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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

How to maintain the car tire battery air conditioner correctly

  Tire

Automobile tires have “ages”. Even a brand new tire will age if stored for more than four years. The main material of tires is rubber, and the characteristic of rubber is that it will age after long-term use or storage. Tyres can affect the performance of the vehicle, and in the worst case, a puncture accident can endanger lives.

It is very simple to identify the production date of a tire. A string of 4 digits can be found near the wheel hub. The first two digits indicate the production week and the last two digits indicate the year of production.If the car is mainly to replace the tires, you must see the production date clearly when selecting.

In addition, car owners must not blindly upgrade their tires, otherwise it will cause safety hazards.After determining the tire specifications, you must choose tires with the same pattern to ensure the safe use of the upgraded vehicle.If the tire wear degree, structure and specifications are inconsistent, it will not only affect the service life of the tire, but more importantly, it will cause the brake resistance of the car to be inconsistent. When the car needs to brake at high speed, the resistance of the tire is different and the force on the four wheels is uneven. , It is very easy to cause traffic accidents caused by vehicle out of control.

It should be noted that when upgrading tires, it is best to replace all four tires at the same time.If you can’t replace them at the same time, at least keep the left and right tires the same, so that you can avoid sideslip caused by the difference in friction between the left and right tires when you brake suddenly.

Battery

In car maintenance, the maintenance of the battery is also very important. If you develop bad habits, it will shorten the service life of the battery or cause damage.The battery life is generally 2 to 3 years.If the user privately installs some electrical appliances that did not exist before, such as a subwoofer, it will cause excessive use of the battery.

Nowadays, there are more and more electric devices in cars, so when car owners use these electric devices, try not to overload the battery.Taking power windows and sunroofs as examples, car owners should complete their lifting and closing before the engine is turned off, because if the engine is turned off, power generation will be stopped. At this time, raising and lowering the windows will increase the load on the battery, which is likely to cause damage to the battery. damage.

The same is true for car lights. If you want to turn off the fire, there is no special need. You should turn off the headlights first, and then turn off the fire. When starting the car at night, you should also turn on the headlights first and then turn on the headlights to minimize damage to the battery.If you let the battery work when the engine is stopped, you must prevent the battery from losing power, because if the power is lost, it is easy to cause damage to the battery. If the power loss is serious, the battery will be scrapped in advance.

air conditioning

Automobile air-conditioning evaporators, fans, etc. have been in a closed and dark state for a long time, and the internal environment is hot and humid.After the impurities, dust, bacteria, and viruses in the air enter the inside of the air conditioner, they bond with the condensed water and block the evaporator and other components.Over time, a lot of dirt, nicotine, mold, fungus, etc. adhere to it.Molds and fungi will multiply quickly and produce rotten odors of organisms. These odors will be mixed in the air-conditioning when the air conditioner is turned on, polluting the entire interior of the car, and often make drivers and passengers feel uncomfortable.

Before using the air conditioner, it is recommended that the car owner clean the air conditioner pipeline and evaporator. At present, there are three methods for car air conditioner cleaning in the car service market:

One washing method is disassembly and washing. The disassembly and washing method is very troublesome, time-consuming and laborious, and it is easy to cause damage to the air conditioner during the disassembly and washing process;

The second method is steam cleaning. This method was popular in the past two years. However, since steam cleaning air conditioners can easily cause damage to the circuit boards on the car, there are fewer and fewer steam cleaning car air conditioners;

The third method is to clean with air conditioning cleaning fluid.Because the cleaning fluid has a unique chemical composition, it has strong decontamination ability in the automobile air conditioning system, keeps the inner wall of the evaporator and the condenser clean, and inhibits the generation of dirt, thereby effectively improving the heat exchange of the evaporator and the condenser The efficiency and the fluidity of the refrigerant achieve the effect of rapidly reducing the temperature of the air outlet and making the air-conditioning more sufficient.

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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