The innovation of EDM (Electro Discharge Machining) has been around for more than 100 years. The primary benefit of using this approach is that it does not need heat or pressure to cut through products.
This method is used in numerous fields such as aerospace, automobile, medical, military, consumer goods, and so on. This approach is also known as Electro Machining. There are lots of types of EDM makers which are offered in the market. They are broadly classified into two types, handbook and automatic. Handbook EDM is primarily used for little tasks where there is no requirement for high accuracy.
Automatic EDM makers are primarily utilized in big scale projects where there is a need for high precision. These machines are rather costly and need high maintenance costs. Among the most crucial benefits of EDM over other machining procedures is that it is less susceptible to mistakes and can offer better precision. Another important benefit of EDM is that it can produce complex shapes.
EDM machines are basically based upon two technologies, wire discharge machining and electrochemical machining. The former includes melting the metal and then removing it from the electrode through the action of electrical current. The latter uses chain reaction in between the electrode and the workpiece to get rid of the metal.
Wire EDM is one of the finest techniques for carrying out the above pointed out jobs. The wire acts like a cutting tool and eliminates material from the workpiece. The speed of the wire identifies the quality of the cut.
EDM can be carried out in either air or water. In the case of air, the workpiece is positioned inside a vacuum chamber and then the wire is fed into the chamber. Water EDM is carried out in a tank filled with water. The workpiece is positioned in the tank and the wire is placed into the water. In both cases the workpiece should be electrically conductive.
In addition to these, there are numerous other factors which determine the quality of the cut. Some of them are:
• The voltage applied to the electrode
• The type of wire being utilized
• The type of workpiece being utilized
• The range between the wire and the workpiece
• The type of dielectric fluid being utilized
• The frequency of the electrical present
• The type of tool holder
• The temperature of the wire
The above mentioned aspects impact the efficiency of the device. Therefore, in order to get great results, it is essential to comprehend the fundamental concepts of EDM.
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