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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 choose the right lubricant product

Automobile lubricating oil is an indispensable item for automobiles. Without lubricating oil, automobile cylinders will wear out seriously and affect the performance of the engine. Therefore, for the healthy driving of the car, it is necessary to use lubricating oil reasonably. Of course, the choice of lubricating oil is different in different seasons. Let’s learn about the selection of lubricants in winter car maintenance.

How can I choose the right lubricant products for my car?

The temperature drops significantly in winter. Ordinary lubricating oil products become thicker when the temperature is low, and their fluidity is weakened. It takes longer to reach the parts that need lubrication, which makes the vehicle difficult to start and wears more. Therefore, in winter, it is best to choose lubricating oil products with low base oil viscosity and low pour point, so that it can continue to bring good lubrication to the car engine.

So, what kind of lubricant should I choose? Generally, it is more appropriate to choose general-purpose engine oil for winter and summer, and then brush it according to your own situation.

First of all, the choice of lubricating oil should be selected according to the requirements of the engine. You can neither use too high-grade oil on engines with lower requirements, nor use lower-grade oil on engines with higher requirements. The choice of lubricating oil can be increased by one level on the basis of the manufacturer’s recommendation, or the performance of synthetic engine oil is better.

Secondly, try to choose general-purpose oil for winter and summer. The general-purpose engine oil can maintain stable lubrication performance no matter how the temperature changes, and has a better protective effect on the engine.

Again, it depends on the condition of the engine. If the engine is new or in good condition, use low-viscosity oil as much as possible, such as 0W-40, 5W-40, and 10W-40, so as to make the lubricating oil flow faster and reduce the wear when starting.

After   *, if it is in the high temperature season or the engine has worn to a certain extent, it is necessary to choose high-viscosity oil, such as 15W-50, etc., which will help to form a thicker oil film, maintain oil pressure, and reduce oil consumption.

After selecting the lubricant, how to add it is another knowledge. The following will teach you some precautions for adding lubricant.

The amount of oil added is not as much as possible. If there is too much lubricating oil, it will increase the rotational resistance of the crankshaft and reduce the output power of the engine, and the excessive oil will burst into the combustion chamber and burn, causing the vehicle to burn engine oil, emit blue smoke, and increase fuel consumption. The residue after the oil combustion will accumulate on the combustion chamber wall, reducing the space of the combustion chamber, thereby reducing the compression ratio of the engine; at the same time, it will also accelerate the wear of the cylinder and piston, thereby reducing the service life of the vehicle. Therefore, when adding lubricating oil, it is advisable to keep it slightly lower than the *high mark of the oil dipstick; in addition, it is necessary to grasp many factors such as the type of oil, the season of oil change, and the performance of the engine.

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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