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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

The difference between the cooling fan ball bearing

The difference between the cooling fan ball bearing

 

The cooling fan has single ball and double ball bearings, which can be selected according to different needs. The following will introduce the difference between the two bearings.

 

single ball bearing

 

The single ball bearing adopts the form of sliding friction and ball friction. One ball bearing and oil-impregnated bearing are used to reduce the cost of the double ball bearing. The rotor and the stator are lubricated with balls, and lubricating oil is added. The service life is about 30,000-40,000 hours. .

 

Advantages: longer life than oil-impregnated bearings, stable operation, low cost

 

Disadvantages: Although the noise is small, the noise will increase for a long time

 

Double ball bearing

 

The double ball bearing is a high-end bearing. It adopts the form of rolling friction. There are two balls. The bearing has several tiny steel balls around the axis. When the fan blade or the axis rotates, the steel balls rotate along with it. Because it is a sphere, the friction force will be reduced. It is relatively small, and will not leak oil. It has a long service life and a service life of about 50,000-70,000 hours. It has good performance, high speed and large air volume.

 

Advantages: good sealing performance, long service life

 

Disadvantage: high cost

 

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