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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

Hydrostatic guideway of CNC machining lathe

The static pressure slide rail (TTW guide) of the CNC machining lathe transfers the oil with a certain pressure through the throttle to the oil cavity between the sliding surfaces of the slide rail (TTW guide) to form a pressure oil film to float the moving parts , Make the sliding rail (TTW guide) surface in a pure liquid friction state.   CNC machining General CNC machining usually refers to computer digital control precision machining, CNC machining lathe, CNC machining milling machine, CNC machining c17200   beryllium   copper   and milling machine, etc. The feed route of finishing is basically carried out along the part contour sequence. Therefore, the focus of determining the feed route is to determine the feed route of rough machining and idle stroke. In the numerical control processing, the control system issues instructions to make the tool perform various motions that meet the requirements, and the shape and size of the workpiece are expressed in the form of numbers and lette

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

Imported CNC lathe processing machine tool equipment and debugging

After the CNC machine tool is produced by the manufacturer, the machine tool has been subjected to various requirements and inspections, and only after passing the inspection, can it leave the factory. Regarding medium and large CNC machine tools, because the machine tools are large in size and not convenient for transportation, they must be distinguished and transported to the user after they collapse before they can be used before they can be reassembled and debugged. As for small machine tools, the float level gauge does not need to crash the machine tool during transportation, so the installation, debugging and acceptance tasks of the machine tool are relatively simple.

 

After the machine is transported to the user, it can be put into operation formally after simple connection, adjustment of the machine level and trial cutting, and the things required are relatively simple. The following introduces the equipment, debugging and acceptance requirements of small CNC machine tools.

 

First, the initial installation content of imported CNC lathe processing machine tools includes: according to the requirements of the machine tool, select the appropriate position to place the machine tool; read the material of the machine tool to ensure the accurate use of the CNC machine tool.

  

2. Wire connection processed by imported CNC lathes: This part of the content is mainly the main power connection of the machine tool. Although the step of the magnetic cnc milling column level gauge is very simple, if this step is not done well, it will cause unnecessary troubles, or even Severe results will occur. Here are some considerations for power connection:

  

1. Confirm the input power voltage and frequency. The current voltage power supply in our country is: three-order AC 380V; single-phase 220V. Domestic machine tools generally use three-phase 380V, frequency 50Hz power supply, and some imported machine tools do not use three-order AC 380V, frequency 50Hz power supply, and these cnc bending machine tools are equipped with power transformers, and users can choose according to the requirements. The next step is to reflect on the up and down fluctuations of the power supply, whether the glass tube level gauge can meet the requirements of the machine tool, whether there is a large fluctuation in the vicinity of the machine tool that can affect the power supply, if the voltage fluctuation is too large or there is a large-scale equipment, a stabilizer should be installed , Because the power supply does not fluctuate and the electrical disturbance occurs, the machine tool will affect the invariance of the machine tool.

  

2. The phase sequence of the power supply processed by the imported CNC training is confirmed. When the phase sequence is wrong, there is a fuse that can blow the control unit. The method of reflecting the phase sequence is relatively simple. Use the phase sequence to connect to the following figure to measure, when the phase sequence table is in sequence When the hour hand is twisted, the phase sequence is accurate. Otherwise, the phase sequence is wrong. At this time, you only need to swap any two power cords in the UVW three-phase.


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