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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 Misunderstandings in the Use of Automobile Lubricants

  Automobile supplies network: Car lubricants can be said to be a frequently used oil in maintenance. It can not only protect the function of the engine, but also save the cost of gasoline. It can be said to serve multiple purposes; but if it is used improperly , Lubricating oil will not only fail to maintain, but will damage our car. Today, I will introduce to you the four misunderstandings in the use of lubricating oil, and I hope it will be helpful to the majority of car owners.

Misunderstanding XNUMX: Add more lubricating oil

The amount of lubricating oil should be controlled between the upper and lower marks of the oil dipstick.Because too much lubricating oil will escape from the gap between the cylinder and the piston into the combustion chamber and burn to form carbon deposits.These coke deposits increase the compression ratio of the engine and increase the tendency to knock; the coke deposits in the cylinder are red hot and easily cause pre-ignition. If they fall into the cylinder, they will aggravate the wear of the cylinder and piston, and will also accelerate the pollution of the lubricating oil.Secondly, too much lubricating oil increases the stirring resistance of the crankshaft connecting rod and increases fuel consumption.

Misunderstanding XNUMX: When the lubricating oil turns black, it is time to change the oil

This understanding is not comprehensive.For lubricating oils that have not been added with a quiet dispersant, the darkening of the color is indeed a sign that the oil has been seriously deteriorated, but the lubricating oil used in modern cars is generally added with a quiet dispersant.This cleanser will wash off the rubber film and black carbon deposits adhering to the piston and disperse it in the oil to reduce the generation of high-temperature deposits in the engine. Therefore, the color of the lubricating oil is likely to turn black after using for a period of time, but at this time The oil has not completely deteriorated.

Misunderstanding XNUMX: Lubricating oil is often added and not changed

It is correct to check the lubricating oil frequently, but only supplementing without replacing it can only make up for the lack of oil quantity, but cannot fully compensate for the loss of lubricating oil performance.During the use of lubricating oil, the quality will gradually decline due to pollution, oxidation and other reasons, and at the same time there will be some consumption, which reduces the quantity.

Misunderstanding XNUMX: Additives are useful

Really high-quality lubricants are finished products with a variety of engine protection functions. The formula already contains a variety of additives, including anti-wear agents, and the lubricant* pays attention to the balance of the formula to ensure the full play of various performances.Adding other additives on your own will not only not bring extra protection to the vehicle, but will easily react with the chemicals in the engine oil, resulting in a decline in the overall performance of the engine oil.

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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