reborn industrial empire

Chapter 571 Breakthrough in the field of machine tools

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Ball screw bearings can be said to be one of the two most critical and core parts of modern high-precision machine tools.[氵kun][氵kun][小][说][网]

Its main function is that it can convert the work done by the AC servo motor from rotary motion into linear motion, or convert linear motion into rotary motion.

Some of its functions are similar to the transmission used in a car's powertrain, which converts the function into torque, and then converts the torque into axial repetitive force.

This component is currently the most commonly used transmission component in machine tools or precision machinery in the world.

In the world's mainstream high-precision CNC machine tools, the advancement, rotation and other processing actions of the machining arms are almost all controlled by this kind of ball screw bearing.

This kind of machine does not seem to be difficult to manufacture, but it is not that simple. The key to this kind of ball screw bearing is the ball inside.

You must know that the key to the ability of ball screw bearings to convert rotary motion into linear motion, or reverse linear motion into rotary motion, is the balls inside.

It is the back-and-forth friction of the balls in the groove on the screw that can provide corresponding power to the screw and perform corresponding work.

Therefore, ball screw bearings have very high requirements for the balls, and the balls are required to be able to work in high temperature environments, and they are also required to be corrosion-resistant, have sufficient hardness, etc.

This requires excellent skills in the production of ball screws. Therefore, since the birth of ball screw bearings, the world's major machinery manufacturing powers have been studying how to produce ball screw bearings that have high hardness and are resistant to high temperatures.

Long life ball.

Industrial powers such as Germany, Japan, and the United States are all using their own unique methods to produce more qualified and suitable balls. With the continuous development of science and technology, as well as the continuous advancement of chemistry and other sciences, the balls produced by humans are becoming more and more sophisticated.

In the coming months, it can meet the working condition requirements originally set by people.

However, these technologies are generally in the hands of a few industrial powers in the world.

And although our country is known as the world's factory and the world's number one industrial power, in fact, in this most core part, our skills are far from others./ 网/全文 txt下载

Even five years later, when our country is already known as the world's largest machine tool manufacturing country, our country still doesn't know much about the real core components of machine tools.

Many core components of high-end machine tools produced in my country, such as ball screw bearings and AC servo motors, are imported from foreign countries.

This is just like many cars in our country that were claimed to be domestically produced at that time. In fact, their engines and transmissions were imported from foreign companies.

And even if we can introduce such ball screw bearings or AC servo motors from abroad, the Germans and Japanese have very strict controls on these components exported to our country.

They will only sell us some high-priced second-rate products that they have eliminated. As for first-rate products, they will never sell them to us.

I believe anyone who has really come into contact with our country's machine tool products will know this. For CNC machine tools with the same specifications, the cutting speed of German or Japanese machine tools can reach a maximum of 4,000 to 5,000 rpm, and ours

The highest speed of the carving knife is only 1,000 to 1,500 rpm, which is not even the slightest difference from others.

Among them, the worst thing about ball screw bearings is the balls used in them.

Any engineering person who has engaged in industrial processing may know how bad our country's heat treatment is. When foreign countries want to produce a very strong and durable steel workpiece, foreign industrial enterprises control the heat treatment before and after the final workpiece is formed.

It's very strict.

Sometimes, when a furnace of molten steel is smelted to the end and then poured into the casting billet for molding, the final heat treatment alone may take more than thirty or even forty hours.

Moreover, during the final heat treatment, various means are used, such as using shock waves to carry out spectrum vibration, adjusting the arrangement of iron molecules inside the casting, removing internal stress, etc.

Then after the casting is formed and polished, a coating step will be performed to enhance the wear resistance, corrosion resistance, hardness and high temperature resistance of the workpiece, etc.

It is precisely this kind of meticulous and orderly work that ultimately leads to the castings made by others being much more durable than ours.

But looking back at our industrial castings, for example, the balls we produce are used in the same ball screws as others. Other people's balls can be replaced after one year, but ours may only last three months, or even only one month.

, serious surface wear, cracks, or even breakage and crushing will occur.

The reason is that we do not pass the final heat treatment step of processing castings. Some factories are even more terrible. In order to save costs, they will not heat treat the workpiece at all.

Because the process required for heat treatment is time-consuming and complicated, the cost will increase. In order to save such costs, some unscrupulous factories will not perform any heat treatment on the processed balls at all.

Such balls can also be used on some mechanical tools that do not have high quality requirements. Once they are used on machine tools, they will immediately cause trouble.

Of course, there are some serious and responsible companies in our country who want to overcome these problems. However, after many years of research on the final heat treatment method, they have not been able to figure out how the final processing process should be carried out.

You need to know the final heat treatment of this steel casting. Foreigners have been exploring the technology for hundreds of years. Of course, they must keep it to themselves and will never make it public.

As for the state of scientific research in our country, it takes three days to fish and two days to dry the net. It is full of laymen leading experts and politics prevailing.

In national scientific research institutes, it often happens that leaders change cars frequently and have money to drink Moutai, but have no money to conduct experiments for scientists.

Just like this so-called essence of scientific research, if you can understand hundreds of years of scientific research accumulation, then there is something wrong!

But Jin Xiaoqiang is different here. He directly obtained a large amount of smelting technology from Naruto Shinyuki. After so many years, he specially organized manpower to study and absorb it. It can be said that he has brought Naruto Shinyuki to

The special smelting that came was just absorbed completely.

Moreover, he also told Naruto to be careful and use his network to keep a close eye on their latest special steel smelting technology from Japan. If there is any trouble, if he can take action, he must definitely take action on their latest smelting technology.

Come here and don't care how much you spend.

Moreover, within his own special steel smelting center, Jin Xiaoqiang has also invested a large amount of funds for his own scientific researchers. You don’t have to worry about insufficient funds. As long as you have good ideas and good ideas, go boldly.

Do it, go experiment.

We at Huayang Dynamics don’t know anything else, but money is definitely not a problem, and if you can successfully experiment and come up with a new type of alloy, then the head office will definitely not hesitate to reward you.

It was with such a large capital investment and bonuses that Jin Xiaoqiang was able to come up with the smelting technology of ball-bearing special alloy steel that had been strictly blocked by the Germans and Japanese.

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Looking at the shiny balls in the silver steel tray that Binxin pointed at, Jin Xiaoqiang was also filled with excitement. Finally, in the field of machine tools, we at Huayang Power have taken another big step!

"Mr. Jin, this is what happened some time ago. I have been spending five months in our special steel smelting center and working with the technicians there to continuously explore and improve based on the technical information you provided.

The ball produced. I can responsibly say that the performance of the ball we are producing now is on the same level as that produced in Japan, and can reach 98% of the ball produced in Germany.

The power of."

There was a hint of pride in Zhang Hainan's expression, but more of it was excitement. Finally, he had been engaged in machine tool research for almost twenty years, and he finally made a breakthrough for China's machine tool manufacturing industry.

"Oh? Tell me in detail..."

"Well, in fact, the preliminary production of these balls is similar. The difference is in the final heat treatment stage. The iron ore powder is sent into the furnace to be smelted into molten iron, and then after a series of treatments, it is turned into blocks of plates, and then in the heat treatment

In this stage, it takes more than 36 hours of natural cooling to reduce the furnace temperature from the highest of 1,300 degrees to 500 degrees. During this period, spectrum vibration is also performed to eliminate the internal stress inside.

Then heat them up to 800 degrees, and then let them slowly cool naturally, so the cost of steel in this furnace is very high. After the steel plates come out of the furnace, they are directly cut into small square iron blocks of different sizes according to the specifications.

Pimples, then comes the grinding stage. After the grinding is completed, coating is carried out to coat the balls with an anti-corrosion and boron film that can make them hard and resistant to high temperatures...

"

Zhang Hainan talked with great interest, while Jin Xiaoqiang was also shaking his head as he listened. Finally, the ball production, which was the biggest concern of the ball screw bearing, was overcome.

Haha, I believe that as long as this news is released, there is no need to buy machine tools or parts at that time, just to buy balls directly, Huayang Precision will make a lot of money...

"By the way, Chief Engineer Zhang, when will you be able to use the balls we produce to manufacture qualified ball screw bearings?"

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