"Mr. Yun, are you here?" As soon as I saw Yun Fei, the technicians and designers who were busy in the test workshop kept greeting Yun Fei.

In this workshop, whether it is a researcher who originally belonged to Jiuyi Heavy Industry or a graduate who has only been recruited from various universities for several years, they are all very familiar with Yunfei.

However, those college graduates who had just entered the Jiuyi Research Institute did not know that Lu Dao Yun Fei was not welcomed in this because of the salary and good benefits he gave to these researchers, but because he was originally born in the technical arts, and Yun Fei, who had a mechanical talent against the sky, personally used the technical skills to conquer these technical researchers with their eyes on the top of their heads.

If you have doubts, look for the boss.

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

It's just that now that the boss has more and more industries, he doesn't have much time to come to the research institute at all.

Yun Fei greeted the researchers with a smile as he walked towards the inside of the testing workshop.

With the launch of some of the company's heavy equipment numerical control research, the technical personnel who worked together entered the mechanical experiment workshop of the Jiuyi Research Institute, and the mechanical experiment workshop, which originally seemed extremely empty, became crowded at this time.

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

In the experimental workshop, each equipment occupies a small area, but some special supporting tool cabinets around the equipment being studied or fitter tables used to place some parts that need to be modified or waiting to be assembled parts occupy far more area than the equipment itself.

In addition, these devices are often disassembled and assembled, and it is difficult to deploy them if there is not enough open space around them.

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

After all, the whole factory is full of metal parts. If it is scattered on the ground and someone accidentally slips and falls, if the head is attached to these angular parts, it is likely that there will be a dead person.

The human head is far less hard than metal, a fact that has been demonstrated thousands of years ago.

"Xiao Deng, how's it going?" Together with Sun Lin, he went to the research area of gantry milling, which was isolated by colored striped cloth, and several technicians in dark blue overalls were inspecting the small gantry milling machine that was four meters long, two meters wide, and one meter eight high.

"Dr. Deng, how did you do this?" Yun Fei looked at the long flowing hair cut into a student's head with a look of surprise. There was a black grease stain on his face that was not very delicate, a typical mechanical assembler, where did he still look like a doctor!

Deng Lanqing ignored Yun Fei's strange eyes, nodded at him and turned his gaze to Sun Lin: "Old Sun, there is still a big problem with the movement of the column, and the gap between the guide rail below and the column is still not easy to adjust......" Deng Lanqing didn't expect that this would actually be a completely different thing from the theory.

Originally, she thought. With the mechanical major she has studied for ten years, to solve some mechanical problems, she can only understand it after working in Jiuyi Heavy Industry for almost half a year. The assembly of even the simplest component is very knowledgeable.

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

Originally, she thought that she would enter Jiuyi Heavy Industry. Even if you can't be in charge of a project, at least you have to be a design supervisor, but I didn't think about it. Sun Lin arranged her to practice on the front line of the test workshop!

She had already experienced countless internships when she was in college, and when she was in the school laboratory, many of the designed parts had to be equipped by herself, and she thought that even if the assembly experience could not be compared with those eight- and nine-level fitters, it was more than enough to compare with an ordinary skilled assembler.

But when she arrived at the experimental workshop, she was dumbfounded.

Most of the equipment in this workshop is 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 could only reluctantly start from scratch and learn the most basic things from these masters who were said to be mostly ninth-level fitters.

"Is the equipment up and running? Did you find any major problems during the move? For this doctoral student from Huaqing University, Sun Lin still likes it very much.

There are very few girls who learn machinery, let alone ten years of learning.

"There was a problem during the movement, the column was stuck when it went to the middle position, and the machine tool had ......an alarm," Deng Lanqing said to Sun Lin.

In the study of CNC gantry milling, Sun Lin wanted to quickly train the successor that Yun Fei recruited for him, so most of the work was handed over to Deng Lanqing to be in charge, and he only went out at a critical time.

"The column got stuck during the move?" Sun Lin's brows furrowed.

It stands to reason that such a problem should not occur at all, especially since the length of the guide rail of this gantry milling machine is only three meters and a half.

The guide rails under the two columns, the parallelism is only 0.03mm, which far exceeds the accuracy of the design, after all, most of the equipment used for testing is manually filed by senior fitters.

"Mr. Sun, this estimate is caused by the inconsistent instruction time obtained by the transmission motors on both sides, and the gap between the V-groove at the bottom of the column and the guide rail is not very small?" This is a very common problem.

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

"With such a large piece of equipment, the gap must not be too big, boss, please don't speak indiscriminately if you don't understand!" Deng Lanqing didn't expect that Yun Fei, the boss, would actually point fingers on the side.

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 the blind command of those who did not understand the state-owned enterprises or the national research institutes.

She didn't think that Yun Fei could know much professional mechanical knowledge, although Yun Fei was the boss of this company that produced machinery and equipment.

"Oh, Yun boy, are you sure?" When Sun Lin heard Yun Fei say this, his eyes were shining at Yun Fei.

"I'm not sure about this, let's take a look first. These heavy equipment, unlike our small number of cars and milling, the smaller the gap between key components, the better. Our two columns, including the beams and the spindle unit, weigh more than two tons. If the V-groove between the guide rail and the column is not well matched, 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.

As soon as she heard Yun Fei say this, Deng Lanqing immediately looked at Yun Fei with admiration.

These professional things can't be blindfolded indiscriminately.

"Old Sun, Hu Gong, they also suspect that this is the reason, but they are not sure, so they are still observing......" Although Deng Lanqing was curious about where Yun Fei learned this knowledge, he still agreed with Yun Fei's opinion.

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 will improve, what are you waiting for? Is it possible to observe the problem? Yun Fei said dissatisfiedly.

These large-scale equipment, not like small equipment, can produce several test machines at a time, the cost is too high, and because of the high price, the scope of use is not as wide as small general equipment, so when the production of test machines. It's just one produced.

If you produce two, if the design needs to be modified somewhere, maybe all of them will be scrapped!

For any product, the design is always modified in the continuous trial and test to get the final product. It will even be revised hundreds of times!

Theoretical arguments are correct is equipment. In practice, this is not necessarily true.

This is also what Sun Lin is thinking about, so that Deng Lanqing, the top student of Huaqing, will start from the most basic assembler! Of course, she, the assembler, is just an impostor. Her job is to hand the assemblers wrenches or screws or something, and then observe how the others assemble them. What difficulties will be encountered in the assembly process, and how will this difficulty be solved?

"Hu Gong, can you be sure what the problem is?" Sun Lin was directing the workers to operate the system while directing the column to move forward or backward. Hu Jun, the deputy chief engineer of Northern Heavy Industry who was sent to Rongcheng while staring closely at the connection between the column and the guide rail, asked.

"It's not certain right now, but it's a 70 percent chance it's a model out of sync between the two columns. Of course, there are some areas that need to be improved on the mechanical side. Mr. Yun, why do you have time to come here? Hu Jun, who was staring closely at the movement of the guide rail, replied to Sun Lin without raising his head.

The age gap between the two of them is not large, and when Sun Lin was still in the Machinery Academy before, they often discussed problems together, so they are very familiar.

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

"Don't doubt it, that's the problem, you look at the rail, here, here, and here, these traces are all caused by the column rubbing too hard against the guide rail when it is stuck......" Yun Fei walked to the side of the column, squatted down, ignored the oil stain on the rail, touched it, and found a few traces that could not be seen with the naked eye.

It stands to reason that such a simple question is impossible for the deputy chief engineer from North Heavy Industry to be ignorant of it.

But Yun Fei couldn't raise the questions in his heart, so he could only point out the traces and let them see for themselves.

"Sure enough, it seems that the surface roughness on this guide rail is not enough, and the hardness of the guide rail still needs to be improved......" touched the place pointed out by Yun Fei with his hand, and felt the slight resistance with his fingernails, Hu Jun immediately discovered the problem.

As for whether it is necessary to improve the surface roughness and increase the hardness of the guide rail, Yun Fei really does not know.

He is not a professional in these problems, and even he rarely knows about them.

In the past, the heat treatment he was exposed to was to treat the hardness of some mechanical parts to a range of HRC5-6, while in the machine tool industry, the hardness of some key parts or key parts was basically only the difference of HRC1.

If you don't understand something, don't interject indiscriminately.

This self-knowledge is still there.

"These mechanical problems are easy to solve, but the delay in signal transmission of the control system is not easy to solve, Situ, do you have any ideas?" Situ Heyun was originally taking a group of college graduates who had newly entered the Jiuyi Group to solve the problem of unstable control systems of some heavy-duty CNC vehicles in the heavy-duty CNC car area next to him.

"This is really difficult to solve, it is estimated that Tanalia on the other side of the system will come over to discuss the solution, after all, if two columns, with a motor drive, it is too difficult to achieve......" Situ Heyun really wants to make the X-axis workbench move left and right, but such a huge workbench itself weighs more than five tons, plus the weight of some heavy parts, if you want to drive more than ten tons of components, even if there is a rack and pinion transmission pair specially developed by Xin Kaixing for heavy-duty CNC equipment, it is difficult.

Over time, the rack and pinion under the table can wear out easily, which is not good for the accuracy of the equipment.

"Why don't you install a motor in the middle of the outside 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?" These old guys are limited in their thinking.

Always design and research according to the traditional or foreign framework, without other people's technology and experience, how can we produce good equipment that meets our own use?

China's CNC machine tools are far behind foreign countries, if you follow the experience of foreign countries, how many wrongful roads do you have to go, when can you catch up with foreign countries?

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

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

"Installing a floating hydraulic device under the column helps reduce the weight of the spindle unit!" Yun Fei said without thinking about it.

"Ahh How I didn't think of it! Ordinary heavy equipment will use hydraulic devices to reduce the gravity of moving parts, why do we have to redesign a new set of solutions when numerical control? As soon as Yun Fei finished speaking, Situ Heyun slapped his head suddenly.

"This plan is indeed very feasible, Xiao Deng, write down what Mr. Yun said, you will go and find Andri in a while, let's have a meeting to discuss, if this plan is feasible, start to modify the design today, such a plan should be able to be completed in a few days." Sun Lin commanded Deng Lanqing who was in a daze. (To be continued......)

PS: 10,000 words update, finally completed.

Hand pumped ......

Brothers, looking at the gourd so hard, smash more recommendation tickets, is it good to have a monthly ticket?

Of course, I want to reward the gourd of Shenma even more.

How many days have you seen this tip......