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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

Inventory of the four major misunderstandings of lubricating oil change

 

Car lubricants are used very frequently during maintenance. In addition to protecting the engine and reducing the number of oil changes, high-quality lubricating oil can also save gasoline costs. In this season, we must also be careful not to cause car breakdowns due to improper use of lubricants. The “improper” use method generally stems from the four “misunderstandings” of car friends about lubricants.

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 carbon deposits will increase the compression ratio of the engine and increase the tendency of knocking; the carbon 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 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 detergency dispersant, the darkening of the color is indeed a sign that the oil has been severely deteriorated, but the lubricating oil used in modern cars generally has a detergency decomposer added. This detergent will wash off the glue film and black carbon deposits adhering to the piston and disperse them in the oil to reduce the generation of high-temperature deposits in the engine. Therefore, the color of the lubricating oil will easily turn black after a period of use, but at this time The oil has not completely deteriorated.

Misunderstanding XNUMX: Lubricating oil is often added and not changed

Always check that the lubricant is correct, but only supplementation without replacement can only make up for the lack of oil quantity, but cannot fully compensate for the loss of lubricant performance. The quality of lubricating oil will gradually decline due to pollution, oxidation and other reasons during use. At the same time, there will be some consumption, which reduces the number.

Misunderstanding XNUMX: Additives are useful

The real high-quality lubricant is a finished product with a variety of engine protection functions. A variety of additives have been included in the formula. Including anti-wear agents, and lubricants* pay attention to the balance of the formula to ensure the full play of various properties. Adding other additives by oneself will not only not bring additional protection to the vehicle. On the contrary, it is easy to react with the chemicals in the 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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