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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

Automobile automatic transmissions require more careful care and maintenance

The traffic conditions in the city are getting worse and worse. Stop-and-go in traffic jams is exhausting for owners of manual-shift cars. Therefore, the light and trouble-saving automatic transmission car has almost become the first dazzle of most urban residents. Although the automatic transmission car is easy to use, but because the automatic transmission system is a very sophisticated assembly, especially the manual automatic transmission Its structure is even more complicated. Therefore, once the automatic transmission fails, it is very troublesome and expensive to repair. In view of this, automatic gearboxes need more careful care and maintenance.

Regularly check the transmission oil

A kind of lubricating oil called ATF is injected into the automatic gearbox. In addition to lubricating and cooling down, its role is to transmit the power between the engine and the gearbox. The working temperature of ATF oil is generally around 120 degrees Celsius, so the quality of the oil is very high, and it must be kept clean.

Always check whether the automatic transmission oil level is normal. The inspection method of automatic transmission oil is different from that of engine oil. The engine oil is checked in a cold state, and the transmission oil needs to be preheated to about 50°C, and then the gear lever stays in each gear for 2 seconds. Put it in the parking block. At this time, the normal oil level of the oil dipstick should be between the highest and lowest lines. If it is not enough, add oil of the same quality in time.

In general, whether it is a manual gearbox or an automatic gearbox, it is recommended to change the automatic transmission oil every 12 months or 20,000 kilometers. Some models have instructions for 24 months or 40,000 kilometers. However, the above is only a general recommendation. Due to the special conditions of Beijing’s vehicles, heavy sandy weather, road congestion, and poor air quality, it is recommended that vehicles should be inspected regularly and replaced with ATF in time.

Change the gearbox oil correctly

Generally, when replacing the automatic transmission oil, the screw in the oil bottom of the automatic transmission is usually removed to leak the old oil and then add new oil, but this can only replace about 30% of the new oil and 70% of the old oil. Still remaining in the gearbox. If the oil is changed by removing the oil pan, the oil change rate can reach 70%, which can actually ensure the health of the gearbox. However, the current better method of oil change is dynamic oil change. Special gearbox cleaning equipment is used. During the operation of the gearbox, the old oil is fully circulated and drained before adding new gearbox oil to change the oil. The rate is as high as 90%.

GM, Toyota, Ford and other brands of automatic transmissions have different friction coefficients, so ATF oils are different and cannot be mixed. Mixed use of ATF will cause damage to the friction lining of the gearbox, slipping of the clutch and brake, etc., and in severe cases, the friction lining will be destroyed.

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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