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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 daily maintenance rules

 

The daily tire maintenance should emphasize that the correct air pressure should be maintained when driving. The tire sidewall has the highest air pressure value provided by the car manufacturer, and the air pressure of all tires (including the spare tire) should be checked at least once a month when they are cooled. However, it is not enough to just check. If you find that the air pressure is decreasing too fast, you must find out the reason to avoid leaving hidden dangers and being caught off guard at a certain moment. Staples, cuts, aging and cracking of valve rubber may all be the culprits. If it is a new car, check whether the edge of the rim rim and the tire are in good fit, and whether there has been a water leak check and an air leak test. After finding out the cause, you can find an experienced dealer or a large tire shop to inquire whether it is worth repairing, because behaviors such as nailing will cause damage to the internal structure of the tire, which is not worth continuing to use. In any case, do not exceed the reasonable speed required by driving conditions and legal restrictions. If you encounter obstacles such as rocks, potholes, etc. ahead, you should avoid or pass slowly. Because even if the inflation pressure is correct, at high speeds, if the tire encounters road obstacles, the probability of damage is higher than at low speeds.

The tread of a radial tire has a steel wire belt layer, but the tire side is not covered by a steel wire layer. When driving at a high speed, the tire hits pits and other foreign objects, causing the tire to severely squeeze between the impact object and the rim flange Deformation can cause the cord fabric to break, and the air inside the tire will push up from the broken yarn to form a bulge. Continued use of such a tire will cause more and more yarn breakage, and eventually a puncture. Always check the condition of the tire, including whether there are bulges, cracks, cuts, studs, and abnormal tire wear. Some new cars have not been bought for long, and the tires on both sides of the car wear more on one side and less on the other, or the shoulder wear is faster than the rest of the tread. This is caused by poor tire positioning. Four-wheel positioning should be considered. Even if the vehicle is traveling less than 8,000 kilometers at this time, the tires bought for hundreds of dollars will easily be eaten. Don’t simply change the tire. The vehicle’s own condition will not change, and the new tire will still cause problems. This is as meaningless as changing your shoes instead of having a problem with your feet. If the tire shakes excessively, the wheel may be unbalanced. This situation will not only shorten the life of the tire, but also affect the handling of the vehicle, which may be dangerous. If the tire is worn to the wear indicator, stop using it.

There is a wear indicator at the position of 1.6 mm left in the tread groove. Worn to this mark, it must be replaced. It is dangerous to use tires that exceed the mold consumption indicator, especially when driving on wet ground. Because the pattern is ground, the drainage performance of the tire is greatly reduced, and the tire and the water surface basically form a water-mill state, which hinders the contact between the tire and the ground, and the grip is greatly reduced, which poses a safety hazard. The spare tire should be avoided near sunlight, oil, acid, and hydrocarbons, which will erode the tire. All tires should be stored in a cool, dry and dark room to avoid the danger of moisture accumulating in the tires. Due to pressurization, liquid may enter the carcass layer through the inner liner of the tire, which can cause sudden damage to the tire. When buying tires, the storage environment of tires can also be used as an aspect of inspecting tire shops.

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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