Siheyuan: Craftsmen of a Great Country

Ten minutes passed in a blink of an eye.

At Luo Xue's prompt, everyone returned to the table and continued the meeting.

Jiang Chen said: "Everyone, are there any problems with your respective workstations?"

Everyone shook their heads.

With Yang Weimin taking the lead and Li Guangfu working hard, of course there won't be any big problems.

Jiang Chen said: "Okay, since there are no problems, let's start the first seminar meeting of our machine tool research and development project team now."

"Since it is a seminar, I hope everyone will actively express their opinions, so that we can combine everyone's strengths and create high-quality machine tools."

"Now I want to ask everyone, what do you think is the most important part of a machine tool?"

This is an open question with no standard answer.

The reason why I ask this is just to guide everyone into Jiang Chen's rhythm.

Everyone looked at each other and lowered their heads to think about it.

Among this group of people, probably only Ge Langping, the furnace worker, didn't know much about machine tools.

Others, including electricians, have been exposed to machine tools.

After a while, Liu Xi broke the silence first: "I think the spindle is the most important component of a machine tool. It has a decisive impact on processing efficiency, accuracy, etc."

"Like the small machine tools we use, the spindle is not very good. It takes more effort to meet the accuracy requirements."

If someone takes the initiative, the rest will be easy to handle.

Wang An said: "I think the most critical component of a machine tool is the tool system. It can also directly affect the processing efficiency and accuracy. Once the tool system is damaged, it almost means that the machine tool has lost its function."

Others also spoke.

Their statement is roughly the same as that of these two people.

Only one person said that the guide rail is very important because it is related to the stability of the machine tool, directly related to the service life and processing accuracy of the machine tool.

Most of the people spoke, and for those who did not speak, Jiang Chen began to call names: "Liu Yue, tell me what do you think is the most important thing about a machine tool?"

Liu Yue, who was concentrating on enjoying Jiang Chen's performance, was stunned for a moment, and then said: "It has only been more than a month since I came into contact with machine tools, and I don't know much about machine tools."

"But I think the components of the machine tool are all very important. Any component will affect our operation and production processing."

She didn't answer Jiang Chen's question directly, which was a little clever.

Jiang Chen smiled but didn't say anything. He turned to Qin Kai and asked, "Comrade Qin Kai, you are the only engineer among the people sitting here who has participated in machine tool research."

"I want to hear your answer."

Qin Kai said dullly: "I agree with Liu Yue's point just now. The machine tool is a whole, and every part is important."

"But if I have to choose a more important component, I would choose the transmission system in the main body, because it is the power source of the machine tool. It is not only related to production accuracy and efficiency, energy conversion efficiency, but also to our use and control. feel."

Jiang Chen nodded: "Everyone has expressed their opinions, which is good. It would be better if everyone can be more active in future discussions."

"Comrade Qin Kai just mentioned the transmission system. I don't care whether it is the most important, but it is definitely the first."

"Because the choice of transmission mode will directly affect the structure and layout of the machine tool."

"So, our first topic today is to discuss the most reasonable transmission method for the machine tool we are going to develop."

Today's machine tools mainly have four major transmission methods.

Mechanical transmission, hydraulic transmission, electrical transmission, pneumatic transmission.

Of course, there is also a combined transmission that combines multiple transmission methods.

Among them, the first two are more common and used more.

As a result, everyone had big differences on this first topic.

One faction is dominated by Wang Xi and Sun Changan, who firmly support mechanical transmission.

Mechanical transmission is the transmission of power from one component to another through mechanical components. This original component includes gears, belts, chains, etc.

Their reasons for supporting mechanical transmission are: simple structure, high transmission efficiency, and high transmission accuracy.

Hydraulic transmission inevitably has leaks, low transmission efficiency, and is not suitable for long-distance transmission. Moreover, the use of hydraulic transmission will encounter difficulties under conditions such as high temperature and shading.

Moreover, it is difficult to maintain, and it is difficult to check if a malfunction occurs.

The other faction is dominated by Liu An and Qin Kai, who support hydraulic transmission.

The reason is: the output power per unit weight and output power per unit size of hydraulic transmission are the best, and the device is small in size, light in weight, small in inertia, compact in structure, and flexible in layout.

The action is fast, the control and adjustment are relatively simple, and the operation is convenient and labor-saving.

Another reason why Qin Kai firmly supports this method is that hydraulic transmission can be easily combined with new technologies to achieve digitalization.

The two factions argued endlessly and heatedly.

Jiang Chen knocked on the table: "Well, the atmosphere is right. When discussing issues, you should argue with reason and stick to your own point of view."

"But I want to remind everyone that the machine tools we will develop will be mainly used in steel rolling mills, which include functions such as processing threaded gears."

As soon as these words came out, Qin Kai was stunned for a long time, and then slowly said: "Okay, I was wrong."

Liu An was stunned: "What's wrong? Isn't hydraulic transmission very good? And you also said that automation can be realized in the future, which will save more effort."

Qin Kai slowly forced out a sentence: "Hydraulic transmission must not have a strict transmission ratio, so it cannot be used in the inline transmission chain of machine tools such as threaded gears."

Liu An was dumbfounded and argued for a long time, but it turned out that it couldn't be used at all.

Jiang Chen nodded: "So, now the only option is mechanical transmission."

He was a little disappointed with Qin Kai.

It is understandable that workers only know the advantages and disadvantages of hydraulic transmission and mechanical transmission surfaces, but do not know the taboos involved.

But as an expert who specializes in machine tools, Qin Kai only thought of this after being reminded by him. How could such a person do research?

It seems that from now on, just treat him as a little transparent.

Hydraulic transmission and gas-hydraulic linkage (electrical + hydraulic) methods are the basis for digitalization and automation. Jiang Chen will definitely use these two linkage methods in subsequent research.

But the first batch of machine tools were studied for steel rolling mills, and neither method was suitable.

Only the mechanical transmission method based on gear transmission is the most reasonable.

Although its cost is higher.

After determining the linkage method, the next step is to discuss other components.

There is no controversy about general components. Just make appropriate improvements by referring to existing machine tools.

However, there are differences in the selection of machine tool tools.

Currently, the knives that flower growers can produce are composite alumina blades, which are usable but not advanced enough.

Qin Kai feels that since he wants to produce good machine tools, he must use the best cutting tools.

He advocates importing internationally advanced props.

But most other people feel that since they are developing their own machine tools, they should use their own cutting tools.

Jiang Chen did not comment on this.

Whether he uses his own less advanced knives or imported knives, it is not his original intention.

If it were not difficult to achieve high temperature and high pressure environment, he could even make cubic boron nitride cutting tools.

However, he currently cannot spare the time to engage in this research, and it will not be until next year at the earliest.

So the final decision was that advanced cutting tools were expensive and difficult to import, so we would use domestically produced cutting tools for the time being.

Anyway, the tool is easy to replace and can be replaced at any time later.

After the various parts are roughly determined, all that remains is to use a shell to house these parts.

For a whole day, a rough layout of the machine tool has been discussed, and the next step is to research, experiment, improve, adjust, and finalize component by component.

These are the difficulties in the appearance of machine tools.

Any mistakes will lead to a decline in the overall performance of the machine tool.

However, with Jiang Chen's bug-like existence, he would naturally not allow this situation to occur.

They can be allowed to take detours during the development process, but there must be no mistakes in the final product.