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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

Analysis of Misunderstandings in Automobile Maintenance

Caring for a car must pay attention to science. However, some problems often arise in car maintenance. Some people thought they were caring for the car, but in fact they accidentally damaged the car.

Maintenance experts remind you that the following wrong maintenance method is equivalent to destroying the car.

1. Waxing in a circle

The effect is poor. Many people habitually wax the car in a circle. This is an incorrect method. The correct way of waxing is in a straight line, alternating horizontal and vertical lines, and then in the direction of rainwater flow. In this way, the effect of reducing the concentric circular halo on the paint surface can be achieved.

2. Too much oil

Failure When the oil in the engine oil pan is insufficient, the friction between the bearing and the journal will be due to the small amount of oil, poor lubrication, aggravating the degree of wear, and even causing a bush-burning shaft accident. However, if there is too much oil, the crankshaft handle and the big end of the connecting rod will be violently agitated when the engine is working, which not only increases the internal power loss of the engine, but also increases the oil splashing on the cylinder wall and causes the oil burning failure. . Therefore, the oil in the engine oil pan should be controlled between the upper and lower engraved lines on the oil dipstick.

Three, the bolt is too tight

There are many fasteners connected with bolts and nuts on permanent deformation cars. It should be ensured that they have sufficient pre-tightening force, but they should not be over-tightened. On the one hand, the connecting parts will be permanently deformed under the action of external force; on the other hand, On the one hand, it will cause the bolt to produce tensile permanent deformation, and the pre-tightening force will decrease, and even cause the phenomenon of sliding buckle or breaking.

Fourth, the fan belt is too tight

The bearing load is heavy and the temperature is too high in summer. Some drivers think that increasing the tightness of the fan belt will cause the fan belt to be too tight, but they do not know that this is wrong. The fan belt should be properly tight, because too tight will cause excessive bearing load, aggravate wear, and increase power consumption. At the same time, it will also cause the water pump shaft to bend, elongate the belt and shorten its life.

5. The new battery does not charge

The first charge of a battery with a shortened life is called the first charge, and the first charge has a great influence on the service life of the battery. If it is not charged, that is, if it is used directly with “water”, the capacity of the battery is not high and its life will be shortened; if it is directly charged, it will also shorten its life. Generally, the initial charging of the battery is after filling the electrolyte, and then it can be installed and used after charging with a small current for about 1 hour.

VI. Add equipment in the car at will

A personal car that affects driving safety is a mobile home for car owners. There is nothing wrong with pursuing passenger comfort and luxury. However, some car owners install various equipment in the car by themselves. This modification, if not handled properly, will affect the performance and operation of the car. Reliability often brings adverse effects, and it is easy to leave sequelae or affect driving safety.

Seven, the cooling water temperature is too low

Wear and tear of the engine In the hot summer weather, some drivers blindly require the cooling water temperature to be as low as possible in order to prevent the engine temperature from being too high; some drivers simply remove the thermostat to achieve the purpose of cooling down. These practices are wrong.

Automobile engines are both afraid of heat and cold. If the cooling water temperature is too low, it will worsen fuel combustion, increase fuel consumption, aggravate wear, increase oil viscosity, and reduce engine power. Tests have shown that when the cooling water temperature of the car is 40-50 degrees Celsius, engine wear will increase by 60%-80%, power will be reduced by 25%, and fuel consumption will increase by 8%-10%. Therefore, the temperature of engine cooling water is not as low as possible. , Generally should be controlled between 80~90 degrees Celsius.

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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