Chapter 401

The plant of wheat mobile phone factory is about to be completed. Now it is waiting for the assembly line purchased by Germany and some equipment for producing mobile phone chips designed by Chengdu Electronic Research Institute to be installed in place.

According to kamat Ren Zhiguo, German equipment has been loaded on board and can reach Chinese customs in more than ten days at most.

As soon as those equipment get off the ship, the four transport planes of 91 airlines will fly these equipment directly from Huadu customs to Chengdu. Yunfei is worried that the automobile transportation will cause some damage to those German equipment.

You know, this is second-hand equipment, but Germany does not provide drawings.

Because of this, the price is only $7 million. If it is a new equipment, it must be at least more than $10 million. Of course, at a price of more than 10 million, people may not sell it.

Germany is not so stupid. China's imitation ability is more powerful than Japan.

In particular, the equipment for producing some simple electronic products, with China's mechanical manufacturing strength, can be copied in a short time as long as there are drawings. Even if the raw materials or processing accuracy are not qualified, it will not be too bad at China's manufacturing cost, even if it is changed once a year.

Now the mobile phone factory is waiting for the equipment to be installed after the plant is built, and then waiting for the North Korean college student assembly line workers to enter China. Yunfei began to focus all his energy on preparing for the construction of the vocational and technical school of 91 heavy industry and the acquisition of Chengdu Tool Factory.

Forced by the Jiuyuan base, Zhao Xingbang had no choice but to move the technical secondary school built in the mountains to train workers' children to Chengdu. At the same time, the school began to apply for college qualification from the Ministry of education.

For the relocation of the children's School of Jiuyuan, most of the money was paid by Jiuyi heavy industry. For this reason, Yunfei has paid more than 8 million yuan. What we can say is that Jiuyi heavy industry has complete autonomy in the teaching arrangement of the electromechanical college and the distribution of power to those students after graduation.

Jiuyuan has built two new machinery plants in Chengdu Economic Development Zone, one named Jiuding machinery and the other named Shenkun technology. Just because of the names of these two factories, Jiuyuan base and aerospace base almost had a fight.

When Zhao Xingbang asked Yunfei about the names of the two new machinery factories, Yunfei jokingly copied the names of the enterprises later restructured in aerospace. Later, the two enterprises didn't have any good benefits. Jiuding was just restructured from a workshop with only two or three hundred people producing automobile shock absorbers in the aerospace base; Shenkun also developed from a civilian product workshop, mainly producing some spare parts of mining machinery.

Yunfei did not expect that these workshops in the space base have not been completely relocated, and they have begun to prepare for restructuring.

It's immortal. Their two workshops are also going to be called this name.

If Zhao Xingbang had not registered with the Chengdu Administration for Industry and commerce, those Aerospace people would have no way. They didn't know how much to get.

Anyway, the situation that the base of the ninth academy has not dealt with the space base has lasted for decades.

In particular, in recent years, there were few orders for military products, especially the production and manufacturing of short-range missiles, which were robbed by the space base, so that the ninth Academy had to focus on the research of air-to-air missiles and mines that were completely unfamiliar to them.

In this regard, Yun Fei criticized unceasingly.

The ninth academy is just a base for making guns and guns and doing conventional weapons research. At the beginning, I didn't know what the high-level was crazy. I had to start the research and production of short-range missiles in the ninth Academy.

Aerospace was originally a research and production base focusing on the production of missiles and rockets. Similarly, the leaders of higher-level departments took the wind and asked them to start the research and production of conventional weapons, but mainly on some heavy howitzers.

In the state planned economy, the two close bases can live in peace. Anyway, no matter how much or how little production is, the wages and bonuses are the same, neither more nor less. However, after the international situation has changed, the national strategic focus has been adjusted, military orders have dropped sharply, and a competition mechanism has been started. How can the two bases have many overlapping production tasks without contradictions?

"Boss, we haven't fully understood the technology of the three-axis machining center, so we began to make motorized spindles with fast speed. Is it a little big?" Sun Lin frowned when he heard Yunfei's words.

He knew he couldn't let the young boss idle.

As soon as you are free, there will be a lot of wonderful ideas and technical projects that are not easy to realize.

"This is not contradictory to our research on machining center, is it? The conventional spindle can no longer meet the performance of higher performance CNC machine tools. We need to go ahead in the research. " Yun Fei shook his head.

It is difficult for the traditional transmission mechanism to improve the spindle speed of NC machine tools on a large scale.

Yun Fei, as a person from the past, knows that the spindle of the machining center becomes an independent motorized spindle unit, which is the inevitable trend of the development of the machining center, because only the machining center with a wider range of spindle speed change can adapt to the constantly changing products and materials.

In the future, China's machining market, as long as the products of the processing plants are produced in small quantities.

In particular, the processing of high-precision complex parts can only be processed at tens of thousands or even hundreds of thousands of revolutions.

The higher the spindle speed, the smaller the stress generated in the machining process. In particular, CNC milling machines or engraving machines use very small tools. If the spindle speed of the machine tool is not high enough, the lower the speed of the position on the center point of the tool tip, so the processed products can not meet the design requirements at all.

"Only by simplifying the mechanical structure of the main transmission system of the machine tool can it be easier to provide the performance of the machine tool. Now, whether it is a pulley drive or a gear drive system, if we want to increase the main shaft, there is no way except to increase the number of gear sets or use higher power motors? " Yun Fei asked the technicians in front of him.

Everyone nodded.

The machining center is different from the NC milling machine. The spindle that produces the main motion and rotates at high speed has to move up and down continuously. If the spindle unit is too heavy, it will not only wear the guide rail seriously, but also deform the column of the machine tool due to gravity in a short time.

"Do you mean to integrate the functions of machine tool spindle and spindle motor?" Sun Lin was surprised that Yun Fei dared to think.

At the same time, the Chengdu University graduate students he took with him were also stunned. They didn't come to the machine tool business department of 91 Research Institute for long. Moreover, they came here mainly to study. Who told their tutor to work for the young boss of 91 heavy industry.

After knowing that academicians Sun Lin and situ Heyun would not look back on the National Academy of Sciences, many university leaders in Chengdu came to invite these academicians who are at the top level in China to take master's or doctoral students to their school. Originally, several old goods disagreed, But Yun Fei was not willing to give up so many labor forces who helped Jiuyi heavy industry to do research for free, so he encouraged several old guys to agree.

In this way, many talents studying machinery or mechatronics, or materials have been brought to their own flag by Yunfei network. Although these people are likely to only stay in 91 heavy industry for a few years, it is enough for Yunfei.

These are students. They don't have to pay!

Moreover, they basically do some basic research work. Even if they develop any technology, they belong to the 91 Research Institute. Although they are not paid, their research projects are funded by the 91 heavy industry!

"Yes, by combining the motor with the spindle in one unit, we can not only improve the spindle performance of our machining center, but also simplify the structure of our machine tool and reduce the difficulty of assembly..." for the advantages of the motorized spindle system, But few people know better than Yun Fei.

Motorized spindle has the advantages of compact structure, light weight, small inertia, low vibration, low noise, fast response, high speed, high power, simplified machine tool design and so on. More importantly, it is easy to realize the accurate positioning of spindle.

The positioning of spindle of machining center is a very important index of machine tool.

"Do you want the spindle unit of the machine tool to be independent? At the same time, direct and gapless transmission is adopted directly? How should such a technology be implemented? " Although he is a top expert in China, Sun Lin's imagination in this regard is indeed limited.

Sun Lin's graduate students from the school of machinery of Chengdu University can only listen in amazement as their tutor discusses these advanced technologies with this little boss who is much younger than them.

Although they have studied for many years, they don't understand these technologies that they haven't even heard of.

"At present, foreign countries have just started. This spindle unit mainly adopts AC high-frequency motor for direct transmission without indirect transmission mechanism. The motorized spindle unit is mainly the motorized spindle itself. We can regard it as a motor with a long spindle; High frequency frequency conversion device is mainly used to realize speed control; The built-in encoder is used to control the machine tool program transmitted from the NC system; Cooling device, oil mist lubrication device, tool changing device, etc... "

Yun Fei explained some of the structures of the motorized spindle he had learned. At the same time, he drew a simple structure diagram of the motorized spindle with chalk on the huge blackboard in the conference room.

"Xiao Yun, how much did it cost you to get this technology?" Sun Lin doesn't believe that Yun Fei got such a picture without spending money.

Although it is very simple, with this diagram, they can take a lot of detours in their research.