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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

How Do Cnc Swiss Machines Work

How Do Cnc Swiss Machines Work Save 0 What Is Swiss Machine –The full name of the walking CNC lathe, it can also be called the spindle box mobile CNC automatic lathe, the economical turning and milling compound machine tool or the slitting lathe. It belongs to precision machining equipment, which can complete compound  machining such as turning, milling, drilling, boring, tapping, and engraving at one time. It is mainly used for batch  machining of precision hardware and special-shaped shafts. This machine tool first originated in Germany and Switzerland. In the early stage, it was mainly used for precision machining of military equipment. With the continuous development and expansion of industrialization, due to the urgent needs of the market, it was gradually applied to the  machining of civilian products; the development of similar machine tools in Japan and South Korea Earlier than China, it was mainly used in the military industry in the early days. After the war, it was gradually

Spring Design Attention And Roll Forming Method

Spring Design Attention And Roll Forming Method The coiling characteristics and methods of springs are divided into cold coiling method and hot coiling method. Cold winding method: When the diameter of the spring wire is less than 8mm, the cold winding method is adopted. High-quality carbon spring steel wire is usually first cold drawn and then heat treated. After winding, it is generally not quenched, but only tempered at low temperature to eliminate the internal stress during winding. Hot-rolling method: Springs with larger diameter (>8mm) spring wire should use hot-rolling method. Hot rolled springs must be quenched and tempered at medium temperature. The Design Process Of Various Springs ·          Installation space: When designing a  compression spring , it is necessary to have a clear understanding of the space required for the installation of the spring, in order to effectively grasp the basic manufacturing conditions of the compression spring, including the outer diam

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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