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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

Eight issues that need to be paid attention to in summer car maintenance

Car owners become car owners and enjoy the various pleasures brought by cars. Don't forget to do some necessary work and treat your car well, so as not to make your car lose its temper in the "three volts". At the same time, to avoid traffic accidents caused by the failure of the car itself, the following suggestions are put forward:
One, prevent the mixed gas from being too thick
The summer temperature is high, gasoline is easy to flow, and at the same time, the heat hole expands, which increases the flow of gasoline, and the gasoline is easy to evaporate, causing the mixture to be too rich. Therefore, the heat hole should be adjusted, the position of the accelerator and the throttle rocker arm should be adjusted, and the oil level should be appropriately lowered to reduce the fuel supply.
Two, anti-gas resistance
The fuel system of gasoline engines in summer is prone to vapor lock due to temperature rise, resulting in insufficient fuel supply or even interruption of fuel supply in the oil circuit. To prevent air resistance, use asbestos pads to separate the gasoline pump from the exhaust pipe, or wrap the gasoline pump with a damp cloth to cool down.
Three, anti-evaporation
Under high temperature, the evaporation of oil and water will increase. The fuel tank cover should be tightly closed and the fuel pipe should be prevented from oil leakage; the water level of the water tank, the oil level and height of the crankcase, and the brake fluid in the brake master cylinder should be checked frequently. The height of the liquid level and the height of the electrolyte level in the battery, etc. In case of non-compliance, add and adjust in time.
Four, prevent overheating
In order to prevent the engine from overheating, the fan belt should not be stained with oil during maintenance to prevent slipping, and the belt should be kept tight. During long-distance driving, pay attention to rest in good time. When resting, try to choose a cool place and open the engine hood to ventilate and dissipate heat. When the tire pressure increases due to heat, you should stop and cool down immediately, otherwise there is a risk of a tire blowout. Pay special attention not to use deflation or pour cold water to lower the tire pressure and temperature.
5. Prevent spontaneous combustion and explosion
When the temperature is high, the heat dissipation is slow. The temperature of the car water tank often affects the normal power output of the engine because of the high temperature, and may even cause the engine to fail to work normally.
High temperature also causes some parts to expand and deform. The lighter ones will accelerate the wear of the parts, and the heavy ones will burn the parts. At the same time, long-term use of on-board electrical appliances and air-conditioning systems will also cause the car’s circuit system to overheat. If various wires or resistance boxes are not maintained at ordinary times, severe overheating may even cause the car to spontaneously ignite.
Six, prevent poor lubrication
The lubricating oil is easy to be thinned by heat, has poor oxidation resistance, is easy to deteriorate, and even causes failures such as bush burning. Therefore, the crankcase and gearbox should be replaced with summer lubricating oil, and the quantity and quality of the lubricating oil should be checked frequently and replaced in time.
Seven, regularly clean the car air conditioner
The car air conditioner will have an unpleasant sour smell after being used for a long time. The water vapor adheres to the air conditioner evaporator and produces a variety of molds harmful to human health. Therefore, it is very important to clean the car air conditioner regularly to eliminate mold and to create a fresh interior space.
8. Pay attention to sun protection and UV protection
When parking, you should park your car in a cool place as much as possible, cover it with a silver car jacket, or wax and coat the car body, stick an explosion-proof film on the car windows, and place a sun block and light-proof pad in the car to block the sun.

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