What kind of processing method is EDM 5

EDM is a new process that is completely different from machining.

With the development of industrial production and the progress of science and technology, new materials with high melting point, high hardness, high strength, high brittleness, high viscosity and high purity continue to appear. There are more and more workpieces with various complex structures and special process requirements, which makes traditional machining methods impossible or difficult to process. Therefore, in addition to further developing and perfecting machining methods, people are also striving to find new processing methods.

EDM can adapt to the needs of production development and show many excellent properties in applications, so it has been rapidly developed and increasingly widely used.

The characteristics of EDM are as follows:

1.The high energy density of pulse discharge makes it easy to process workpieces of special materials and complex shapes that are difficult or impossible to process with ordinary machining methods. It is not affected by the hardness of the material, and it is not affected by the heat treatment condition.

2.The duration of pulse discharge is extremely short, the heat conduction and diffusion range generated during discharge is small, and the material is affected by heat in a small range.

3.During machining, the tool electrode is not in contact with the workpiece material, and the macroscopic force between the two is minimal. The tool electrode material does not need to be harder than the workpiece material, so the tool electrode is easy to manufacture.

4.It can reform the structure of the workpiece, simplify the processing technology, improve the service life of the workpiece, and reduce the labor intensity of workers.

Based on the above characteristics, the main uses of EDM are as follows:

1) Manufacture of stamping dies, plastic dies, forging dies and die casting dies.

2) Machining of small holes, deformed holes and threaded screw holes on cemented carbide.

3) Cut out the parts on the sheet metal.

4) Processing of narrow seams.

5) Grinding flat and round surfaces.

6) Others (such as strengthening the metal surface, taking out the broken tool, piercing the quenched parts, directly machining the parts with complex profiles, etc.). Hope it works.

First of all, this processing belongs to the category of medium and fine machining, which mainly relies on the physical power generation characteristics of the two electrodes, converts electrical energy into heat energy, and relies on high-temperature corrosion to process.

There is no macroscopic processing, but microscopic processing The force generated during processing is very small, and it is possible to process complex shape materials and difficult-to-process materials (to conduct electricity, there may be new processing methods that can also process non-conductive materials).

1. The electrodes are different: EDM and wire cutting are both manipulating the high-frequency discharge of electric pulses to electro-etch the workpiece, except that EDM is to manufacture the electrode in advance. What kind of electrode is to be manufactured, and wire cutting is to electro-etch the workpiece by manipulating the conductive molybdenum wire.

2. The processing principles of the two are different: the secondary processing object of the EDM forming machine tool is the general fine markings or curved surface for printing, and the EDM wire cutting machine tool is the workpiece of the secondary processing plane. The activity of wire EDM is to move the workpiece, and the EDM is to move the electrode to achieve processing.

3. Different suitability: EDM can process through holes and blind holes, and is suitable for processing cavities and engraved text, markings, etc. of plastic molds and other parts with complex shapes, while EDM wire cutting can only process through holes, which can easily process small holes, narrow seams with complex shapes and various parts with complex shapes.

EDM and EDM wire cutting both belong to the scope of high-frequency electric pulse processing, and the difference between the two is that EDM is suitable for processing such as impermeable or transparent cavities and hole types; Wire EDM, on the other hand, can only process transparent cavities and hole types. In die-sinking EDM, different shapes of electrodes need to be made specifically for it, while wire EDM only needs to use molybdenum wire to process.

The essence is the same, they all belong to the category of electrical processing.

EDM is the process of making electrodes (copper or graphite) in the required shape and processing the shape of the electrode on metal (mostly carbon steel). Holes that can be punched after installing the small hole machine.

Wire cutting is divided into fast wire walking and slow wire cutting. Fast wire is used to process metal with molybdenum wire, which can cut various shapes, and quenched workpieces can also be used, and the cost is now very low for slow wire.

Let's just say it simply, there should be relevant introductions on the Internet.

Both belong to electrical machining.

The discharge medium is different: copper or stone tomb electrode for EDM molding, the electrode shape is different; Wire cutting is processed with molybdenum wire.

Different uses: EDM is mainly used for cavity shape processing of molds, and wire cutting is mainly used for contour cutting processing.

EDM is a processing method that uses the gap between the electrode and the workpiece to ablut the metal, and its virtual shirt can be used to cut and cut the surface (cavity) forming processing, the former uses the tool electrode to wire cutting, often called wire cutting processing, and the latter is called EDM processing.