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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

There are many benefits of turning micro oil mist lubrication

In most cases, lathes use cutting fluid lubrication and cooling. The use of a large amount of cutting fluid has a great impact on the operating environment and the health of the operators. At the same time, the processing cost of cutting waste fluid is also very high. Due to the many problems existing in cutting fluid lubrication and cooling, new technologies have emerged to replace the traditional lubrication and cooling methods.
In the turning process, the area where the cutting tool is prone to wear is the rake face. Therefore, spraying and penetrating a small amount of lubricating oil mist into this during the machining process will greatly reduce the friction. When applying trace oil mist lubrication to the lathe, the following should be paid attention to: For the external injection system lathe, the installation of the trace lubrication system should not affect the processing and the movement of other parts; the internal cooling lubrication lathe is the lubricant sprayed in the form of suspended oil mist particles. The cutting area must maintain a reliable flow of suspended particles. Therefore, the design of the machine tool should consider ensuring reliable transportation of suspended particles and reliable sealing of the passage. The matching of the optional cutting tool jacket and the cutting tool must ensure that the lubricating oil mist particles can reach the cutting area. In lathe processing, the amount of back-cutting, feed rate, and cutting linear speed are the main factors that affect the processing quality and processing efficiency, in order to improve the impact of cutting fluid on the processing environment and the adverse impact on the maintenance of the lathe. It is necessary for the research and application of micro-oil mist lubrication of lathes. The advantages of the micro-lubrication method are:

1. Reduce cutting costs and maintenance costs.
2. The machine does not need to consider the protection design to prevent leakage, which can increase the life of the electrical system and reduce the maintenance cost.
3. Better processing quality and higher processing efficiency can be obtained.
4. It can increase the processing life of cutting tools.
The air source pressure of the micro-oil mist lubrication system of the lathe can operate normally at 5-7bar, and better results can be obtained when the air source pressure is increased to 8-10bar.

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