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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

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

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

Tire rotation can extend the life of the spare tire and also has a shelf life


Many car owners will take their families out for self-driving tours, and the tires of their cars are also showing varying degrees of wear and tear, and many car owners are a little confused about the replacement of the tires.

Tire rotation can prolong life

I learned from many car 4S shops that now car owners are very careful about car maintenance, but many car owners think of changing tires when they encounter problems. In fact, it takes a lot of money to change tires frequently. In many cases, tire replacement is just a matter of cost. It can prolong the life of the tire, and the reasonable rotation can extend the life of the tire by 20%. It saves a lot of money for the owner.

The after-sales service manager of the Dongfeng Nissan franchise store, Wang? This Dan? Hemorrhoids ㄆ诨毨? ldquo;Rotation” is to ensure that each tire reaches the balance of work intensity. However, the tire replacement is also regular and cannot be arbitrarily. Change location.

Generally speaking, there are two ways to change tires. The first way is to swap front left tires and rear left tires, and swap front right tires and rear right tires; the second way is cross swapping, which means Change the left front tire to the right rear tire and the right front tire to the left rear tire. Relatively speaking, the second method is better.

As for the number of kilometers to be exchanged, the “Vehicle User Manual” of some models recommends that front-wheel drive vehicles should be changed every 8000 kilometers, while four-wheel drive vehicles need to be changed every 6000 kilometers. However, if there is no rotation for more than 20,000 kilometers, and tire wear has formed, it is not recommended to perform tire rotation to avoid deviation. But the king? Chuangyi, Jinghe, 飧赫飧龌龌莩地サ木咛逅鸷Naxie龆?ǎ?庋??W肌?p>    spare tires also have a shelf life

Now, in the process of using a car, most consumers don’t pay much attention to the spare tire, and they always think of the spare tire when the car tire is punctured or punctured. In fact, it is worth paying attention to consumers that if the specifications and structure of the spare tire are the same as the tires normally used on the car, the *scientific* reasonable method is to cross-rotate the spare tire together. In this way, a car will run 5~10. After 10,000 kilometers, the 5 tires (including the spare tire) wear very uniformly and can be replaced directly without wasting the spare tire.

However, because tires also have a shelf life, consumers must check the condition of the spare tire before using the spare tire. After all, the tire is a rubber product. If the spare tire is left for many years, it may crack. It is understood that, generally speaking, the shelf life of tires is calculated from the date of leaving the factory, which is about 5 years. Expired tires cannot be used anymore. Consumers should not be afraid of waste and should dispose of expired tires in time.

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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