The innovation of EDM (Electro Discharge Machining) has actually been around for more than 100 years. The main advantage of using this method is that it does not require heat or pressure to cut through products.
This technique is used in numerous fields such as aerospace, automobile, medical, military, consumer goods, etc. This approach is likewise referred to as Electro Machining. There are numerous types of EDM devices which are offered in the market. They are broadly classified into two types, handbook and automated. Manual EDM is primarily utilized for small jobs where there is no requirement for high accuracy.
Automatic EDM devices are mainly utilized in large scale jobs where there is a need for high precision. One of the most important advantages of EDM over other machining procedures is that it is less prone to mistakes and can offer much better precision.
EDM devices are generally based upon 2 technologies, wire discharge machining and electrochemical machining. The former includes melting the metal and then removing it from the electrode through the action of electric present. The latter usages chemical reaction in between the electrode and the workpiece to get rid of the metal.
Wire EDM is one of the finest techniques for performing the above discussed jobs. The wire acts like a cutting tool and gets rid of material from the workpiece. The speed of the wire identifies the quality of the cut.
In the case of air, the workpiece is positioned inside a vacuum chamber and then the wire is fed into the chamber. The workpiece is put in the tank and the wire is placed into the water.
In addition to these, there are numerous other factors which figure out the quality of the cut. Some of them are:
• The voltage applied to the electrode
• The type of wire being used
• The kind of workpiece being used
• The range between the wire and the workpiece
• The kind of dielectric fluid being used
• The frequency of the electrical present
• The type of tool holder
• The temperature of the wire
The above pointed out factors affect the efficiency of the machine. Hence, in order to get great results, it is very important to comprehend the fundamental principles of EDM.
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