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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

Analysis on the runout of automobile reducer

If the imprint of the gear meshing area is out of the small end, the shim at the lower part (near the side of the gear) of the large bearing (7609E bearing) on ​​the driving street wheel should be appropriately added. If the footprint of the meshing area is close to or out of the big end, the shim should be appropriately reduced. Generally, the gear manufacturer has its own specific base for the adjusting shim. In addition, mark the increase or decrease according to the specific situation of each pair of gears. If it is marked with +2, the gasket should generally be reduced by 0.2 mm on the basis of the base; if it is marked with -20, the gasket should generally be increased by 0.2mm piece.

In the actual assembly process, if the gear and the large plane of the differential housing are qualified and the assembly process is clean, the runout should not exceed 0.70mm, because when the large plane of the differential housing is turned, the machine tool should be adjusted properly. , The large plane runout of the shell will not exceed 0.30mm, so the full standards of each manufacturer shall not exceed 0.05mm. Although there is no clear regulation on the runout of the passive gear tooth back, under normal circumstances, its runout will not exceed 0.02mm.

More than 90% of the abnormal noise of the new car reducer is caused by the large amount of runout after the assembly of the passive wheel, or the incorrect position of the meshing area of ​​the active and passive gears. The excessive runout of the tooth back is mainly caused by the excessive runout of the large plane of the differential housing. The material of the shell is gray cast iron, because the material is soft, it is easy to deform once bumped. The amount of swing far exceeds the amount of gear clearance, which will inevitably cause a violent impact during the operation of the active and passive gears, so that the lubricating oil cannot form an oil film on the gear surface, which reduces the life of the reducer gear that can be used under normal conditions of 150,000 km to only 1,000 km. about. For 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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