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Working principle of slow wire processing

 Slow wire walking, also called low-speed wire walking, is a kind of CNC machining machine tool that uses continuously moving fine metal wire as an electrode to pulse spark discharge on the workpiece to generate a high temperature of over 6000 degrees, ablate metal and cut into a workpiece. The principle of wire processing is the phenomenon that there is a gap between the wire electrode and the workpiece, and the metal is removed by continuous discharge. Since the slow-moving wire cutting machine adopts the method of wire electrode continuous feeding, that is, the wire electrode is processed during the movement, so even if the wire electrode is worn out, it can be continuously supplemented, so it can improve the machining accuracy of the parts and slow the wire. The surface roughness of the workpiece processed by the cutting machine can usually reach Ra=0.8μm and above, and the roundness error, linear error and dimensional error of the slow-moving wire cutting machine are much better t

Classification of CNC Machining Occupation Levels

1. Blue-collar layer:   That is, CNC machining operation technicians, proficient in machining and CNC machining process knowledge, proficient in the operation and manual programming of CNC machine tools (attributes: automated machine tools), understand automatic programming and simple maintenance of CNC machine tools (attributes: automated machine tools), such There is a large market demand for personnel, and they are suitable for operating workers of CNC machine tools (attributes: automated machine tools) in the workshop, but due to their single knowledge, their wages will not be much higher.   2. Gray collar layer:   One, CNC machining programmer:   Master the knowledge of 5 Axis CNC machining Aluminum   technology and the operation of CNC machine tools (attributes: automated machine tools), be familiar with the design and manufacturing expertise of complex molds (title: mother of industry), and be proficient in 3D CAD/CAM software, such as UG, GOOGLE PRO/E, etc. ; Familiar with CNC

Elimination of Gear Backlash in CNC Machining Feed System

Elimination of Gear Backlash in CNC Machining Feed System   The transmission gear in the feed system of the CNC machining machine tool must eliminate the transmission gap between the meshing gears as much as possible, otherwise the motion will lag behind the command signal after each reversal of the feed system, which will affect the machining accuracy (accuracy) ). There are the following two common methods for CNC machining machine tools to eliminate the transmission gear gap.   1. Rigidity adjustment method   The rigid adjustment method is an adjustment method that cannot be automatically compensated for the tooth side clearance after adjustment. Therefore, the pitch tolerance and tooth thickness of the gear must be strictly controlled, otherwise the flexibility of the transmission will be affected. This adjustment method has a relatively simple structure and a better transmission rigidity.   (1) Eccentric shaft adjustment method   As shown in Figure 610, the gear 1 is mounted on th

How to use the CNC wire cutting machine reasonably?

Single-board microcomputer WEDM microcomputer controllers were produced earlier. At present, few WEDM manufacturers produce them. However, there are a large number of users who use them. Medium-wire wire-cutting is a technology-intensive product and belongs to precision processing equipment. Wire cutting operators must undergo rigorous training before using the machine tool and obtain a qualified operation certificate before they can work on the machine.



    In order to use the WEDM machine safely, reasonably and effectively, the cnc operator is required to abide by the following operating rules:

   (1) Have a full understanding of the performance and structure of wire feeding in self-use, and be able to master the operating procedures of the machine tool and comply with the safety production system:

   (2) Processing within the allowable specification range of the medium wire cutting, do not work with overweight or over-travel;

   (3) Always check the power cord of the middle wire machine tool, whether the overtravel switch and the reversing switch are safe and stable, and work with faults is not allowed;

   (4) According to the lubrication parts specified in the middle wire operation manual, regularly inject the specified lubricating oil or grease to ensure the flexible operation of the middle wire, especially the guide wheels and bearings should be regularly inspected and replaced;

   (5) Before processing, check whether the working fluid of the wire is sufficient and whether the water pipe and nozzle are unobstructed 

   (6) After get off work, clean up the working area of ​​the middle wire, clean the fixtures and die casting parts, etc.;

  (7) Regularly check whether the wire-moving electrical equipment is damp and reliable, and wipe and clean it to prevent metal objects from falling in;

  (8) Observe the system of fixed man and machine, and maintain regular centering and wire cutting;

 

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