HOMEMADE ELECTRONIC WORKBENCH HOW TO
On this web site you will find information on how to build and operate your own bench-top EDM It is my intent to fill this void by providing information on building a bench top size EDM which has the capability of performing real work and is reasonable in cost. There are few, if any, affordable bench top machines available for home or small machine shop applications. Most EDM machines are large commercial units that cost many thousands of dollars and occupy quite a large footprint in the shop. Generally speaking, the hardness of the work piece has little effect on the ability to erode it this is one of the biggest advantages of the EDM process. It is possible to erode virtually any shapes into materials that will conduct electricity even some semiconductor materials may be machined via this process. It can be used to produce adjustable DC voltages. The EDM process is repeated thousands (even millions) of times each second. If youve been doing any circuitbuilding or electronic engineering technician work, you know how important a DC power supply is. The solidified metal partials are trapped in the filtering system. The dielectric fluid quickly cools the vaporized metal and removes it from the gap area. As each spark is discharged from the electrode (the cutting tool) to the work piece, a small amount of metal is vaporized and a crater is left in the work piece. The automated servo control system maintains the appropriate separation of the electrode and work piece. For the gap to become conductive the applied voltage is usually on the order of 100VDC Servo head The small (few thousandths of an inch at most) gap becomes conductive in the presence of an electrical field.
A pulsed electrical field is between the electrode and the work piece (known as the gap). The work piece is placed in the work tank which is filled with a hydrocarbon dielectric. A good workbench for electronics is heavy on storage for all the delicate and unwieldy pieces that come with creating and repairing electronic fixtures, appliances, and items.
HOMEMADE ELECTRONIC WORKBENCH GENERATOR
The electronic components include the pulse generator and control system for the Z axis servo. EDM Work tank & Servo headĪn EDM system is comprised of a dielectric reservoir and work tank, as well as a pump and filtering system. For example, if a square electrode were used the resultant shape would be a square hole in the work piece. Therefore, it is possible to erode or “burn “electrically the reverse shape of the electrode into the work piece. Electrical Discharge Machining What is it?Įlectrical Discharge Machining ( EDM) is a process that uses electrical discharges emitted from an electrode to erode an electrically conductive material.
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