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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

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

Metal machining benefits from micro-lubrication technology

MQL is a green manufacturing technology. During the cutting process, high-speed mist particles are sprayed to the cutting point, which increases the permeability of the lubricant, improves the lubrication effect, and improves the surface quality; the amount of lubricating oil is between 5-50ml/h (The number of nozzles set according to the needs is the main factor that determines the consumption), which is one ten thousandth of the cutting fluid. The advantages are: reduced lubricant costs, workpiece drying without cleaning processes, no waste liquid treatment, improved processing environment, etc.


At present, MQL micro-lubrication technology has been used in domestic auto parts manufacturing equipment, such as crankshaft oil hole special machine, balancing machine, main journal cylindrical car, connecting rod and gear machine tool. While the micro-lubrication technology is generally recognized by machine tool manufacturers and end users, it is also facing the problem of how to make the micro-lubrication technology fully play its role and improve processing efficiency. It is necessary to discuss the machine tool design, processing technology, lubrication mechanism, etc.

In the case of the same cutting conditions, the idea of ​​using micro-lubrication technology to reduce processing costs is to optimize the processing route:

(1)
Processing procedures and processing parameters: cutting tool path, feed, depth of cut, cutting speed.

(2) Cutting tools: geometry, materials, coating technology.

(3)
Clamping system: clamping method and efficiency, clamping position, clamping accuracy, clamping force.

(4) The processed material: the status of the blank and the characteristics of the material.

(5)
Machine tool: machine speed.

Processing any workpiece requires a comprehensive consideration of how to reduce processing costs. Therefore, according to the method of optimizing the route of the processing technology, start with the easy implementation, according to the order of processing procedures and processing parameters, cutting tools, clamping systems, processed materials, and machine tools Adjust and optimize.

Economic benefits:

1.
Reduce processing costs: MQL lubrication technology is a lubricating oil consumption type lubrication technology, so there is no waste liquid treatment cost, including cutting fluid procurement, storage, transportation and disposal related costs.

2.
Fully save the power consumption of the cooling pump when the cutting fluid is cooled.

3. After the process optimization is completed, the tool life can be expected to be extended

4.
Subsequent cleaning/cleaning of the workpiece can be eliminated, resulting in savings

5. Dried iron filings can be recycled as recyclables

6.
The consumption is about 1/30 of that of wet cutting, and the cost is about 54 of that of wet cutting

7.
Reduced energy consumption, with an average energy saving of 2.2kw/machine tool (compared with traditional cutting fluid processing)

Environmental benefits:

(1) Environmental protection: The processing environment has been greatly improved. The inhalable particles in the workshop meet the standards, and the operators have no occupational disease risk. Plant-based synthetic lubricants are used, no cutting waste oil and waste liquid are generated, and the environment will not be polluted.

(2) Clean operating environment: Because MQL lubrication technology uses very little oil, it is a full-consumption lubrication, and it is very easy to clean the machine tool and factory environment.

(3) Exempt cutting fluid (oil) discharge

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