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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

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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