Metal fabrication and precision machining use a lot of traditional and more unconventional methods. Electrical discharge machining (EDM) is a non-traditional method of machining that primarily uses electrodes to accomplish its task. The workpiece and electrode are separated by a dielectric liquid. Once the charge passes through the liquid, the workpiece is reduced gradually to achieve the desired shape and dimensions. This is a highly precise and reductive method of machining. This blog explores the 3 main types of EDM.
Wire EDM uses a thin piece of wire, such as brass, to act on the workpiece. The wire is spun in deionized water along with the workpiece, causing the workpiece to slowly erode away until the desired shape remains. The whole is monitored by a CNC machine to ensure a high level of precision.
Die-sinking EDM uses copper electrodes and a dielectric fluid medium to create parts with desired shapes and cavities. The inverse of the desired shape is imposed on the part, and the electrode slowly imposes the design on the workpiece. This method also uses a CNC system that ensures that the voltage between the gaps is maintained.
Lastly, hole drilling EDM acts as an alternative to conventional drilling methods. They employ a hollow electrode tube that spins as voltage passes through it, creating the hole of desired dimensions. Holes made by this process are very accurate and don’t require additional finishing such as deburring.
Therefore, EDM is a comprehensive process that can be used to create a part of any shape, size, or characteristic.
RWD Tool & Machine Ltd. is a renowned metal fabrication and CNC machining service provider in Vaughan. With a focus on precision machining and custom CNC machining services, our innovative shop boasts cutting-edge methods, state-of-the-art machinery, and skilled technicians. Contact us today for all your metal fabrication and precision CNC machining requirements.
