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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

Brakes are key parts of cars

Users have higher and higher requirements for the quality of automobiles and their parts. As the key parts of automobiles, the quality of brakes and the reliability of their functions are particularly important. Oil leakage of the brake cylinder is one of the most prominent quality problems in auto parts, and it is a hidden quality problem. The manufactured products cannot find any problems in appearance, and there will be no oil leakage at the beginning of use. However, some products will experience oil leakage after using for a month or longer. This phenomenon occurs in many products. Everything happened.

It is difficult to solve this problem, and it is difficult to verify. In recent years, the author has conducted some explorations and studies on the oil leakage problem of the brake wheel cylinder, and obtained some results in terms of the key causes of the oil leakage of the brake wheel cylinder and the solutions. Experience and effective methods are now introduced as follows. Choose a reasonable finishing method for the cylinder bore of the sub-cylinder, and strictly control the roughness of the cylinder bore. There are two ways of finishing: rolling and Qi grinding.

Rolling processing is indeed a more advanced finishing process at present, but the sub-cylinder made of HT250, during the production of the blank, due to minor changes in the material, pouring, aging and other reasons, the partial hardness of the sub-cylinder blank will appear uneven. The rolling pressure is difficult to smooth the local hard spots. During the rolling process, the surface of the sub-cylinder hole will also increase the hardness, and the local contour peaks and valleys of the cylinder hole (the peaks and valleys will accelerate the wear of the sub-cylinder cup, damage the cup and cause oil leakage ), it will be more difficult to eliminate. In addition, due to the poor plasticity of the cast iron material and the sensitivity to notches, after calendering, the surface of the cylinder bore is microscopically jagged. During the use of the brake, the cylinder piston moves axially, and the lip of the cup is tightly pressed by high pressure. If the cylinder hole is moved, the axial groove will be drawn, which will lead to oil leakage.

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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