Application of wire cut EDM machining 2011-11-04 Wire cut EDM machining is mainly used to process various punch tie, plastic mold, Powder metallurgy mold and etc, which have 2D and 3D faces combined, or components. As show in figure 1-2. The microcomputer control technology is playing a huge advantage. Electrode wire is connecting to cathode of impulse power source, and workpiece is connecting to anode of impulse power source. 5 Axis CNC EDM Wire Cut Machine is 5 axis cnc control middle speed machine, with high precision. Numerous tiny holes appears due to erosion of impulse discharging, and therefore get the needed shape of workpiece( as show in figure 1-1). Kingred Electrical And Mechanical Technology Co., Ltd. Here the tool is negative and w/p is positive. The spark generated by this process produces heat, which remove metal by erosion and evaporation. Various Electric Discharge Machines The three electric discharge machining methods are: wire, ram/sinker, and small hole EDM, all work on the principle of spark erosion. The tool and workpiece is immersed in a dielectric medium (kerosene or deionized water). EDM manufacturing typically uses one of two methods: sinker EDM and wire EDM. If gap is too big, insulating liquid can’t be break through,, and there will be no spark discharging; if gap is too small, short circuit is easy to happen, no spark discharging neither. As the spark jumps across the gap, material is removed from both the workpiece & the electrode. A wire EDM machine works in a similar way to a cheese cutter or a bandsaw cutting wood, although the wire moves rather than the workpiece. For example, a stamping die can be machined with 1/4 degree taper or a mold with one degree taper in some areas and two degrees in another with precision. Wire EDM machining (also known as \"spark EDM\") works by creating an electrical discharge between the wire or electrode, & the workpiece. This is a process where electrical discharge “sparks” come from the wire or electrode which, basically, erodes the material to make the required part. The procedure should happen in the liquid with insulate capacity, for example saponification and deionized water, the liquid could act as medium of discharging channel and provide cooling and flushing. A thin, electrically-charged EDM wire held between upper and lower mechanical guides forms one electrode, while the material being cut forms the second electrode.You could also get answers of following questions.What is a wire EDM used for?How does wire EDM work?Is EDM wire expensive?What is EDM wire cutter?How fast does wire EDM cut?What materials can wire EDM cut?How thick is EDM wire?What are the two types of EDM machines?How accurate is Wire EDM?Why EDM is used?How do you wire EDM?Can you EDM Carbide? Amit Kumar et al. Electrical discharge machining (EDM), also known as spark machining, uses either an electrode for EDM sinking or a brass wire for wire EDM. In Electrical discharge machining; a potential difference is applied across the tool and w/p in pulse form. EDM is an abbreviation for Electrical Discharge Machining. Because there are visible sparks in the discharge process, it is called electrical discharge machining. The gap between electrode wire and workpiece should be certainly maintained in a required range. Kashif Ishfaq et al. Uses of a Sinker EDM Machine Take discharge as an example: The tool and workpiece must be electrically conductive and a small gap is maintained in between them. Applicable objects of WEDM machine: Wire cutting technology and wire cutting machine tools are widely used in various industries. CNC wire cut EDM machine puts impulse voltage between electrode wire and workpiece through impulse source, controlled by servo system, to get a certain gap, and realize impulse discharging in the working liquid between electrode wire and workpiece. This kind machine’s working principle is to use the continuously moving molybdenum wire as the electrode, and perform pulse spark discharge on the workpiece to remove metal and cut the molding. Because the wire never touches the work piece, there are no cutting forces, so you can cut thin stock, fine ribs, or very delicate forms. As the spark jumps across the gap, material is then removed from the work piece and the electrode.  Takes shape opposite to that of cutting tool  Electrode (cutting tool) made from electrically conductive material  Dielectric fluid surrounds both tool and work  Servo mechanism gives gap.005 to.001 in. A separate EDM head specifically for small hole drilling is mounted on a wire-cut machine and allows large hardened plates to have finished parts eroded from them as needed and without pre-drilling.  A thin wire of brass, tungsten or copper is used as an electrode. The Ecyclopædia Britannica gives a short explanation of EDM:“EDM involves the direction of high-frequency electrical spark discharges from a graphite or soft metal tool, which serves as an electrode, to disintegrate electrically conductive materials such as hardened steel or carbide.”To put it more simply, electrical discharge machining is a manufacturing process that precisely removes material from conductive materials using an electrode.  Electrical discharge machining wire cutting (EDM-WC) is a thermal mass-reducing process that uses a continuously moving wire to remove material. between work and tool  Direct current of low voltage. Working principle In EDM, the tool electrode and the workpiece are connected to the two poles of the pulse power supply respectively, and immersed in the working fluid or … When workpiece is approaching electrode wire in the insulating liquid and gap between them getting small to a certain value, insulating liquid was broken through; very shortly, discharging channel forms, and electrical discharging happens. EDM spark erosion is same as electric spark which burn a small hole in a piece of metal through witch it contacts. Electrical discharge machining process works on the basic principle of spark generation and metal removed by spark erosion. The wire will be energize and create electrical spark between the wire cut cnc machine and workpiece. cnc wire edm is a special purpose machine used for the tool and die making this video is only for the education purpose to spread the knowledge about machines Wire Cut EDM Machine || Wire Cut EDM machine Working Principle investigated the machining of HSS M2 material in wire edm using Response Surface Methodology (RSM) coupled with Grey Relation … Wire EDM machining works by creating an electrical discharge between the wire or the electrode and the work piece. Within this range, not only impulse power can break through insulating liquid to create spark discharging, but also the eroded workpiece can be flushed away after discharging process. Due to the inherent properties of the process, Wire EDM can easily machine complex parts and precision components out of hard conductive materials. 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