What does EDM machining stand for?
Electrical discharge machining
Electrical discharge machining (EDM) is a non-traditional machining process based on removing material from a part by means of a series of repeated electrical discharges between tools, called electrodes, and the part being machined in the presence of a dielectric fluid. From: Machining and machine-tools, 2013.
Is EDM a CNC?
EDM does mean adoption of new machining practices. It’s not “traditional” CNC machinery. There are graphite and copper electrodes to understand and manage, a need for the proper work holding and application-specific software.
How long does EDM machining take?
Some small-hole drilling EDMs are able to drill through 100 mm of soft or hardened steel in less than 10 seconds, averaging 50% to 80% wear rate.
What materials can be machined by EDM?
In general, every conductive material can be machined with electrical discharge machining. Common materials include metals or metal alloys such as hardened steel, titanium, and composites. Typically, the electrodes for die sinking EDM are made of copper or graphite.
What are the advantages of EDM?
Advantages of EDM – part geometry
- Thin walls are possible.
- Cut internal corners with very small radii.
- Cut thin slots in extrusion dies with wire EDM.
- Produce blind and high aspect ratio pockets with sinking EDM.
- Produce non-round openings and cavities.
- An alternative to broaching for 2D shapes like gears.
What are the application of EDM?
EDM is also known as spark machining, wire burning or wire erosion. It is a manufacturing process where desired shape is obtained by using electrical discharges. EDM used for machining hard material, which is electrical conductor. The work place and tool are separated by gap called spark gap.
How much does an EDM machine cost?
Generally economical, the GE Series has many of the same standard (and optional) features as the other AccuteX EDM models, starting at $89,900. AccuteX EDM also offers a full line of ancillary EDM machines such as EDM drills and EDM die sinkers in both economical ZNC and multi-axis CNC models.
Why dielectric is used in EDM?
Dielectric is an important parameter in EDM and plays a crucial role in determining high material removal rate (MRR) and surface finish during operation. The dielectric fluid behave as a medium which controls the electrical discharge and absorb heat during process.
What is the advantage of using EDM?
Advantages of EDM – part geometry Thin walls are possible. Cut internal corners with very small radii. Cut thin slots in extrusion dies with wire EDM. Produce blind and high aspect ratio pockets with sinking EDM.
Which is disadvantage of EDM?
Disadvantages of Electrical Discharge Machining The slow rate of material removal. The additional time and cost used for creating electrodes for Ram/Sink EDM. Reproducing sharp corners on the work piece is difficult due to electrode wear.
Is EDM expensive?
EDM wire, at its current cost of approximately $6 a pound, is the single highest cost related to the use of WEDM technology. The faster a machine unspools wire, the more it costs to operate that machine.
How does EDM work?
How Wire EDM Works. Wire EDM machining (also known as “spark EDM”) works by creating an electrical discharge between the wire or electrode, & the workpiece. As the spark jumps across the gap, material is removed from both the workpiece & the electrode.
What is EDM cutting?
EDM (Electrical discharge machining) wire-cutting, wire burning, wire-cut EDM or wire erosion, is a process in which holes are cut out of materials with the use of electrical discharges.
What is wire EDM?
Definition of Wire EDM. Electrical Discharge Machining (EDM), a manufacturing process whereby a desired shape is obtained using electrical discharges, is primarily used to cut hard metals and other materials that would be impossible to machine with traditional techniques.
How does electrical discharge machining work?
The process of electrical discharge machining works by utilizing an electrical discharge or spark to create a product. This discharge is the result of two electrodes that are separated by a specialized fluid, known as a dielectric liquid, which is then subject to electrical current.