Intelligent Industrial Empire

Chapter 217 The key assembly technology of CNC milling machine (1)

"It's not your credit? Is it really the technology that the bastard Yun Fei acquired from abroad? He basically has nothing to do with foreigners. Where did he get these technologies?" Li Lu heard Sun Lin like this Said, I was really surprised.

Is it true that you were blinded by yourself from the beginning?This is not right!If it were really foreign technology, Yun Fei would not be upset when he first said this, and Ni Lishuang would not be like a cat with its tail tramped on.

"Could it be that the Soviets did this?" Like Yun Fei said, Li Lu did not believe that these engineers in various industries who had never been in touch with CNC were able to learn from them in just one year. Complete the production of samples from theoretical design to experimental improvement.If this is the case, the entire Soviet Union and China who have been engaged in CNC machine tools for a lifetime can meet Grandpa Mao.

"How do you say? Just the two CNC milling machines you are looking at. The research direction and some necessary parameters are all designed by Yun Fei. We and the Soviet engineers just combined his simple assembly design. In the refinement, many of the things are the improvement plan he proposed..." Sun Lin said this, feeling a little embarrassed, and kept touching his nose with his hands.

"He? How does he know the design of CNC machine tools?" Li Lu felt that she was fooled by the old man.This old man didn't know the benefit of accepting Yun Fei as a bastard, so he helped Yun Fei say good things and put gold on Yun Fei's face.

"Why can't he understand?" Ni Lishuang was unhappy when she heard that Li Lu, a woman who looked like a rival but didn't look like her, looked down on her omnipotent, and that Yun Fei brother who was wearing her underwear made him feel unhappy.

Li Lu was full of doubts at this time, and she didn't want Ni Lishuang to quarrel with the two. A young man under twenty years old actually knows how to design CNC than an academician of the National Academy of Sciences who has been doing research on CNC machine tools for decades. Machine tool, how is this possible?

"Guru..." When Li Lu wanted to ask Sun Lin what happened, the sound from her stomach made the other people remember the current time.

In the early summer, it would be almost eight o'clock in the evening in Rongcheng. Although it was still very bright outside, the watch on the wrist told everyone that it was past seven.

Li Lu still ate a little bit before getting on the plane. When she was in Rongcheng at noon, she faced a table full of dazzling dishes, because she was thinking about how to make Yunfei give full power to the entire Pearl River Delta. For Kamatt, where can I have an appetite to eat?

"Boss..." Guderian couldn't help being anxious when he saw Yunfei greet Sun Lin and the two beauties preparing to go to dinner. He just asked Yunfei the boss to see why during the assembly process, no matter what, this Both CNC milling machines have similar tapers on the Z axis. If this problem is not solved, the positioning accuracy of these CNC machine tools will at least have an error of more than ten threads during processing.

"Old Gu, do you want to solve this problem until tomorrow? Now we are not in a hurry for this moment. The first time we assemble a CNC milling machine, we mainly need to accumulate experience and lay the foundation for mass production after the machine tool is shaped... …" Yun Fei patted his head when he heard Guderian's words. In such a short period of time, Li Lu made him forget that Guderian had found him when he came to the CNC milling machine.

Li Lu only remembered at this time. The reason why he knew that Jiuyi Heavy Industry had started the production of prototype CNC milling machines was because the Soviet man ran to some of his people and asked Yunfei to help solve some problems...

"Xiaoyun, let's eat dinner later, you should help figure out how to solve the problem first, and solve the problem as soon as possible, and your CNC milling machine will be able to face the market one day sooner..." Li Lu teased. Said to Yun Fei.

It turned out that Guderian, a Soviet person, found Yu Yunfei and asked him to help solve the problem. She didn't care too much, nor did she think deeply.Now that Sun Lin, the old man he was familiar with, said this, Li Lu became curious. Could it be that Yun Fei had asked someone to say hello before and asked them to do this deliberately in front of him?I want to see what kind of magical abilities Yunfei has, especially looking forward to exposing Yunfei's conspiracy, so that he feels complacent. Li Lu feels that eating later will not be a problem at the moment.

Seeing the mocking on Li Lu's face, Yun Fei couldn't help being angry.

If the tiger doesn't show off his power, you really are a sick cat!You must be shocked, otherwise you really don't know the level of skilled workers in China!

At this moment, Yun Fei himself was hungry. After Ni Lishuang was discharged from the hospital, although the two did not live under the same roof, Ni Lishuang still developed the habit of eating on time for Yun Fei. It used to be after get off work at six every day. , Ni Lishuang will appear outside Yunfei's office with a steaming meal.I have been accustomed to the stomach that will fill up when I see it for several months, and now I can no longer resist as before.

Ni Lishuang never felt that going to work was more important than his brother Yunfei who served her.No matter what Yun Fei said, she would not listen, and she would drive off at 4:30 every afternoon and go home to cook.No one in the entire factory dared to say anything about her behavior, joking, if you offend the future proprietress, then don't get involved in Jiuyi Heavy Industries again.

For this, Yun Fei said Ni Lishuang once, but as soon as Yun Fei said, Ni Lishuang wiped his tears, and Yun Fei could only acquiesce in the end.

"Brother Yunfei, I will first go to the cafeteria to see if there is something to pad for you, and then I will go back to cook?" Ni Lishuang knew that Yunfei must be hungry right now, although everyone had lunch at four o'clock in the afternoon. The table dishes have not been moved much.

"You don't need to go back and do it, you can go to the cafeteria to see if there is anything ready, just get some..." Yun Fei said to Ni Lishuang.

At this moment, when Ni Lishuang goes back to make the meal, he will probably be hungry again when he comes back.

Man, it’s easy to change from frugality to luxury, but difficult to change from luxury to frugality!How long is this?Your stomach can't even bear such a bit of hunger?Enduring the faint uncomfortable feeling from his stomach, Yunfei walked towards the CNC milling machine where several workers were assembling the spindle.

"What's the specific problem?" Yun Fei turned around and asked Guderian after seeing how many people hadn't installed the spindle until now.

He didn't plan to ask these questions Sun Lin, who volunteered to be the on-site dispatcher.In terms of design or other aspects, Sun Lin is a great master, a master, and no one opposes it. But when it comes to on-site assembly, you may find a seven-level fitter, better than Sun Lin, an academician. Many.

Theory and practice are still very different.

"The main thing is the Z axis. When moving up and down, there will be a taper. No matter how we assemble or repair the guide rail, we can't eliminate that taper..." Hearing Yun Fei's question, Guderian was embarrassed. Replied.

This young boss has quite a thorough understanding of these technologies.Among other things, many of the tooling that can improve assembly efficiency and ensure assembly accuracy are designed by this young boss.

"First remove the spindle. The problem during the movement has not been solved. It is useless if you install the spindle!" Now that you know the problem, you must find the cause of the problem.

The Z-axis of the CNC milling machine mainly relies on the hydraulic system and the ball screw to connect the spindle head of hundreds of kilograms to the column. Otherwise, with a few screws on the guide rail, it is impossible to make the spindle head of hundreds of kilograms in itself. Fall down under gravity.

The three fitters quickly lifted the precision spindle with dozens of steps on it that could illuminate the shadow of a person.The two spindles produced by Jiuyi Heavy Industry have spent a lot of time and energy. A total of five pieces have been invested, and there are only two finished products!

"You put the dial indicator up and move the Z axis up and down, let me see..." Yun Fei said to the three assembly fitters who were waiting on the side from the Soviet Union.

After the fitter set up the dial indicator on the workbench, Yun Fei instructed the worker to slowly move the entire spindle head up and down manually, while silently counting the rotating position of the dial indicator pointer.

"Grandpa Sun, what is he doing?" When Li Lu saw Yun Fei staring at the thumb-sized watch intensively, she was puzzled. Could it be that just staring like this can solve the problems that the workers can't solve?

"This is to measure the verticality between the spindle and the worktable. At the beginning of the movement, the watch will set a position and move from top to bottom. If the watch does not move at all, it proves that it will not move during the entire movement. Errors occur. But this is just an ideal state. We designed the first batch of two testing machines. The spindle moves up and down by 500 millimeters. As long as the verticality is within one wire of five, it is considered qualified..." Sun Lin Li Lu introduced the first testing machine of Jiuyi Heavy Industry, while popularizing the basic knowledge of machine tools to Li Lu.

Li Lu couldn't help but slap her tongue when she heard Sun Lin's introduction.

The spindle head weighing several hundred kilograms moves more than 500 millimeters up and down, and the trajectory generated during the movement must be controlled within the range of one-sixth of the hair!

"Okay, there is no problem with the assembly above. Why don't you bother your mind? Since there is such a gap no matter how you assemble it, why don't you want to arrange the gap? Now the trajectory of the spindle head is three threads to the left. Five right? Put one side of the column up and tilt it three times to the right, and then you are measuring..." Yun Fei found out the problem and gave advice on how to deal with it.

Under the command of Yun Fei, the column of the entire machine tool was tilted three times five times, something more than two meters high, less than half a strand of hair, which was not visible to the naked eye at all, if it hadn’t been calculated in μ. Where can the dial indicator be measured?