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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

Analysis on the matching of auto parts industry

China’s auto parts industry is highly fragmented, a single individual has little capital, and its competitiveness is weak. It cannot form a strong competitive advantage by itself. At present, China’s auto parts industry is still at a low level, with repeated fragmentation, low concentration, and single supporting facilities. Most of the auto parts companies only provide a complete set of auto parts, unable to form a large-scale production, can not effectively reduce the cost of enterprises. At the same time, the product structure of auto parts is unreasonable. There are too few high-tech products and high value-added products. They are mainly concentrated in labor-intensive low value-added products. The scale is small, the product types are more, and the level of specialization is low. Low production efficiency.

At 20°C to 40°C, the NOx mass fraction shows an upward trend. This is due to the decrease in the proportion of premixed combustion at the initial stage of combustion and the earlier occurrence of the highest explosion pressure. When the intake air temperature is from 40℃ to 50℃, the mass fraction of NOx shows a downward trend. This is due to the shortening of the combustion reaction time and the decrease of the maximum explosion pressure. In addition, the combustion avoids the top dead center and more combustion is concentrated in the downward phase of the piston. reason.

In summary, lowering the intake air temperature can effectively reduce soot and NOx emissions. Under the conditions of an intake pressure of 2.6MPa and an EGR rate of 0.3, the effects of different intake temperatures on the combustion of high-density and low-temperature diesel engines are studied, and it is concluded that the combustion mode of high-density and low-temperature diesel engines has greater advantages in achieving low emissions and high thermal efficiency. potential. Due to the low market access standards in China’s auto parts industry, more and more manufacturers have entered, which has led to a narrowing of the distance between price and cost. The specialization of technical equipment and labor organization has promoted the improvement of the efficiency of enterprises in the industrial cluster.

The automotive parts and parts machining, PTJ Shop offers the highest degree of OEM service with a basis of 10+ years experience serving the automotive industry. Our automotive precision shop and experts deliver confidence. We have perfected the art of producing large component volumes with complete JIT reliability, backed by the quality and long-term reliability our customers expect.

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