Rebirth 2008: I Can Make Money Reading

Chapter 369 Scaring the New Employees Out of Their Souls

The pulse motor that Mu Yang plans to study actually refers to the stepper motor and servo motor, both of which are controlled by pulse signals.

Servo motors are divided into AC servos and DC servos, among which AC servos are divided into synchronous motors and asynchronous motors.

The permanent magnet synchronous motor produced by the company is actually a kind of synchronous AC servo motor. The rotor is not a coil or induction material, but a permanent magnet.

Mu Yang intends to study the CNC machine tools used in 3D printing. There are many parts on the CNC machine tools that need to be driven by motors, such as spindles, tool holders, and feed axes.

The main shaft generally adopts AC asynchronous motor, stepper motor for low-end CNC machine tools, and servo motor for mid-to-high-end CNC machine tools;

As for the feed shaft, an AC synchronous servo motor can be used, that is, the company's permanent magnet synchronous motor can also be used.

The motor is a very complicated thing. Muyang has sorted out the positioning of the company's CNC machine tools, and figured out what type, power, maximum speed, torque, etc. are needed, but there is still a lot of work to be done.

Researching this motor is also very tiring, and I feel bored after sitting in the office for a long time. I stood up, looked at a silver dragon fish and two golden dragon fish in the fish tank, and took out the feed to feed them.

Fish should be raised in numbers, that is, one, three, five, seven. A fish tank can have up to seven fish. If there are two fish, then there will be fights, and another fish must be persuaded to fight.

If you keep a lot of fish, it is estimated that some fish will die from fighting every day. This is not just a problem of lack of oxygen.

Silver dragons are worthless, and the most expensive ones are dragon fishes. The better the color, the purer the color, the larger the size, the more valuable it is.

These unorthodox knowledge was told to him by a fish farming employee. Mu Yang didn't know much about it, and he didn't know whether it was true or not.

After looking at the fish for a while, he walked out of the office and planned to take a walk in other offices.

A few minutes later, I happened to pass by a training classroom, and I saw an engineer giving training to newcomers, and the lecture was on the knowledge of electric motors, which had just begun.

The company has many types of training. Some newcomers can participate in training according to their preferences, but some trainings must be attended if they are related to their major.

After the training, you have to take the exam, which is the most troublesome thing for newcomers.

Of course, it is of great benefit to them to learn practical knowledge.

The PPT made by the trainer has to be reviewed by experts. It is not just perfunctory, and the time of newcomers is also precious.

These training materials should be stored in the company's database in the form of standard documents, and can be used for training every year, which saves a lot of time for the trainers.

The trainers are generally senior engineers, and there are relatively few lectures by experts.

Mu Yang stood quietly at the back door of the training room, a little curious about how the training teacher would teach.

The trainer, who was about forty years old, didn't notice Mu Yang outside the back door. He said enthusiastically: "Colleagues, my name is Chen Fangtong. I am a senior engineer at the Automotive Research Institute. I mainly research motors. I have participated in the company's permanent magnet synchronous motors. research and development.

In 2000, I graduated from Shencheng Jiaotong University with a master's degree in automation. I have been in the company for more than a year, and I am very happy to work with you.

Perhaps, in this classroom, there are dozens of colleagues, maybe there are my alumni.

However, in our Xinghai Group, we must not engage in school disdain chains, but focus on team spirit. Everyone must put aside their education, qualifications, schools and abilities, and we only talk about contributions to the company.

It is useless to have the ability but not contribute to the company.

Those who are capable and do nothing are not as good as front-line workers. They directly create value for the company.

Well, enough nonsense.

The content of this class is mainly about servo motors and stepper motors, which is also an important research project of our company at present.

Before talking about this knowledge point, let me ask you the simplest question, what is a motor? "

Most newcomers understand that this question is too simple.

For Chen Fangfeng, this question was actually used to adjust the atmosphere of the lecture, not just for the sake of asking.

Chen Fangtong glanced at the newcomers in the audience and answered, picked up a bottle of mineral water, opened the bottle cap and took a sip of water, then asked and answered by himself,

"From the perspective of appearance, motors are divided into motors and generators.

A motor converts electrical energy into mechanical energy, while a generator converts thermal energy and water energy into mechanical energy first, and then converts mechanical energy into electrical energy. This is easy to understand. If you don’t understand it, it means that you didn’t learn physics well in middle school. "

After the training teacher told this, many people in the classroom laughed. This is popular science knowledge, but not to mention, some liberal arts students really don’t know it.

You may even ask, what is electricity? What is a machine?

"We often hear about pulse motors, stepper motors, servo motors, DC motors, AC motors, asynchronous motors, permanent magnet synchronous motors, constant speed motors, three-phase asynchronous motors, etc., and make a mess. What do they have? Relationship, if you really want to carefully distinguish and explain it, it is more complicated. I guess many colleagues don’t understand it. "

Among the newcomers in the audience, some people really don't understand motors, not to mention him, even Mu Yang in his previous life, he also couldn't understand stepper motors and servo motors.

Of course, Mu Yang is now an expert in this field, of course he understands this.

This Chen Fangtong starts with the simplest knowledge, and first talks about classification, which is to sort out everyone's knowledge points, which shows that his thinking is very clear.

Chen Fangtong talked eloquently: "According to the classification of power supply, motors can be divided into DC motors and AC motors;

According to the classification according to the structure and working principle, the motor can be divided into asynchronous motor and synchronous motor according to the structure and working principle. Synchronous motors can also be divided into permanent magnet synchronous motors, reluctance synchronous motors and hysteresis synchronous motors. Asynchronous motors can be divided into induction motors and AC commutator motors.

The technical level of our company's permanent magnet synchronous motor has reached the first in the world, and it is much higher than the international counterparts.

The best-selling Hummer EV is equipped with our company's permanent magnet synchronous motor. You see, this is a photo. After the lecture, I will take you to the automation laboratory to see how our company's permanent magnet synchronous motor is produced. of.

Of course, photography is prohibited!

It is also forbidden to spread it outside. The Human Resources Department should have told you about the confidentiality regulations. "

"Wow! Our company is Niubi!" the newcomers exclaimed, carefully looking at the motor photo on the screen.

"The Personnel Commissioner has talked about the confidentiality issue, let us pay attention."

A newcomer raised his hand, and Chen Fangtong nodded after seeing it: "Please tell me!"

With Chen Fangtong's consent, the newcomer who raised his hand asked, "Mr. Chen, may I ask, I'm a little curious, how much does our company's permanent magnet synchronous motor cost?"

"I'm not sure about this. It depends on the power and model. According to the model of the Hummer EV, I heard that it costs 70,000 yuan to sell to Hummer. If it is sold to other car companies, it must be more expensive, and it is definitely not the best. Advanced, not yet sold to competitors.

Of course, our company's Hummer EV has no competition. "

After some thought, Chen Fangtong said, "If you are interested, you can also enter the Automobile Research Institute after the trial period is over. Maybe you have the opportunity to visit overseas factories, and even study and work."

Chen Fangtong's words sparked a lot of discussion among the newcomers.

"Haha, that's right, if you have money, you don't sell it to foreigners. Even if you sell it, it's inferior. Our company is awesome!"

"The Hummer EV is too awesome, the bullock cart of my dreams! I don't know if I can afford it in this life."

"The chairman said that the Hummer EV is going to be localized, and I don't know how much it will cost."

"It's definitely not cheap. Most people can't afford it. Teacher Chen has a year-end dividend. Maybe he can afford it if he is self-willed."

"That's right, Mr. Chen, if we buy the company's car, is there any discount? How much is the discount?" A newcomer raised his hand and asked. Many colleagues were curious about his words.

Yes, the company produces its own cars, and the company sells them to its own employees. There should be discounts. The Hummer EV is really beautiful, but it’s too expensive to afford.

Chen Fangtong smiled and said: "To be honest, I also want to own a Hummer EV. As for whether there is any discount for company employees to buy company cars, the company has not disclosed the news yet. Even if there is, it will be limited, and I want to sell it." It is impossible to sell to make money.

But the Hummer EV is too expensive, no matter how favorable the company is, it is still very expensive for us ordinary people.

Of course, there's still a chance we can afford it. "

Under the interaction of Chen Fangtong, the newcomers feel very proud.

They can show off in front of their classmates, relatives and friends: I am an employee of Xinghai Group, and the Hummer EV is produced by our company.

Chen Fangtong knocked down the table and continued: "Okay, the bragging mode is over, whether we can continue to compete in the future depends on everyone's hard work.

I went on,

Categorized by startup and operation mode...

Classification by use Motors can be divided into drive motors and control motors by use.

Control motors are divided into stepper motors and servo motors, etc., which is what we will focus on next..."

"Speaking of this, I have to say the status quo of the development of servo motors in our country, that is,

very bad!

Very pessimistic, it can be said that the whole army was wiped out!

Small is not small, big is not big!

How do you understand it? Small power servo motors cannot be miniaturized, and are generally too long. For example, 200W and 400W servo motors are commonly used in light-loaded robots. At present, Panasonic’s A6 uses Yaskawa Electric from the island country. They are short and exquisite.

In contrast, domestic servo motors are generally longer and rough in appearance.

That is to say, with the same power, we have made it larger than others, and we cannot make it lighter or smaller.

If the volume is too large, it will definitely affect the posture of the robot, and there must be interference. Who will use it!

This is not small!

Large or not refers to the fact that most of the domestic servo motor OEM manufacturers imitate the design of RI servo motors according to their market share. The power is mostly within 3kw, mostly small and medium power, and the volume is still large.

However, there is no medium and high-power servo of 5.5-15kW, resulting in the application of some equipment, because there is no high-power servo motor and drive matching, resulting in the abandonment of the entire system.

This is the tragedy of our country, colleagues.

Domestic manufacturers that can solve this problem can count on our Xinghai Group. You are likely to participate in this important task. "

After Chen Fangtong talked about the status quo of domestic servo motors, the newcomers felt very heavy and felt a lot of pressure.

Yes, if the Xinghai Group is unable to break the foreign monopoly, which domestic company can?

No!

"Mr. Chen, what is the difference between our country's servo motors and foreigners' servo motors?"

Chen Fangfeng said: "Leaving aside the basic technology, it actually has a certain relationship with the market size. Last year, the market size of domestic servo motors in my country was about 3 billion yuan (excluding motors used in new energy vehicles and imported servo motors). It will develop at a growth rate of about 15%.

The market size is small, and I don’t have the confidence to compete with foreigners. I don’t think there is much to do. It’s better to invest in real estate to make more money, right?

The market size is small, so it is difficult to form an industrial chain. As a result, those who make motors make motors, those who make encoders make encoders, and those who make drives make drives. do it!

For example, our company's second-warranty welding machine is powerful, the technical level is the first in the world, and the price is cheap. OTC can't match it. Matsushita has been driven out, but why can OTC continue to survive in Huaguo?

We don’t have robots. OTC sells arc welding robots equipped with our own secondary welding machines, which are highly compatible overall.

If we have our own robot, equipped with our own secondary welding machine, as well as our own control system and operating system, etc., then OTC will definitely have no way out.

Now that we are engaged in servo motors, if the top management of the OTC company knows, it is estimated that they will not be able to sleep. "

When the couple heard Chen Fangtong's words, they couldn't help laughing.

As soon as the Xinghai Group made a small move, the competitors trembled.

We are better than each other!

Chen Fangtong also said, "my country's servo motors are poor, followed by the lack of basic research on servo systems, including absolute encoder technology, industrial manufacturing technology of high-end motors, breakthroughs in production technology, practical verification of performance indicators, and the establishment of assessment standards. formulate.

Other manufacturers don't do it, but we have to do it. This is the responsibility of the enterprise.

We don't need to engage in real estate, that's too low, we are a high-tech enterprise.

I don't need to say more about the importance of servo motors.

Moreover, the international market is huge, and our Xinghai Group is also confident in competing with foreigners. When the time comes, foreigners will tremble. "

"Haha, shivering!"

Chen Fangtong's humorous language attracted roars of laughter from the newcomers.

Next, Chen Fangtong explained to his own PPT, without going into too many details, but in a shallow way, let them get a general understanding first.

From time to time, the newcomers in the audience sighed "Oh, so it is like this", they should either take notes, or take out their mobile phones to take pictures first, and plan to go back and tidy up.

Suddenly, Chen Fangtong found the chairman standing by the back door, and after a moment of cleverness, he still said hello:

"Oh, our chairman is also here. He is also an expert in this field. Welcome to the chairman. Would you like to say a few words?"

When he shouted, the newcomers looked back.

Sure enough, it was really the chairman.

The rookie who was sitting in the back row listening to the class just now was a little distracted, and his soul was scared out of his wits. Fortunately, he didn't doze off, otherwise he would have died of embarrassment.

The chairman's eyes felt like a death stare!

Mu Yang walked into the training room, with a slight smile on his face, applauded and said: "Chen Gong spoke very well, and the atmosphere is also very active. The training materials are all the dry goods and experience accumulated by the trainer. There are many online and books. If you can’t find it, you must learn more, and if you don’t understand, you must humbly ask the trainer for advice.

That's all I'm going to say, keep on training and don't bother you anymore. "

After Mu Yang finished speaking, he turned around and left the training room, closing the door behind him.

Everyone breathed a sigh of relief after seeing the chairman leave, even the trainer Chen Fangtong did the same, he was not so nervous anymore.

In fact, a newcomer noticed the chairman standing at the back door just now, but he didn't remind the others, and continued to listen carefully to the class and take notes.

The back door creaked again, and everyone saw the chairman push the door and walk in, which shocked everyone.

Isn't it already gone?

What's the matter with coming in again?

Chen Fangtong planned to continue lecturing.

"By the way, just now an employee asked if there is a discount for buying the company's car. Of course, it is possible. How much discount can be given? We will discuss it after the localization. Well, there is nothing else, and I will disturb your training."

After Mu Yang finished speaking, he closed the back door and left directly.

Now, the newcomers in the class, especially the newcomers who are a little dozed off, immediately wake up to 120% to listen to the class.

They are really afraid that one day, they will suddenly be caught by the chairman of the board when they doze off, and then they will be expelled from the company.

The chairman's routine is too deep.

Mu Yang returned to his office and continued to study motors, starting with servo motors.

Chen Fangtong is right. Motors, encoders, drive systems, and materials all need to be studied.

Trends that can be clearly felt in the field of motion control drives: motors are becoming ever more compact, their dynamic performance is increasing, the power range is expanding, motor variants are wider and mechanically integrated solutions are being used.

In robots, motors are required to be compact. In the aviation field, the requirements are even more stringent. Under the condition of constant power and structural strength requirements, the lighter and more compact the better.

The additive technology can solve the problem of reducing the weight of equipment, which is also one of the best ways. The other is to find high-strength and light-density materials instead, such as graphene materials.

Graphene materials have a long way to go, it is difficult to mass-produce, the price cannot be reduced, and it cannot be widely used.

Mu Yang has studied graphene materials, and feels that now is not the best time.

Just like the 3D printing technology LDM01 he bought from the achievement point store, even if he manufactures the LDM01 equipment, the mechanical properties of the 3D material can theoretically reach the level of forgings.

Reaching the level of forgings is already a technological change, but forgings are also different.

Therefore, Mu Yang does not have much hope for LDM01, but it can also help him solve many problems, such as the casing of the motor, the casing of the battery pack and other structural parts that need to be lightweight, which can all be solved with 3D printing technology. Lighter and stronger.

There is no manuscript, no status, and it is not easy to write. If you want to update more, there is really no way.