The Red Era, the Opening University Speech

Chapter 307: Ensure that the error does not exceed 0.008 mm
"We are really scared." Everyone couldn't help but say in their hearts.

Not everyone has the confidence of Li Mu, who always sets the highest standards.

If collective wisdom and efforts really worked, they would have solved all the problems long ago.

The professor who had just spoken continued to ask: "So, Advisor Li, what is your plan?"

When he spoke, everyone woke up from their shock and showed anticipation.

Li Mu said:
"First, we must build titanium alloy and aluminum alloy production equipment, ovens, uniform lathes, extruders, tensile breakers, saws, etc. I will lead mechanical engineering experts and professors to draw these drawings using CAD later."

"Then there is the study of plastic materials. After the meeting is over, the material experts and professors will stay for a while."

"I will provide you with a research plan for reference. Of course, whether it will work or not still requires us to discuss it together."

He spoke very quickly and arranged everything clearly in just a few sentences.

The most important issue in industrialization is actually getting the materials right.

If they solve this problem, they will be halfway to success.

……

Afterwards, Li Mu arranged some research on other parts of the 3+2-axis CNC milling machine.

According to the structure of the milling machine, the main transmission system, feeding system, workpiece rotation and positioning device, automatic tool changing device, etc., it is divided into 7 research groups.

Then there is the question of programming.

The Semiconductor Research Institute is still developing the second-generation supercomputer, so not many people can be transferred over.

Li Mu set up a programming team with Su Dongzhuang as the center:
"Accurate tool path planning and efficient programming methods are the key to solving programming problems. However, when you achieve these two points, you must also ensure safety and avoid the possibility of equipment damage and safety accidents caused by improper programming."

His tone was quite stern.

The cost of a 3+2 CNC milling machine is at least hundreds of thousands, and this is without considering the R&D costs.

Not to mention the investment of manpower and material resources.

If a programming error causes damage to the equipment, even if only one device is damaged, the loss will be significant.

"Don't worry, Consultant Li. I promise to complete the task and not bring shame to our office!" Su Dongzhuang said in a firm voice.

He, Yang Tianxing and Zhou Xiling entered the Semiconductor Research Institute together.

Then Li Mu went to Sichuan and Chongqing, but did not take him with him.

I'm so excited!
"Confidence alone is not enough. Tell me your ideas and how to carry out the work." Li Mu smiled and continued.

Today, the entire research team consists of people from all over the world. After all, Su Dongzhuang is young, and it is inevitable that people will criticize him for taking on such a big task right away.

Just raise the problem and solve it first.

As soon as he finished speaking, a group of experts and professors turned their eyes to Su Dongzhuang with a test in their eyes.

If Li Mu were to be the team leader, they would definitely agree.

But for this young comrade, it depends on his ability.

Su Dongzhuang looked at the eyes of the crowd and stood up straighter. He said:

"According to the solution provided by consultant Li, the core content of 3+2 axis CNC milling machine programming includes designing tool compensation, plane selection, coordinate system conversion and specific programming instructions."

"Our next programming direction is to improve the instructions and control the radius compensation during tool processing through modal codes."

"Then comes the conversion of the coordinate system, and through programming, we ensure that the direction of the tool axis and the vector of the machining surface are consistent..."

……

His voice trembled slightly due to nervousness.

It wasn't until Li Mu raised his hand and clapped for him that he finally let go of his worries.

Seeing this, the other experts and professors also applauded:

"Well said, you are worthy of being from the Semiconductor Research Institute. It turns out that anyone who can be recommended by Consultant Li must be capable."

"Who says it's not true? Even I, who is from the Institute of Computing Technology, am ashamed of myself!"

"If you ask me, Consultant Li is really good. If he becomes a teacher, he will definitely be able to train a large number of talents in computer technology for our country."

……

Listen to the praises around you.

Su Dongzhuang didn't get angry because everyone's praises suddenly turned to praising Li Mu.

Instead, I felt secretly happy.

So, I am still Consultant Li’s student?
Of course, although he thought so, he didn't dare say it out loud.

After all, with Li Mu's ability and fame, the number of people who want to become his disciples would probably fill up Kyoto Square.

Wait until the applause stops.

Li Mu walked forward, patted Su Dongzhuang on the shoulder, and encouraged him: "It can be seen that you have put in a lot of effort. The programming team will start researching according to what you said. If there are any problems that cannot be solved, come to me again."

After saying that, he turned and left, leaving the latter free to play.

In fact, what Su Dongzhuang just said is not without any problems.

But as the person in control of the overall situation, he cannot always focus on the details. Letting them solve the problems themselves is the most efficient way.

As long as the general direction is correct, it's fine.

……

Turning around, he came to the main transmission system research team.

The main transmission system of the 3+2 CNC milling machine includes three parts: spindle motor, transmission system and spindle assembly.

The spindle motor is the power source that drives the spindle to rotate. The transmission system is responsible for transmitting power to the spindle, including transmission elements such as gears and belts, to achieve different speed and torque requirements.

The main spindle component is the load-bearing and supporting structure of the spindle motor and transmission system, ensuring the stable operation and precise control of the spindle.

In the 60s, the spindle drive system of CNC milling machines was basically a DC motor, which had high output power, wide speed regulation range, and high maintenance cost.

Therefore, Li Mu proposed the idea of ​​studying the AC spindle drive system.

He said:
"Based on the laws of electromagnetic induction and electromagnetic force, the motor is driven to rotate through a three-phase AC power supply to achieve mechanical energy conversion."

"When the symmetrical three-phase winding on the stator is connected to a symmetrical three-phase power supply, the power supply supplies particle current, establishing a rotating magnetic field that rotates at a synchronous speed in the air gap between the stator and the rotor."

"This rotating magnetic field interacts with the conductor in the rotor to generate induced electromotive force and induced current, which in turn generates electromagnetic torque, realizing the conversion of electrical energy into mechanical energy..."

……

Seeing Li Mu start to speak, people who were familiar with him started taking notes.

This reaction left many experts and professors who had just been transferred from other places somewhat puzzled.

Although Li Mu is very capable, he wouldn't ask them to take notes like students.

We all have the same brain, how can we not understand what they are saying?

But as they listened, they found that Li Mu spoke faster and faster, and gradually their thoughts could not keep up with the pace.

Although it's not so difficult to understand, it's still very difficult to keep up.

I could only hurriedly pick up my notebook and write it down.

……

It took the better part of an hour.

Li Mu first solved the problem of the main transmission system.

Then I continued to go to the other six groups and guide their research plans one by one.

Fortunately, before he came, a group of experts and professors had already studied it for a period of time. He didn't have to spend a lot of effort to start from the most basic, which made it a lot easier.

With the help of CAD, the feeding system, attack rotation and positioning device are not difficult to solve as long as you are willing to spend time.

The difficulty lies in the precision control of parts.

This places almost stringent requirements on senior workers for precision control.

Although he had confidence in the workers, he had to go and see for himself to feel at ease.

Therefore, after leaving the last research group, he came to the eighth-level workers who were summoned.

Seeing him, everyone stood up and greeted him:
"Hello, Counselor Li."

"Advisor Li, what instructions do you have?"

"You can ask for anything you want, our technology will satisfy you!"

……

Everyone looked at Li Mu with respect.

Although they have the technology, they cannot come up with as many amazing inventions as Li Mu can.

Not to mention other things, semiconductor televisions, semiconductor radios, etc., no matter how advanced their technology is, it is impossible for them to design them.

Therefore, there is only one word to describe Li Mu - admiration.

"You don't have to be so polite. I just came here to take a look and understand how high the precision of parts you can make is." Li Mu said with a smile.

While speaking, he also saw an acquaintance among the workers - Uncle Zhong from his own compound.

An old worker said, "Consultant Li, just tell us. We guarantee that the error will not exceed 0.008 mm. We can definitely meet your requirements."

"If it's not enough, we can always find a way to improve it!"

The other Level 8 workers also spoke up, their words full of confidence.

"That's enough, that's enough. I'll leave the subsequent processing to you masters." A smile appeared on Li Mu's face.

This precision is not only sufficient, but even exceeds it by a lot.

Even in later generations, the error range for most precision parts processing requirements is only between 0.005-0.02 mm.

"There are still a few people." Li Mu looked around and saw that there were only about twenty people.

In a factory with thousands of employees, only a few can be rated as eighth-level workers.

These old masters are probably all the eighth-level workers in Kyoto, plus some who came from surrounding areas.

The final number of people should be around forty or fifty, which is barely enough.

……

Leave from the senior worker group.

Li Mu raised his watch and looked at the time.

It's already 7: in the evening.

After getting off the train, he has been busy almost non-stop until now, and his stomach is growling with hunger.

Just as I was about to go eat, a voice came from behind me: "Advisor Li, this way."

Turning around, it turned out to be Tang Yanjie.

"Dean Tang, you are still here?" Li Mu was a little surprised.

Judging from his appearance, he also seemed to have spent an afternoon in the First Machine Tool Factory.

Tang Yanjie smiled and said, "Of course I will be there. I am the general commander of the development of the 3+2 axis CNC milling machine this time. I have to take care of the entire logistics work."

"You must be hungry after being so busy. Let's go to the canteen. I grabbed you right after we got off the bus. I'll give you an extra meal today."

As he said that, he pulled Li Mu to the cafeteria.

(End of this chapter)