Intelligent Industrial Empire

"President Yun, are you here?" When I saw Yunfei, the busy technicians and designers in the test workshop kept greeting Yunfei.

In this workshop, whether it is the researchers who originally belonged to Jiuyi Heavy Industry, or the graduates recruited from various universities in a few years, they are very familiar with Yunfei.

However, those university graduates who have just entered the September 1st Research Institute don’t know that Yun Fei’s popularity here is not because of his salary and good welfare for these researchers, but because he is a technical background and has a natural talent for machinery. Yunfei used his own technology to conquer these technical researchers with eyes on the top of his head.

If in doubt, find the boss.

This is what the old employees in the mechanical test workshop know.

However, now that the boss has more and more industries, he doesn't have much time to come to the research institute.

Yun Fei smiled and greeted these researchers while walking towards the inside of the experimental workshop.

With the start of the company's research on the numerical control of some heavy equipment, various technical personnel working together entered the mechanical experimental workshop of the Jiuyi Research Institute. The mechanical experimental workshop, which was originally extremely empty, has now become crowded.

In a workshop of thousands of square meters, seven or eight sets of various types of heavy equipment occupy half of the area.

In the experimental workshop, each piece of equipment occupies a small area, but some special tool cabinets surrounding the equipment under study are used to place some parts that need to be modified or waiting to be assembled. The area occupied Far more than the area occupied by the device itself.

Moreover, these devices are often disassembled and assembled, and if there is not enough open area around, it will be difficult to deploy them.

Whether it is in the Jiuyi Heavy Industry or the mechanical experimental workshop, there are clear regulations that no parts or tools can be placed directly on the ground.

After all, there are some metal parts all over the factory. If they are scattered on the ground and someone accidentally slips and falls, if their heads are mounted on these angular parts, it is very likely that people will die.

Human heads are far less hard than metal, which is a fact that has been demonstrated thousands of years ago.

"Xiao Deng, how's it going?" Together with Sun Lin, we went to the research area of ​​gantry milling separated by colored strips. Several technicians in dark blue overalls were surrounding the table which was four meters long and two meters wide. , A small gantry mill with a height of one meter eight for inspection.

"Dr. Deng, how did you make it like this?" Yun Fei looked astonished as he cut a long flowing hair into a student's head. There was a black greasy stain on his originally not pretty face, a typical mechanical fitter. , There is no such thing as a doctor!

Deng Lanqing ignored Yun Fei’s strange eyes, and after nodding at him, she turned her gaze to Sun Lin: “Lao Sun, there is still a big problem with the movement of the column. The problem with the gap between the lower guide rail and the column is still It's not easy to adjust..." Deng Lanqing didn't expect that when he actually started, it was completely different from theory.

Originally, she thought that with the mechanics she had studied for ten years, she needed to solve some mechanical problems, but it took nearly half a year to understand that even the simplest assembly of parts It is very knowledgeable.

If you want to engage in design, you must have a wealth of practical experience.

Originally, she thought that even if she entered Jiuyi Heavy Industry, even if she could not be in charge of a project, she had to be a design supervisor at least, but she did not expect that Sun Lin would arrange her for an internship in the test workshop!

She has already experienced countless internships when she was in university, and when she was in the school laboratory, many of the designed parts had to be equipped by herself. She believed that even though the assembly experience could not match those of the eighth or nineth level of equipment. It is more than enough to compare a fitter to an ordinary skilled assembler.

But when she got to the experimental workshop, she was dumbfounded.

Most of the equipment placed in this workshop was beyond her imagination.

There are not many small equipment produced in the production workshop of Jiuyi Heavy Industry that they visited when they joined the company.

Therefore, she had no choice but to learn the most basic things from these masters, who were said to be mostly Grade 9 fitters.

"Is the equipment running? Did you find any major problems during the movement?" Sun Lin still likes this doctoral student from Huaqing University very much.

There are very few girls learning machinery, let alone learning for ten years.

"There was a problem during the movement. The column got stuck when it reached the middle position, and the machine tool alarmed..." Deng Lanqing said to Sun Lin.

In the study of CNC gantry milling, Sun Lin wanted to quickly train the successor whom Yunfei had recruited for him, so Deng Lanqing was responsible for most of the work, and he only took the lead when it was critical.

"The column was stuck to death during the movement?" Sun Lin frowned.

It stands to reason that such a problem shouldn't occur at all, especially since the rail length of this gantry mill is only 3.5 meters.

The guide rails under the two columns have a parallelism of only 0.03mm, which far exceeds the accuracy of the design. After all, most of the equipment used in the test is repaired by hand by a senior fitter.

"Lao Sun, this estimate is caused by the inconsistency of the command time received by the drive motors on both sides. Is the gap between the V-groove at the bottom of the column and the guide rail very small?" This is a very common problem.

At least, it is very common in Yun Fei's eyes.

"For such a large equipment, the gap must not be too big, boss, please don't speak indiscriminately if you don't understand it!" Deng Lanqing did not expect that the boss, Yun Fei, would be gesticulating.

Part of the reason why she chose the technology development department of a private company, the Jiuyi Research Institute, was that she was a little annoyed by people in state-owned enterprises or national research institutes who did not understand.

She doesn't think Yunfei can understand much professional mechanical knowledge, although Yunfei is the boss of this company that produces mechanical equipment.

"Oh, kid Yun, are you sure?" Sun Lin stared at Yun Fei with bright eyes when he heard Yun Fei say this.

"I'm not sure about this. Let's take a look at it first. These heavy equipment, unlike our small digital car and digital milling machines, the smaller the gap between the key components, the better. Our two columns plus the beam and the spindle unit , The weight is more than two tons, if the V-groove between the guide rail and the column does not fit well, just its own gravity may make it difficult for the spindle to move... "Although Sun Lin is a mechanical expert, he is not an expert in machine windows.

Upon hearing Yun Fei's words, Deng Lanqing immediately looked at Yun Fei with admiration.

These professional things can't be concealed in a random manner.

"Lao Sun, Gong Hu, they also suspected this, but they are not sure, so they are still observing..." Although Deng Lanqing was curious about where Yun Fei learned the knowledge, he still agreed with Yun Fei's point of view. .

This can be regarded as an indirect compliment to Yun Fei.

Fortunately, she is not a jealous woman.

"If you suspect that this is the reason, you can improve it. What are you waiting for? Can you observe the problem through observation?" Yun Fei said dissatisfied.

These large-scale equipment, unlike small equipment, can produce several test machines at a time. This cost is too high, and because of the high price, the scope of use is not as extensive as small general-purpose equipment. Therefore, when the test machine is produced, it is only One was produced.

If two units are produced, in case the design of a certain place needs to be modified, maybe all of them will be scrapped!

For any product, the final product can only be obtained by constantly modifying the design in continuous experimentation.It will even be modified hundreds of times!

The correct theoretical argument is equipment, but it is not necessarily correct in practice.

This is why Sun Lin made Deng Lanqing, a top student of Huaqing, start from the most basic assembler!Of course, her assembler is just a fake.Her job is just to pass wrenches or screws to the assembly masters, and then observe how others assemble, what difficulties will be encountered in the assembly process, and how to solve this difficulty.

"Hu Gong, can you be sure of which aspect of the problem?" Sun Lin is instructing the workers to operate the system to keep the column moving forward or backward, while staring at the connection between the column and the guide rail, and is dispatched by Northern Heavy Industry. Asked Hu Jun, the deputy chief engineer of Rongcheng.

"It's not certain now, but there is a 70% chance that the models between the two columns are not synchronized. Of course, there are some areas that need to be improved in the mechanical aspect. Yun, why are you free to come here?" Hu Jun, who was staring at the movement of the rails, answered Sun Lin without lifting his head.

The age difference between the two of them is not big, and Sun Lin used to discuss issues together when he was still in the Academy of Mechanical Engineering, so they were very familiar.

But he really didn't expect that Yun Fei would appear in this test workshop.

"No need to doubt, that's the problem. Look at the top of the rail, here, here, and here. These traces are caused by the friction between the column and the rail when it gets stuck..." Yun Fei walked to the column. , Crouched down, ignored the oil stains on the rails, touched it, and found a few traces that were invisible to the naked eye.

It stands to reason that such a simple question, the deputy chief engineer from Northern Heavy Industry could not be ignorant.

But Yun Fei is not good at raising the questions in his mind, he can only point out the traces and let them see for themselves.

"Sure enough, it seems that the surface roughness on the rail is not enough, and the hardness of the rail has to be improved..." I touched the spot where Yunfei pointed out with my hand, and felt a little resistance with his fingernail. Hu Jun Suddenly found the problem.

Yunfei really doesn't know whether it is necessary to improve the surface roughness and increase the hardness of the guide rail.

These problems, he is not professional, even he rarely knows.

In the past, the heat treatment he touched was to process the hardness of some mechanical parts to a range of HRC5-6. In the machine tool industry, the hardness of some key parts or key parts is basically only HRC1.

Don't just interrupt if you don't understand.

This self-knowledge is still there.

"These mechanical problems are easy to solve, but the problem of the delay in the signal transmission of the control system is not easy to solve, Situ, do you have any ideas?" Situ Heyun was originally bringing a bunch of new into the nine. A group of college graduates solved some instability problems in the heavy-duty CNC car area next to them. Seeing that Yunfei had directly entered the gantry milling area, they came with a student apprentice.

"This is really difficult to solve. I guess Tanaliya from the system will come over to discuss the solution. After all, if the two columns are driven by a motor, it will be too difficult to achieve..." Situ Heyun is very I want to move the X-axis workbench to the left and right, but the weight of such a huge workbench is more than five tons, plus the weight of some heavy parts. If you want to drive parts weighing more than ten tons, even if it has a special The rack and pinion transmission pairs developed by heavy-duty CNC equipment are very difficult.

Over time, the rack and pinion under the worktable are easily worn out, which is not good for the accuracy of the equipment.

"Why not install a motor in the middle of the workbench, and then use a spindle to drive the guide rails on both sides of the workbench to move at the same time?" The thinking of these old guys is limited.

If you always design and research in accordance with the traditional or given foreign framework, without others' technology and experience, how can you produce good equipment that suits your use?

China's CNC machine tools are already far behind foreign countries. If we follow the experience of foreign countries, how many wrongdoings we have to go and when will we be able to catch up with foreign countries?

"Xiaoyun, we have also considered this. Our DC servo motors have insufficient power, and large foreign DC servo motors will not be exported to us..." Situ Heyun said embarrassedly.

The DC servo motor he designed can't drive the multi-ton spindle unit to move stably for a long time or stop suddenly.

"Add a floating hydraulic device under the column to help reduce the weight of the spindle unit!" Yun Fei said without thinking.

"Ah! Why didn't I expect it! Ordinary heavy equipment will use hydraulic devices to reduce the gravity of moving parts. Why do we have to redesign a set of new solutions when we are numerically controlled?" Yun Fei finished speaking, Situ He Yun suddenly Slap forehead.

"This plan does have great feasibility, Xiao Deng, write down what Mr. Yun said, and you will find Andri for a while. Let's have a meeting to discuss it. If we prove that this plan is feasible, we will start today. Modify the design. Such a plan should be done in a few days." Sun Lin ordered Deng Lanqing in a daze.