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As far as the world's top machine tool technology is concerned, the use of linear motors and non-contact hydraulic bearings has gradually become the mainstream of the top CNC machine tools.^/Very Literature/^

What is particularly critical here is the use of linear motors. You must know that the most mainstream machine tools in our country currently only use ball screw bearings and AC servo motors.

And in terms of ball screw bearings and AC servo motors, we also have to import them from abroad to meet our own needs. Just like the automobile industry, the large domestic machine tool manufacturing companies are just completing the final work.

This is just the assembly step.

However, even if we use AC servo motors and ball screw bearings produced in Japan, our machine tools are still much worse than similar foreign products in terms of durability, high-speed acceleration, etc.

Even a few years later, China has developed into a major country in the world's machine tool industry, but when it comes to high-precision technology, it still has the same problem as before, with the problem of being large but not refined, and the real core technology has not been mastered in place.

Take the ball screw bearing, for example. This thing is a device that controls the workpiece clamped on the machine tool fixture, moving up, down, left, right, forward, and backward, to cooperate with the processing tool to process the workpiece.

Or it is a device that controls the tool and performs processing on the workpiece.

But because the balls we produce are not up to standard, our products have always been inferior to foreign products in terms of ball screws. Don’t underestimate these small balls. It is these balls that move inside the ball screw.

, can control the robot arm to operate freely.

Once these balls are not up to standard, a slight deviation in the direction of the ball screw will cause the entire workpiece to be completely substandard or even completely turned into a scrap.

The AC servo motor controls the operation of the entire machine tool, especially the speed, angle and strength of the cutting tools used for processing, which are all controlled by the AC servo motor.

If you don't control this motor well, it will also cause the workpieces to be processed not to meet the standards, and even have certain differences and gaps from the workpieces processed abroad.

But while our country's machine tool processing industry is still having headaches over ball screw bearings and AC servo motors, foreigners have already used non-contact hydraulic bearings and current electric motors on machine tools, and

In this field, we are more than a generation ahead of us. *Very literary*

What is particularly important here is the application of this current electric motor. If the non-contact hydraulic bearing is compared with the function of the ball screw bearing, it is only more flexible in the control method and is not irreplaceable.

, then the processing efficiency of linear motors and AC servo motors are completely different.

As early as the 1996 Chicago Machine Tool Expo in the last century, large companies in the United States, Germany and Japan have begun to show machine tools equipped with current electric motors to the world. Once this kind of machine tool was born, it also

Immediately, they showed their powerful charm in front of the world.

Anyone who is engaged in processing and has dealt with machine tools knows that if you want to machine a straight and long groove on a hard workpiece, then traditional machine tools that use AC servo motors generally use

The tool spirals forward on the surface of the workpiece, and then carves a straight groove on the workpiece.

This will cause great impact and wear on the machine tool itself and the cutting tools. In addition, it is necessary to ensure that the motor of the machine tool works under high intensity. In order to ensure the forward speed of the cutting tools, it is also necessary to ensure that the rotating speed of the cutting tools can reach

To a considerable extent, only in this way can the precise processing of the groove be completed.

However, despite many adjustments to the AC servo motor, when encountering such processing problems, it will still give the machine operator a headache, because this kind of work is the most difficult to do, and it is not a good choice.

Because the end is worn or the rotation speed is not enough, the entire workpiece machining effort will be wasted.

But if you use a linear motor, there will be no such problem, because it can convert electrical energy into very powerful linear acceleration mechanical energy. In other words, when a machine tool using this kind of motor processes the workpiece above, it will

The tool does not need to spiral forward at all. It only needs to move straight forward driven by the powerful mechanical kinetic energy of linear acceleration to complete the processing of a very straight groove on the hard workpiece surface.

And if the acceleration is sufficient, the accuracy deviation of the entire workpiece can even reach oc%, which is completely different from the processing accuracy of ordinary servo AC motors.

And the most important thing is that with such a machine tool, the stroke will be completely unrestricted. For example, if a traditional AC servo motor machining center is used, the stroke will be limited due to the manufacturing process of the ball screw bearing.

Generally speaking, such a machining center can only process large workpieces up to 46 meters long.

But if you use a linear motor machine tool, you don't need to worry about this at all. Because it uses a linear motor drive, the stator can be extended infinitely, which means that its x-axis is not limited, so like this

The machining center can process a workpiece with a length of more than 40 meters easily and without any difficulty.

Moreover, the positioning accuracy of this kind of machine tool is very high. Because it adopts grating closed-loop positioning method, the accuracy of this kind of machining center can generally be controlled between 010oq millimeters, reducing tracking errors by more than 200 times, and fully achieving nanometer-level control.

.

All in all, this kind of airport is definitely the latest generation of extremely high-precision products, which is very suitable for processing parts of cars, trucks, airplanes, ships and other large machinery.

If it is used for military purposes, this kind of machine tool will be even more powerful for improving the level of military industry. It will be a piece of cake to process workpieces for military aircraft or warships and submarines. Even processing missile parts is absolutely impossible.

It's a no brainer.

But it is precisely because this kind of machine tool has such advantages that countries in the Western world, led by the United States, have very strict controls on the export of such machine tools to China.

Some castrated versions have been produced, or simplified versions that will not greatly improve our country's production technology. They allow exports like China's. As long as they can improve China's machining technology, they will change it.

Export to China is not allowed.

Among these countries, Germany has exported several extremely severe versions of castrated machines to other countries, such as the United States and Japan, which are not allowed to be exported to China at all.

As for the machine tools imported from Germany to China, they are very severely emasculated, so they do not have much outstanding performance. In addition, the Germans are used to the lion's mouth, so the asking prices of these machine tools are quite high.

, which also caused some domestic departments to give up the idea of ​​introducing such machine tools from abroad.

Later, some universities or scientific research institutions were organized in China to conduct research and development on this kind of machine tools. However, a lot of money was spent every year, but the result was that the national liquor Moutai and luxury hotels in various places were cheaper. As for the scientific research results, they were not

We can only produce products that are more than one or two generations behind others.

Jin Xiaoqiang had previously entrusted Shinyuki Naruto to smuggle some large machining centers and smelting equipment from Japan, but he never obtained such machine tools.

Because he knew that in a country like Japan that was very cautious towards China, it would be extremely difficult to obtain such equipment.

Although Shinyuki Naruto also acquired some machine tools that are currently the world's mainstream technology, they were only developed when the security agency turned a blind eye.

If you really want to get such sensitive equipment, I'm afraid Naruto Shinkyo won't be able to sit in the current position of the president of Ono Import and Export Trading Co., Ltd. Guantanamo is the most suitable one.

's destination.

The reason why Japan's Security Agency turns a blind eye to Naruto Shinxing's behavior of concealing and concealing personal information is also related to the domestic economic downturn that has been going on for years.

They are the largest machinery exporter in the world, and according to their estimates, China's machining capabilities lag behind theirs by at least thirty years.

Moreover, China's domestic demand for advanced CNC machine tools is also very large, but because the Americans strictly adhere to the Batumi Agreement, they can only watch this cake but cannot eat it, which also gives them a huge headache.

Therefore, Naruto was allowed to carry out the act of entraining and hiding privately. As long as China could slowly improve the level of their machine tools, the Americans would eventually have to relax their supervision of the Batumi Agreement.

When the time comes, as soon as the Americans open their mouths, they will use their best products to swarm into the Chinese market and defeat all the Chinese machine tool companies, so that the market will still be theirs...

It's a pity that the Japanese don't know that Jin Xiaoqiang has secretly started independent research and development of mobile beds, and has made such great progress. Otherwise, I'm afraid they won't be able to kill them, and let these technologies flow into China like this.

And this time, I don’t know whether I should say that it’s Fan Xike’s good luck, or that it’s Jin Xiaoqiang’s good luck. The two people, each with their own needs, actually bumped into each other at once.

"Mr. Axel, how much are your machine tools worth? And how much do you owe the bank and Derek in total?"

Jin Xiaoqiang smiled and asked Fan. Axel if he was attracted by this guy's machine tools.

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