First, the classification of CNC EDM wire cutting machine tools 1. Brief Introduction to Numerical Control Electric Discharge Machining The EDM is a branch of EDM. It is a process that directly uses electrical energy and thermal energy. It uses a moving wire (electrode wire) as a tool electrode. The workpiece is cut, so it is called wire cutting. In the wire cutting process, the relative motion of the workpiece and the wire is realized by digital control, so it is also called CNC wire-cut machining, which is called wire cutting. Second, the basic composition of CNC EDM wire cutting machine tools (1) Coordinate table It is used to clamp the workpiece to be machined, and its motion is controlled by two stepping motors.
2. Classification of CNC EDM wire cutting machine tools (1) According to the wire speed: it can be divided into slow wire routing and high speed wire cutting machine.
(2) According to the processing characteristics: can be divided into large, medium and small and ordinary straight wall cutting and taper cutting type wire cutting machine.
(3) According to the pulse power supply form: it can be divided into RC power supply, transistor power supply, group pulse power supply and adaptive control power line cutting machine.
3. Model example of CNC EDM machine tool 
CNC EDM wire cutting machine tools can be divided into machine tool mainframe and console two parts.
1. The console console is equipped with a control system and an automatic programming system that allows for automatic programming in the console and digital control of the movement of the machine coordinate table.
2. Machine main machine The machine main machine mainly includes five parts: coordinate work table, wire transport mechanism, wire frame, cooling system and bed. The figure below shows the host of the fast wire cutting machine. 
Fast wire cutting machine host diagram
(2) Wire transport mechanism It is used to control the relative motion between the wire and the workpiece.
(3) Wire frame It forms the movement system of the wire with the wire mechanism. Its function is mainly to support the electrode wire and maintain a certain geometric angle between the working part of the wire and the plane of the table to meet the needs of processing various workpieces (such as tapered workpieces).
(4) Cooling system It is used to provide a working medium with a certain insulating property - working fluid, and at the same time to cool the workpiece and the wire.