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About EDM Tooling
EDM tooling, electrodes, fixtures, materials, guides and other supplies are used in electrical discharge machining (EDM), a highly-accurate manufacturing process for creating shapes within components and assemblies. EDM connects a metal workpiece to a power supply and uses a shaped tool or electrode to erode material in order to form the desired geometry or pattern. The electrical discharge is of very short duration and high current density. There are two basic types of EDM machines: wire and probe. Wire machines pre-drill a hole in the workpiece and then feed an electrode through the hole. Sinker machines cut workpieces without pre-drilling holes and typically use a machined graphite or copper electrode. To create a potential difference between the part and the electrode, the workpiece is often immersed in a circulating dielectric fluid.
EDM tooling requires materials such as electrodes and wires. Some electrodes are prefabricated with letters, numbers, or symbols. Others are prefabricated for machining internal threads. Tube-shaped electrodes with a single bore or multiple bores are used in drilling and trepanning applications. Ram or sinker electrodes have a three-dimensional configuration that creates an imprint or cavity in a machined workpiece. Electrode holders clamp electrodes in place to ensure a high degree of precision and repeatability. Special guides called ferrules are made of ceramic materials and used to feed through electrodes or wires. Zinc-coated wire provides superior corrosion resistance, spark formation, and flush characteristics. Dielectric fluids conduct sparks at an applied voltage, cool the workpiece and the electrode, and flush away eroded debris. Typically, dielectric fluids include additives such as surface cleaners and corrosion inhibitors.
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Engineering Web: EDM Tooling
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Intech EDM > Shop Intech EDM > Tooling Contact Intech EDM Shop Intech EDM > Tooling |
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New Tooling EDM Tooling/Reference Systems/Workholding for die-sinking and wire electrical discharge machines |
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Tooling, Die Making, Custom Manufacturing TOOLING Tooling, Prototype & Short Run Capabilities See Bazz Houston Company Information |
