阵列轴和孔的加工。
Aiming at the EDM of fine array axis and hole, a method of sharpening micro array axis and hole using NC EDM machine shaking function is proposed. This method is based on EDM anti-copy processing principle, the first wire electrode on the thin plate (middle electrode) to be processed by the array axis and the hole spacing or several times the array of small holes (diameter of 0.1 mm or more), and then use The processed thin flat plate (middle electrode) serves as an electrode, and EDM oscillates the micro array axis (electrode). Finally, the micro array electrode is used to process the array hole. A micro-array electrode test was carried out by EDM to obtain a 3 × 3 array electrode with a single electrode diameter of 50 μm and an aspect ratio of 16. Using the electrode, a 3 μm diameter stainless steel plate with a single hole diameter of 70 μm 3 × 3 fine array holes. The experimental results show that the spark machining method can realize the machining of the fine array axis and hole.