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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

A comprehensive strategy for car maintenance after long-distance driving

What items need to be maintained after long-distance driving? After long-distance trekking, especially after driving through bad road conditions, for those cars that are only suitable for urban roads, the loss of the car condition will be great. It is recommended that the owner send the car to the repair station for a comprehensive maintenance. After understanding the importance of maintenance, what maintenance items should be done?
Add oil and water
Check whether the oil and water of the whole vehicle are sufficient and whether the oil quality is good. The content includes engine oil, coolant, glass water, etc. If the liquid level is insufficient, add it, and replace the oil if it is of poor quality.
Prevent oil leakage
Check the powertrain and transmission system for oil leakage. The content mainly includes whether there is oil leakage in several major components (such as engine, gearbox, rear axle, etc.).
Reinforced chassis
Although the chassis of each car is anti-rust treatment before leaving the factory, and some even go through double-sided galvanizing or double-sided anti-rust treatment, from the perspective of professional and technical personnel, those domestic cars whose prices are less than 200,000 yuan If the chassis is only limited to driving on smooth urban roads, it will not be a big problem to check the chassis once 10,000 kilometers, but if you walk some mountain roads or rotten roads, then mud and other dirt can easily adhere to the chassis, even Some gravel that keeps hitting the chassis will also peel off the protective layer of the chassis, which increases the possibility of the chassis being rusted. Therefore, even if the vehicle only travels a few thousand kilometers, the chassis inspection is still necessary.
The inspection content includes whether each transmission component, suspension component is loose or damaged (such as transmission shaft, half shaft, half shaft dust cover, suspension, shock absorber, ball joint) and chassis corrosion inspection.
Tyre check hidden danger
The tire is the main part of the car in contact with the ground, so the risk of injury is also higher. The owner can check the tires for obvious injuries and scratches. If there are obvious scars on the sidewall, it is best to replace the tire, because the sidewall is thin and the pressure is limited, and the chance of a puncture will be greatly increased.
During maintenance, first check the tire pressure and wear condition, whether the nut is loose or fall off, and remove the embedded objects and iron nails between the twin tires or on the tread. If there is deviation or swing when driving, you need to perform four-wheel alignment or dynamic balance again.
Brake system
Including brake pads, brake tubing, brake master cylinder, sub-cylinder, hand brake, etc.
circuit inspection
Including whether the lights and instrument instructions are normal.
Clean the engine oil circuit
Some scenic spots are underdeveloped, and there may not necessarily be a high-grade gasoline supply. If you use low-grade gasoline or inferior gasoline, on the one hand, the engine will produce knocking and noise; on the other hand, it will easily cause the exhaust pipe catalyst, namely the three-way catalytic converter, to fail, resulting in unqualified exhaust emissions and sometimes blocking the exhaust pipe. , Due to poor exhaust, the engine will be weak and increase fuel consumption. Seriously, it will damage the internal parts of the engine, such as the top of the piston.

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