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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

How to maintain the car

There are two main aspects to vehicle maintenance. One is the mandatory maintenance provided by the repair station. On the other hand, some daily maintenance is done by the owner. The normal maintenance of the vehicle is related to the service life of the vehicle and the safety of the driver and passengers. Improper maintenance or use will cause vehicle failures and bring safety hazards. So what are the maintenance items for the car as a family sedan? Today we will talk about car maintenance items and daily car maintenance knowledge.

★Check engine oil

Park the vehicle on a level road. Pull out the vernier to check the oil level. If the oil is within the two marking lines (F) and (L), it belongs to the normal range, and if it is lower than the (L) position. The specified type of engine oil should be added, and the liquid level after refueling cannot be higher than (F) level.

★Engine coolant level inspection

Never open the radiator cover when the engine is in a warm state, otherwise you may be scalded by the spilled coolant or high-temperature steam.After the engine is cooled, check that the liquid level of the coolant should be between the full level and the low level. Otherwise, distilled water or purified water (mineral water can not be added) or refrigerant should be added. The height of the liquid level after adding water should not exceed the full level. If it is found that the cooling fluid decreases rapidly in a short period of time, check the cooling system for leaks or go to the maintenance station for inspection.

★Check the brake fluid level

If the brake is also between the high and low positions, it means normal. If the brake fluid is close to the lower limit or lower than the lower limit, it means that there may be a leak in the system or the brake shoes are worn too much, and you should go to the repair station for inspection and repair in time.

When refilling brake fluid, pay attention to adding the same type of brake fluid to prevent damage to the cup, and pay attention to protect the paint to prevent corrosion of the paint surface.

★Check the liquid level of the clutch master cylinder

If the fluid level of the clutch is between the high and low fluid levels, it means it is normal. If it is lower than the standard line, the master cylinder or the sub-cylinder cup may be damaged. When the engine is running, it will be difficult or impossible to shift gears. Please go to the nearest maintenance station for inspection and repair immediately.

★Maintenance and inspection of battery

Check whether the battery is firmly fixed, the electrolyte should be between the upper limit and the lower limit, and the electrolyte or distilled water should be added to the upper line in time when it is close to the offline.Keep the positive and negative cables of the battery in good contact, and keep the battery clean and dry. For vehicles that have been stored for a long time, remove the positive and negative cables of the battery, and re-wire the battery after about half a month. After starting the engine for about 20 minutes, charge it in time if the battery is obviously insufficient.

★Inspection of tires

The tire pressure should be checked at room temperature every month. If it is lower than the normal standard, the tire pressure should be refilled in time.The air pressure cannot be too high or too low, otherwise it will affect the safety of driving.

Check the tires for cracks, and replace the tires in time when there are potential safety hazards.

When choosing tires, make them the same model.

★Inspection of belt

When starting the engine or driving the vehicle in normal times, the belt hums. One situation is that the belt has not been checked and adjusted for a long time, and it can be adjusted according to normal standards. Another situation is that the belt is aging and needs to be replaced.

★Inspection of air filter

If the air filter is too dirty, it will cause poor engine operation, excessive fuel consumption, and damage to the engine. When checking the air filter, if there is less dust and lighter blockage, you can use high-pressure air to blow it from the inside out and continue using it.The dirty air filter should be replaced in time.

★Spark plug inspection

Normal spark plug insulation ceramics are intact.There is no rupture and leakage phenomenon. When the spark plug gap is 0.8+-0.0mm, the spark is blue and strong.If an abnormality is found, the gap should be adjusted or the spark plug should be replaced.

★Check the gasoline filter

If you find that the fuel supply is not smooth, check whether the gasoline filter is clogged, and replace it in time if the foreign matter is clogged.

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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