Maching Technological Study Of Small Form Machined By Electro Jet Machining

As the trend towards miniaturization continues, there are many kinds nontraditional techniques are receiving to meet the needs of macro- to micro-scale machining. For the size between 2～0.1 mm machining, the traditional cutting method could be used for the general material but hard and brittle ones, new unconventional metal remove method should be invented to deal with it. The principle of the electrolyte machining is ion removing from the metal surface; it makes the possibility of high precision. Meanwhile Surface of workpiece which there is no metallurgical defects on, processing by electrolyte jet machining. Therefore, electrolyte jet machining has a great prospect, used in Small-size machining.Electrolyte jet machining is mainly used for drilling hole before but the author of this paper processes narrow groove used it and study technological law. Further, the author machines three-dimensional shape, used it. The main research contents as following:(1)The author of this paper has studied and developed a new electrolyte jet machining tools.the equipment for shaping the nozzle has been invented also, the internal diameter of the nozzle could beΦ0.0033mm.(2)The parameters that machined narrow groove by electrolyte Jet machining are researched(such as voltage, duty cycle, frequency and velocity of nozzle exit is researched in the device).the law molded narrow groove is summarized.using electrolyte jet machining, spark discharge arises between the nozzle and the work piece, it makes the process can not be continued. In order to control the production of electric spark and stabilize the processing state, through orthogonal test i investigates various factors generated electric spark. I have found that duty cycle have significantly effect on Velocity produced spark.The more big duty cycle the easier producing spark. When diameter inside nozzle isΦ0.67mm, target distance is lmm, voltage varies from 450V to 550V, the frequency varies from 100 Hz to 1000 Hz, duty cycle varies from 10% to 90%, and the amount of metal remove varies from 4.1mg to 10.15mg. the author machines narrow groove on Stainless Steel. With the analysis the shape of groove, once a part of the work piece entered machining zone which was formed by jet, it will be evenly machined. Therefore the form of the cross-section of groove was machined is oval.In other words, it looked like cutting effect of an oval ball milling cutter.(3)The author carried out two-dimensional.engraving using jet electrochemical machining.and the width of the groove can be fined to 0.05mm in the engrave.the model which study shape of groove is verified.The law processed narrow groove, found in this papers is base studied for machining Small-size three-dimensional shape.