电加工直径大于0.04mm、深度0.1mm的小孔使用钨电极,直径大于0.1mm、深度1.2mm的孔用铜电极;直径大于0.35mm的孔用管状电极,内通工作液,加工深度可以达到15mm。电加工小孔使用的小型电加工设备带有坐标工作台,加工误差为±0.01mm,电加工后用金刚石研磨膏研光,具误差可达到±0.005mm。 Electric processing diameter of more than 0.04mm, the depth of 0.1mm holes using tungsten electrodes, diameter greater than 0.1mm, depth of 1.2mm hole copper electrode; diameter greater than 0.35mm hole tubular electrode, the working fluid through the processing depth can be achieved 15mm. Electrical small hole processing using a small electric processing equipment with coordinate table, processing error of ± 0.01mm, electric grinding diamond polishing paste, with error up to ± 0.005mm.