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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

Elimination of Gear Backlash in CNC Machining Feed System

Elimination of Gear Backlash in CNC Machining Feed System   The transmission gear in the feed system of the CNC machining machine tool must eliminate the transmission gap between the meshing gears as much as possible, otherwise the motion will lag behind the command signal after each reversal of the feed system, which will affect the machining accuracy (accuracy) ). There are the following two common methods for CNC machining machine tools to eliminate the transmission gear gap.   1. Rigidity adjustment method   The rigid adjustment method is an adjustment method that cannot be automatically compensated for the tooth side clearance after adjustment. Therefore, the pitch tolerance and tooth thickness of the gear must be strictly controlled, otherwise the flexibility of the transmission will be affected. This adjustment method has a relatively simple structure and a better transmission rigidity.   (1) Eccentric shaft adjustment method   As shown in Figure 610, the gear 1 is mounted on th

Analysis of electric car maintenance in summer

In summer, you must give your car “an extra layer of protection”. We all know that summer not only rains a lot, but also the temperature is high. Electric cars are basically similar to traditional cars except that the power system is powered by batteries. If you want to maintain the beauty of electric cars, have good performance, and the safety of driving and riding, they cannot do without regular maintenance. .
Professional nursing in time
Car interior care is indispensable, and it can clean the usual sanitary corners such as the air outlet of the car interior and the corner of the seat. You can also go to an auto beauty shop to clean up the interior of the car. Use steam, ultraviolet, photocatalyst and other high-temperature disinfection methods to keep the interior of the car dry and clean.
Desiccant, bamboo charcoal, essential
In order to prevent the car from suffering from “rheumatism”, the owner can prepare a few more dehumidifiers or dehumidifier boxes in the compartment or the back luggage compartment where moisture is easy to accumulate, and pay attention to regular inspection and replacement, and dehumidify the car. Moisture-proof. When not in the car, use desiccant to replace the air conditioner to dehumidify. It is better to buy a simple dehumidification box and place it in the corners, so that the parts in the car will not be easily damp after overnight. Lime and bamboo charcoal also have the function of dehumidification. In addition, rolling old newspapers into a bundle and placing them on the front and rear foot pads or in the trunk also has the same dehumidification effect.
can’t forget to wash the car and clean the chassis
Electric vehicles should be cleaned in accordance with normal car washing methods. During the cleaning process, care should be taken to prevent water from flowing into the charging socket of the vehicle body and avoid short circuit of the body line. In a cool place, wait until the body temperature drops below 40 degrees Celsius before cleaning. Use a water pipe to wash away loose dirt; use a neutral car wash to clean the vehicle. The mixing of the cleaning agent should be carried out according to the manufacturer’s instructions. Use a soft cloth soaked in the cleaning solution, and do not wipe it hard to avoid damage to the paint. Experts recommend washing cars as often as possible during the rainy season, because the acidic substances in the rain water have a strong corrosive effect on the paint surface of the car. If it is not handled in time, the paint surface of the car will lose its luster over time. The most effective way to protect the paint surface of the car body is to wax and seal the glaze to prevent the paint surface from fading and aging.
After heavy rain, the bottom of the car should be cleaned in time. Otherwise, sludge may accumulate on the side of the wheel cavity and the chassis of the vehicle. This will easily make moisture trapped in it and cause rust, and the wheel cavity may even be loose and perforated. Therefore, we must pay attention to the cleaning and anti-rust treatment of the car chassis. In addition, be careful not to wash the body and chassis with alkaline cleaning fluid.
“Sunbathe” for the car
Sunlight contains ultraviolet, infrared and visible light. Like people, cars also like to sunbathe, especially in the rainy and humid seasons. The sun-heated car body will quickly remove the accumulated water vapor inside. The weather turns fine, so take time to sunbathe your car. In addition, car carpets, cushions and other cotton and linen products are more susceptible to damp and mildew, and breed bacteria. Therefore, it is best for car owners to dry these items or replace them regularly. You can also choose a sunny day, try to clean the interior of the car with a neutral detergent, open all doors and windows, and use sunlight and ventilation to achieve the disinfection effect.
But to prevent exposure to the sun, it is strictly forbidden for electric vehicles to be exposed to the sun. An excessively high temperature environment will increase the internal pressure of the battery, causing the battery to lose water, causing the battery to decrease in activity and accelerating the aging of the electrode plate.
Pay attention to the deviation of the car
In rainy days, the brake system is also prone to water, which makes the brakes lag, causing accidents when the car runs off during braking. If water enters the brake system, after the rain stops, you can lightly brake with your left foot and step on the accelerator with your right foot. The friction between the brake pad and the brake disc will evaporate the water to ensure driving safety. At the same time, we must remove the stones and gravel on the tires in time after the rain. Everyone knows that the tread pattern of the tires also has the function of draining water. These things attach to the tires and make the tires insufficient displacement.
Check the air pressure often
Keep the tire pressure at the correct tire pressure; check the tire pressure every two weeks or at least every month; incorrect tire pressure will cause power consumption, short driving distance, reduce driving comfort, reduce tire life and reduce driving safety sex.
Periodic inspection
In the course of use, if the continuation of the electric vehicle suddenly drops more than ten kilometers in a short period of time, it is very likely that there is a problem with only one battery in the battery pack. At this time, you should go to the sales center or agent maintenance department for inspection, repair or assembly in time. This can relatively extend the life of the battery pack and save your expenses to the greatest extent.
Avoid high current discharge
When the electric vehicle starts, carries people, or goes uphill, try to avoid slamming and accelerating, which will form an instantaneous large current discharge. High current discharge will easily lead to lead sulfate crystals, which will damage the physical properties of the battery plates.
Avoid plug heating during charging
220 volt power plug or charger output plug loose, contact surface oxidation, etc. will cause the plug to heat up. Excessive heating time will cause the plug to short circuit or poor contact, damage the charger and battery, and bring you unnecessary losses. Therefore, in the above situation, the oxide should be removed or the connector should be replaced in time.

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