Type 7 code (fast wire cutting machine)

 

7 group code (EDM machine)

 

K machine characteristic code (CNC)

 

D Machine category code (electric machining machine)

Wire cut Electrical Discharge Machining (WEDM) is a category of electrical machining. The wire-cutting machine was also invented in the former Soviet Union in 1960. Its basic physical principle is that free cations and electrons are piled up in the field, which soon constitutes a Conductive channel that is ionized. The wire cutting machine was developed by the former Soviet Union Lazarenko to study the phenomenon that the switch contacts were damaged by spark discharge corrosion. It was found that the instantaneous high temperature of the spark can cause some of the metal to melt, oxidize and be corroded, and then initiate and An electric spark machining method was invented.

At this stage, a current is formed between the two plates. Leading to numerous collisions between particles, forming a plasma zone, and quickly rising to a high temperature of 8000 to 12000 degrees, melting some materials instantaneously on the surface of the two conductors, and at the same time, forming a bubble due to vaporization of the electrodes and the dielectric fluid, And its pressure gauge rises until it is very high. Then the current is stopped, the temperature is suddenly lowered, causing the bubble to blast inward, and the generated power throws the molten material out of the crater.

The mechanical part of the line cutting machine is the base, and its accuracy directly affects the working accuracy of the machine tool, and also affects the full play of the electrical function. The mechanical system consists of the machine bed, coordinate table, wire organization, wire frame structure, taper structure, smooth system and so on. The machine bed is generally a box structure, which is a device channel for supplying various components and is closely related to the accuracy of the machine tool. The coordinate workbench is generally composed of a cross-drag, a tumbling guide, a screw motion pair, a gear transmission structure, and the like.