First, the classification of CNC EDM wire cutting machine tools
1. Numerical control EDM wire cutting processing
WEDM 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 to cut the workpiece. Cutting processing. 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.
2. Classification of CNC EDM wire cutting machine tools
(1) According to the wire speed: it can be divided into slow wire walking mode and high speed wire cutting mode 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.
Second, the basic composition of CNC EDM wire cutting machine tools
CNC EDM wire cutting machine tools can be divided into machine tool mainframe and console two parts.
Console
The 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 host
The machine main machine mainly includes five parts: coordinate work table, wire feeding mechanism, wire frame, cooling system and bed.
(1) Coordinate table It is used to clamp the workpiece to be machined, and its motion is controlled by two stepping motors.
(2) Wire transport mechanism It is used to control the relative movement between the wire and the workpiece.
(3) Wire frame It together with the wire transport mechanism constitutes the movement system of the wire electrode. 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, while cooling the workpiece and the wire.
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