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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

Introduction to the maintenance of automobile air-conditioning system

  Automobile air conditioners are composed of compressors, condensers, air-conditioning pipelines, evaporators and electrical circuits.It uses the constant frequency conversion cycle of the refrigerant to achieve the cooling effect.The characteristic of liquid refrigerant is that it can be vaporized at normal temperature. When it is heated, it becomes a vapor to absorb the surrounding heat, and when it is cold, it becomes a liquid and releases its own heat.The air-conditioning system uses the characteristics of refrigerant to take away the heat in the compartment and transfer it to a place outside the compartment.

Car air-conditioning system inspection and maintenance

Compressor: The mounting bracket of the compressor must not be loosened.The drive V-belt is tightly tight. Too loose will cause slipping, resulting in a decrease in compressor speed and insufficient cooling capacity; too tight will aggravate belt wear and cause premature damage to the crankshaft bearing.The oil level of the compressor refrigerating machine oil should be within the specified range. Under normal circumstances, the refrigerating machine oil consumption is very small. If the refrigerating machine oil cannot be seen from the oil sight lens of the compressor, it indicates that the air-conditioning system is leaking and should be repaired in time.

Condenser: In order to ensure that the entire air-conditioning system can work normally and the cooling effect is good, it is very important to keep the surface of the condenser clean.For this reason, the condenser should be cleaned frequently to prevent oil, dirt and other debris from attaching to the condenser.When cleaning, be careful not to knock down the condenser fins, let alone damage the tubes.

Evaporator: An air filter is generally installed at the air inlet of the evaporator. The air filter should be cleaned once a week to prevent dust and debris in the car from adsorbing on the air filter and obstructing air circulation, resulting in insufficient cooling capacity .

Air-conditioning pipelines: always check whether the hoses of the air-conditioning system are worn or aging.A large number of rubber hoses are used in the air-conditioning system. If these hoses are worn out, they will burst when the ambient temperature rises and the refrigeration system is working, causing the refrigerant and refrigerating machine oil to leak out and the air-conditioning system will completely fail.If the hose is broken and the air conditioner continues to run, it will cause a large amount of soil and moisture to enter the compressor and other components, making the entire air-conditioning system scrapped.Therefore, you must check the rubber hose frequently, and deal with it in time if there is wear and tear, wrap the broken parts with cloth, stop using the air conditioner, and send it for repair as soon as possible.

Electrical wiring: often check the circuit condition of the air conditioner to prevent the insulation layer of the wire from fraying.When the insurance of the air-conditioning system is burned out, check the fault first, and then replace the fuse to power on after the treatment is completed. The insurance must not be short-circuited, otherwise the entire circuit may be burned out, and other circuits on the car may be damaged. Adverse effects.

空调系统清洗主要是清洗空调通风管路、进行压力检测和蒸发箱的清洗。首先是空调通风管路的清洗除菌,它是空调出风的必经之路,在通风管路壁上的积尘和大量细菌会随着空调通风而吹进车里,所以清洗和除菌是很重要的。其次,压力系统的检测,主要是检查冷媒是否足够,或者是否有泄露。*后是清洗蒸发箱的灰尘。

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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