"This is just a theoretical number, right? Wasn't the theoretical accuracy of these within 0.02 at the beginning? Yun Fei sighed. This thing was too far from what he thought.

You must know that the theoretical accuracy of their three-axis machining centers has reached the world-class level of 0.005mm, and the top-level can fully ensure that the machining accuracy is within 0.01.

Such a level of machining center is not worse than those three-axis machining centers exported to China abroad. Otherwise, Jiuyi Heavy Industry's market share would not have remained so large, and it is even likely to encounter anti-monopoly laws in the future.

"The exact theoretical number jù is already high precision for the five axes at the ordinary level. But it can't reach the precision level......" Sun Lin sighed.

They've done their best, too.

"Moreover, the spindle we use in this spindle, the maximum speed of 12,000, gantry structure, in order to ensure the machining accuracy of the machine tool, the workbench is fixed, the tool moves in all directions, and the specific performance must be verified. The only trouble is the tool, Guo Chuan from the material factory has been improving the coating material, and I don't know when it will be successful......"

"The material is the foundation of the whole country, if it really doesn't work, let's get the best tools from abroad and come back for testing. People are more advanced than us, so we can't ignore it......" Yun Fei shook his head and said.

The entire group company may be affected by Yunfei, except for the top foreign instruments and equipment, rarely purchase foreign ones. And many of the top instruments are embargoed to China, and they, like those technicians in the Taizu era, rely on self-reliance, which has caused a great waste of research funds.

But Yun Fei didn't care about such a thing.

This money, no matter how much it is, it's just a bunch of numbers. God let him come to this world once, and he must have wanted him to leave something behind. Even if Bill has so much money, in the end, he hangs up, can't he take the money with him?

The greatest pain in life is that people die and leave countless lives with money that cannot be spent.

What about the riches? It's better to do something, and when the time comes, someone will always remember you.

Habit is a terrible thing. The entire Jiuyi Research Institute is now so sick that it doesn't use anything from abroad. These guys are counting on getting it out by themselves, and they don't need to pay for it anyway. What the big boss has is money, but the sense of honor of this achievement is their own.

Even if Yun Fei was unhappy about this, he had no way to stop it, for fear of discouraging the research enthusiasm of these technical researchers.

"How long will it take to complete the commissioning of this five-axis machine?" Yun Fei saw that the equipment that had been formed, the debugging program was running, and the machine tool was running back and forth at a fast moving speed, left and right, just to run in the guide rails......

"Running 24 hours a day, it takes more than three days. The five-axis machine has a rapid displacement speed of 18 meters per minute. This speed is a bit slow......" Sun Lin pointed to several staff members in white coats in front of him, constantly writing some five-axis machining centers with a number of jù on the notepad in his hand, and introduced various relevant parameters to Yun Fei.

"The three axes of X/Y/Z shouldn't be a big problem, right? Look at the swing range of the A axis and the C axis......" Yun Fei nodded.

This is a must be done before any CNC machine tool leaves the factory, and this process is to eliminate the assembly gap and find the necessary action to find the gap caused by the mistake during assembly.

Regardless of any device. The combination of the three most basic movement directions of X/Y/Z is the most critical.

Jiuyi Heavy Industry has begun to produce gantry machining centers a few years ago, and these basic parts of the technology and principle are the same, so what he hopes to see most is the C-axis based on the Z-axis swing rotation.

The rotation direction of this axis is ±220°. Adopt international standards.

The five axes, the most critical, are actually the fifth axis of rotation. After all, the basis of the four-axis is there.

The initial parameterization of the machine has been completed. Now the main thing is to debug, find out the problem, and improve the assembly accuracy of the equipment, these processes must be done by those experienced top assembly workers.

The reason why the performance of these machine tools produced by Jiuyi Heavy Industry is much higher than that of domestic counterparts is because they have the top assembly technicians in China.

Sun Lin whispered to a thin middle-aged man who was always paying attention to monitoring the operating parameters of the machine tool, and the operation of the machine tool stopped after a few clicks on the test console in front of the computer.

When the person in charge of debugging turned his head to take a look, it was suddenly Luo Feng, a technician who looked exactly like his master Zhao Jinshan, and let Yun Fei spend a million to buy it from Factory 132.

"Master Luo, the performance of these devices has been tested, right?" Luo Feng fully expressed his value in the research institute.

He is not a professional computer software engineer, but he can expand the domestic CAXA 3D drawing programming software according to his own ideas, and can also design more powerful plug-ins; More importantly, he is one of the earliest technicians in China, and he is very familiar with the various parameters and performance of these equipment.

After this guy was bought by Yun Fei, Factory 132 discovered his importance, and it was impossible to buy it back.

"We don't know what the performance of the foreign five-axis is, but the equipment we are engaged in has great defects in the processing of some key parts of the aircraft, mainly because the processing accuracy is not enough. In particular, the cumulative error is a bit large......" Luo Feng said calmly to Yun Fei.

The boss is easy-going and rarely cold-hearted to researchers.

"Problems with assembly clearances?" Yun Fei immediately frowned, "Didn't these questions reflect to Old Sun and them?" ”

Could it be that there is a problem with the close connection on the side of the research institute?

"A lot of problems are only discovered after a period of operation. Five axes, we don't have any experience, these things can only be found and solved a little...... "What Luo Feng means, how can Yun Fei not know?"

There's no way around it.

"We don't have enough time to develop slowly......" Yun Fei sighed.

Under Luo Feng's control, the spindle began to swing slowly, and from the point of view of the action, there was no problem, the only thing was the accuracy of the machining.

"These can only be known by machining tests after the commissioning is completed, and these things that are now seen theoretically are unreliable. Moreover, because the connector of the spindle adopts a hydraulic method, the swing speed is not too fast...... "For the actual performance of this latest five-axis machining center, Sun Lin and they are also a little uncertain.

Theoretical things are always not easy to achieve.

"Then let's go as it was. I heard that our test equipment turbo factory pulled one away? Yun Fei suddenly asked Sun Lin next to him, "What is their feedback?" ”

"It's not a big problem, the accuracy requirements of the impellers they produce are not very high, and the number of three-coordinate detection is the same as the test results we obtained, otherwise they wouldn't dare to use such equipment for processing, right?" Deng Lanqing said with a smile. "It's not just them who took one, but Factory 132 also took two. Because of the performance problems of these equipment, it was decided after discussion that 16 million per unit, and the 132 factory settled 20 million, and Xin Kaixing did not give a penny to ......"

"Money is not important, the key is to get the first-hand number jù." Yun Fei really didn't expect that Factory 132 would be so urgent.

In the next few days, Yun Fei stayed in the research institute to watch the various test numbers, and the supercomputers of the research institute analyzed them very thoroughly. The reason why the various research projects of the Jiuyi Research Institute can progress so fast is because of the constantly upgraded supercomputer named Cloud Jiuyi.

All kinds of large-scale computational simulations, modeling and analysis can quickly obtain test results.

After the equipment was debugged, Yun Fei didn't have the patience to continue to watch the test results here, because the tool wear was too strict. When processing aviation duralumin, it won't take long for the coating on the outside of the tool to be gone, and only by cutting the alloy matrix inside, the wear is even stricter.

As for imported knives, although Philip will soon be able to transport them through guò air cargo, the price is too expensive.

A three-tooth coated milling cutter with a diameter of 8mm is only more than 100 yuan in China, and the best foreign ones they bought are actually more than 60 euros! These things are still not exported to China, and even Philip got them from their treasury for the Jiuyi Research Institute.

It's almost life-threatening.

If the domestic can't provide the matching tools, the production cost is too high, it is likely to affect their five-axis sales, and the consumption of domestic ordinary tools is too high.

"If the Rongguo Expressway is repaired, it will be faster from Rongcheng to Guocheng...... "The highway from Rongcheng to Guocheng has not yet been repaired, and it takes nearly six hours to take the old road.

And the train is fast, and when it has not yet picked up speed, it is only a little more than four or five hours.

But whether it is a train or a car by yourself, this time is long enough, after the highway is repaired, from Rongcheng to Guocheng, it is only a two-hour drive, Yunfei originally laid out such a high-energy-consuming unit as a material factory and a factory like a foundry in Guocheng, which is because of these reasons.

Guocheng is close to the Jialing River and has abundant hydropower resources.

Industrial electricity is much cheaper than in Chengdu, and after the highway is built, the cost of transportation will be reduced on a large scale. The Jialing River can be navigated by 3,000-ton cargo ships, and there are also airports, and the preferential strength is far greater than that of Rongcheng.

Anyway, in Rongcheng, it is not close to the origin of various raw materials. (To be continued......)

PS: Thanks XL197911 for the big monthly pass.