"Everyone, please come with me."

Wang Peiyi led everyone to a workshop, and the windows were also closed with curtains. There is a large workbench in the middle, enough for 10 to work around, put a device similar to an electric motor on the workbench, it is actually 0.5 meters high, the length is more than 1 meter, there are some parts next to it, 4 large wattage electric lamps are hung on the top of the workbench, and there are 6 floor lamps next to the workbench.

Standing next to him was a middle-aged man wearing a tunic, four pockets, and deep glasses.

"This is Comrade Zhao Gang from the ****** Laboratory," Wang Peiyi introduced, and then introduced the others separately.

"This is Comrade Du Guigui of the ****** Factory."

"This is Comrade Liu Zhe of the First Machine Tool Factory."

"This is Comrade Ma Yimin of the Precision Instrument Factory."

"This is Comrade Ma Tong from the ****** Factory."

"This is Comrade Zhao Haiyang from the ****** Factory."

"This is Comrade Wei Haibin from the ****** Factory."

"This is Comrade Li Guocheng from the rolling mill."

After everyone shook hands with each other, they said hello, and when they saw Li Guocheng, Zhao Gang was also stunned for a moment, and then said nothing, obviously his cultivation was very good.

"This is a motor, as for the source, you don't want to know, anyway, it's precision and low noise. When we first got this motor, we tested it in a special laboratory, and the noise was only 30 decibels, but after disassembling and mapping, it was found that the noise exceeded 65 decibels after installation, and the experts through experiments and analysis, it should be caused by assembly, so today please try it and come up with an assembly plan that can reduce noise", Comrade Zhao Gang introduced.

Everyone gathered around and looked at the motor in amazement, and after understanding all the parts, they began to study the survey paper. Li Guocheng also carefully observed, according to the structural characteristics, found that this is a DC motor with a brush 16 armature, the structure is relatively simple, but found that the air gap of this motor is less than 1mm, which is much smaller than the air gap of the current common motor.

"The structure of this motor is the same as that of a conventional motor, but the size is larger, we have re-mapped the coils of the stator and mover, and everyone has heard it just now, and we ask the masters to help find out the reason", Zhao Gang came over and explained.

After reading the drawings, everyone looked at each other.

"This is the standard motor, the stator does not move during surveying and mapping, now it is mainly the rotor, the main body of the rotor, a bearing on the top and bottom, brushes, upper and lower covers, a very standard structure, very simple, at a glance" Comrade Liu Zhe wondered.

"Yes, I don't see where there is a problem," Comrade Ma Yimin agreed.

"The only special point is that the air gap is smaller, and this does not affect the assembly," said Comrade Zhao Haibing.

"At present, there is no problem with looking at various indicators, let's get started and install it", Du Gong concluded.

"Agreed," everyone agreed.

Then it is mainly Du Gong, supplemented by others, of course, Li Guocheng is the youngest here, acting as a labor output.

During the installation process, Li Guocheng modeled all the components in three positions and found no problems. After everyone works together to complete the assembly, as soon as the power is on, there is no need to measure the equipment, and it is found that something is wrong when you look at the vibration of the motor.

Everyone began to disassemble again, dismantling, observing, discussing, and when it became parts again, everyone was staring at each other. But everyone is an assembly master of various factories or institutions, and they don't talk about it, but they all have their own pride.

So next, Li Guocheng is the most tired, each master personally led the installation, some of the effects have improved, some are worse, the overall is not obvious, everyone is in thought.

"Xiao Li, you can try it too", Du Gong saw that everyone had tried it, but Li Guocheng had not tried it, so he reminded.

In the process of assembling each other, Li Guocheng observed through modeling, and personally felt that he already knew the answer, that is, this motor is too large in size, and the requirements for dynamic balance are very strict, these masters do not seem to realize that in their respective assembly processes, they only pay attention to whether each component is installed in place, whether it meets the requirements of surveying and mapping, and has not paid attention to the whole, nor has it seen the deformation of some parts of the stator coil.

"Master Du, masters, everyone is a master, I won't be ugly", before everyone finished speaking, most of them showed disdainful expressions, and some people even cursed in a low voice.

Looking at everyone's performance, Li Guocheng is not ready to save face for everyone.

"However, I don't know if you have noticed, due to repeated installation and disassembly, there is a slight lack of tightness between the bearing and the stator, which is not the point, everyone look here", said Li Guocheng pointed to a coil on the stator.

"Look, the coil here is a little deformed, and it's collapsing a little inward...

didn't wait for Li Guocheng to finish speaking, Wei Haibin rudely interrupted Li Guocheng's words: "You little fart knows a fart, this deformation and on the whole, there is a fart influence, don't know how to pretend to understand, if you are capable, just assemble it and take a look, the flyover handle, just talking and not practicing, the most annoying thing for you related households, such an important task, you dare to make up the number", it may be that he has not found a solution, so that Wei Haibin found Li Guocheng to vent the depression in his heart.

"Wei Gong, the old man said, there is no right to speak without investigation, you didn't draw conclusions without listening to my opinions, it's too arbitrary", Li Guocheng was also a little angry, in the process of assembling everyone, there were many problems with this Wei Gong, either he disliked Li Guocheng and took it high, or he took it crookedly, and Li Guocheng also put up with him for a long time.

"Arbitrarily you are a poop, what have you done in addition to your efforts throughout the whole process", Wei Haibin has already exported as 'dirty'.

"Wei Gong, please control your emotions", Wang Peiyi stepped forward to stop it at the right time.

"You go on", Wang Peiyi then said to Li Guocheng, in fact, he was also a little disappointed, so many old fitters, none of them were useful, although he didn't have much hope for Li Guocheng, but a dead horse was a live horse doctor, so he had the idea of trying it out, in case it could be done.

"I went on to say, here, here, and here, the coils in these parts are deformed to varying degrees, because the rotor is large in volume and weight, these small deformations will destroy the original dynamic balance of the stator, and the motor will shake in high-speed operation, especially for such a large volume of motor, a small imbalance will bring a large shock, not to mention so many visible deformations", Li Guocheng talked eloquently, noticed the confused expression of the person next to him, deliberately ignored it, and finished speaking directly.

"Don't use these words to fool us, you have the ability to assemble it to see the results", Wei Haibin was still unconvinced.

"I'm sorry, I can't assemble it... , Li Guocheng was interrupted by Wei Haibin before he finished speaking.

"Look, I'll just say it, there is no hair on the mouth, I don't work hard, I can only talk on paper", Wei Haibin shouted happily, the others watched the excitement with their own hearts, and Wang Peiyi and Du Gong did not speak again.

"Wei Gong, please don't interrupt my speech all the time, it's rude", Li Guocheng didn't want to give him face anymore.

Seeing that Wei Haibin was about to speak again, Wang Peiyi directly stopped: "Listen to Xiao Li, maybe the problem will be solved."

Wei Haibin closed his mouth unwillingly, but the ruthlessness in his eyes revealed that this beam was over, and Li Guocheng felt inexplicable, this person is crazy.

In fact, Wei Haibin is now in a critical period, and he originally wanted to use this opportunity to go to the next level, but he didn't expect to be lost face by a little-known young man, he never thought that these were all self-inflicted.

Then Li Guocheng gave everyone a lesson on dynamic balance, and everyone talked about it, during which Zhao Gang and Du Gong asked the most questions, except for Wei Haibin, others also asked a few questions, and everyone was like a primary school student, taking out a pen and paper to record. They are all smart people, there is nothing to lose face, don't you see Wei Haibin secretly recording.

"Listening to your words is better than reading for ten years", Zhao Gang no longer treats Li Guocheng as a young man, and treats him as a peer in his attitude.

"Okay, lunch time has passed, let's eat first, and then fight in the afternoon", although Wang Peiyi doesn't know too much, but looking at the performance of other people, he feels that this matter is reliable, and he also sees hope to solve the problem.

Then everyone talked to each other and left the workshop.

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