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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

Four “misunderstandings” about lubricants

Car lubricants are used very frequently during maintenance. In addition to protecting the engine and reducing the number of oil changes, high-quality lubricating oil can also save gasoline costs. At the same time, be careful not to cause car breakdowns due to improper use of lubricating oil. The “improper” use method generally stems from the four “misunderstandings” of car friends about lubricating oil.
Misunderstanding 1: The amount of lubricating oil should be controlled between the upper and lower scale lines of the oil dipstick. Because too much lubricating oil will escape from the gap between the cylinder and the piston into the combustion chamber and burn to form carbon deposits. These coke deposits will increase the compression ratio of the engine and increase the tendency of knocking; the coke deposits in the cylinder are red hot and easily cause pre-ignition. If they fall into the cylinder, it will aggravate the wear of the cylinder and piston, and will also accelerate the pollution of the lubricating oil. Secondly, too much lubricating oil increases the stirring resistance of the crankshaft connecting rod and increases fuel consumption.
Misunderstanding 2: When the lubricating oil turns black, it is time to change the oil. This understanding is not comprehensive. For lubricating oils that have not been added with a quiet dispersant, the darkening of the color is indeed a sign of severe deterioration of the oil, but the lubricating oil used in modern cars is generally added with a quiet decomposer. This cleanser will wash off the rubber film and black carbon deposits adhering to the piston and disperse it in the oil to reduce the generation of high-temperature deposits in the engine. Therefore, the color of the lubricating oil will easily turn black after a period of use, but at this time The oil has not completely deteriorated.
Misunderstanding 3: Lubricating oil is often added and not changed. It is correct to check the lubricating oil frequently, but only supplementing without replacing can only make up for the lack of oil quantity, but it cannot fully compensate for the loss of lubricating oil performance. During the use of lubricating oil, the quality will gradually decline due to pollution, oxidation and other reasons, and at the same time there will be some consumption, which reduces the quantity.
Misunderstanding 4: Additives are useful. Real high-quality lubricants are finished products with a variety of engine protection functions. The formula contains a variety of additives, including anti-wear agents, and the lubricant* pays attention to the balance of the formula to ensure sufficient performance Play. Adding other additives by oneself will not only not bring additional protection to the vehicle, but it will easily react with the chemical substances in the engine oil, resulting in a decline in the overall performance of the engine oil.

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