Chapter 217

"It's not your credit? Is it really the technology that Yunfei bastard got from abroad? He basically has no intersection with foreigners. Where did he get these technologies? " Li Lu was really surprised to hear Sun Lin say so.

Are you really covered by yourself from the beginning? That's not right! If it was really foreign technology, Yun Fei would not be unhappy when he began to say this, and Ni Lishuang would not be like a cat with a trampled tail.

"Did the Soviets make this?" Just as Yun Fei said, Li Lu doesn't believe that these engineers in various industries who have not been in contact with CNC can complete the production of samples from theoretical design to experimental improvement in less than a year. If so, the entire Soviet Union and China, who have been engaged in CNC machine tools for a lifetime, can go to see Grandpa Mao.

"What do you say? The research direction and some necessary parameters of the two CNC milling machines you are looking at in front of you are designed by Yun Fei. We only refine his brief assembly design with those Soviet engineers, and many of them are the improvement plans he put forward... "Sun Lin said this, a little embarrassed, He kept touching his nose with his hand.

"He? How does he understand the design of CNC machine tools? " Li Lu felt that she must have been cheated by the old man. The old man didn't know what benefit he received from Yunfei, so he helped Yunfei speak well and put gold on Yunfei's face.

"Why can't he understand?" Ni Lishuang is not happy to hear that Li Lu, a woman who looks like a rival in love but doesn't behave very much, despises her omnipotent. Brother Yun Fei wears outside her underwear.

Li Lu was full of doubts at this time. She didn't want Ni Lishuang to quarrel at all. A young man under the age of 20 actually knew how to design CNC machine tools better than an academician of the National Academy of Sciences who had been engaged in CNC machine tool research for decades. How is this possible?

"Gulu..." when Li Lu wanted to ask Sun Lin what happened, the voice from her stomach reminded the others of the present time.

On the day of early summer, it will be dark at about eight o'clock in the evening in Chengdu. Although it is still very bright outside, the watch on the wrist clearly tells everyone that it is already past seven o'clock.

Before getting on the plane, Li Lu ate a little at random. When she was in Chengdu at noon, she was faced with a table full of dazzling dishes, because she was thinking about how to let Yun Fei give the sole agency of the whole Pearl River Delta to camart. Where would she have an appetite to eat?

"Boss..." when goodrian saw Yunfei greeting Sun Lin and two beautiful women to go to dinner, he was in a hurry. He just asked Yunfei to see why there were several taper on the z-axis of the two CNC milling machines during assembly. If this problem is not solved, these CNC machine tools will be processed, The positioning accuracy will at least have more than ten errors.

"Lao Gu, why don't you put this matter to tomorrow? We are not in a hurry now. The first time we assemble a CNC milling machine is mainly to accumulate experience and lay the foundation for mass production after the machine tool is finalized... "Yun Fei patted his head after hearing goodrian's words. For such a short time, Li Lu was so noisy that he forgot that goodrian had found himself to the CNC milling machine.

At this time, Li Lu also remembered that the reason why he knew that Jiuyi heavy industry had started the production of NC milling machine prototype just now was that the Soviet went to his several people to find Yunfei to help solve some problems

"Xiao Yun, I'll have dinner later. You'd better help find a way to solve the problem first. Solve the problems as soon as possible, and your CNC milling machine can face the market one day earlier..." Li Lu said to Yun Fei with a teasing face.

It turned out that goodrian, a Soviet, found Yu Yunfei and asked him to help solve the problem. She didn't care much or think deeply. Now Sun Lin, the old man he knew, said this, and Li Lu began to wonder whether Yun Fei had asked someone to say hello recently and asked them to do so deliberately in front of him? Want to see what kind of magical ability Yunfei has, especially looking forward to exposing Yunfei's bastard's plot and making him ashamed. Li Lu feels that there will be no problem eating later at the moment.

Yun Fei was angry when he saw the ridicule on Li Lu's face.

The tiger doesn't get angry. You really think you're a sick cat! You have to be shocked, or you really don't know the level of skilled workers in China!

At the moment, Yunfei was hungry. After Ni Lishuang was discharged from the hospital, although they didn't live under the same roof, Ni Lishuang still formed the habit of eating on time for Yunfei. In the past, as soon as it was time to get off work at six o'clock every day, Ni Lishuang would appear outside Yunfei's office with steaming rice and vegetables. I've been used to the stomach that will be filled when I see it for several months. Now I can't resist it as before.

Ni Lishuang never felt that working was more important than serving her brother Yunfei. No matter what Yun Fei says, she won't listen. She runs away at 4:30 every afternoon and goes home to cook. No one in the whole factory dares to say a word or joke about her behavior. If you offend the future landlady, don't mix in Jiuyi heavy industry in the future.

For this matter, Yunfei said Ni Lichuang once, but as soon as Yunfei said it, Ni Lichuang immediately wiped his tears, and Yunfei finally had to acquiesce.

"Brother Yunfei, I'll go to the canteen to see what cushions you have, and then I'll go back to cook?" Ni Lishuang knew that Yunfei must be hungry now. Although everyone had lunch at 4 p.m., he didn't move a table of dishes.

"Don't go back. Go to the canteen and see if there is anything ready-made. Just get some..." Yun Fei said to Ni Lishuang.

At this moment, when Ni Lishuang goes back and prepares the meal, he must be hungry again.

People, from thrift to extravagance, from extravagance to thrift! How long has it been? Your stomach can't even bear such a little hunger? Enduring the uncomfortable feeling from his stomach, Yunfei walked to the CNC milling machine where several workers were assembling the spindle.

"What's the problem?" Yunfei saw that several people had not installed the spindle up to now. He turned back and asked goodrian.

He doesn't intend to ask Sun Lin, who volunteered to be the on-site dispatcher. In terms of design or other aspects, Sun Lin is a magnate and a master, and no one has any objection. However, if you want to assemble this piece on site, you may find a level 7 fitter who knows more than Sun Lin, an academician.

There are still great differences between theory and practice.

"It's mainly the z-axis. When moving up and down, it will produce a taper. No matter how we assemble or repair the guide rail, we can't eliminate the taper..." Guderian replied shyly when he heard Yun Fei's question.

The young boss has a thorough understanding of these technologies. Besides, many of the tools that can improve assembly efficiency and ensure assembly accuracy are designed by the young boss.

"First remove the spindle, the problems in the moving process have not been solved, and it is useless for you to install the spindle!" Now that we know the problem, we must find the cause of the problem.

The z-axis of CNC milling machine mainly connects hundreds of kilograms of spindle head to the column by relying on the hydraulic system and ball screw rod. Otherwise, with several screws on the guide rail, it is impossible for hundreds of kilograms of spindle head to fall down under its own gravity.

The three fitters quickly lifted out the precision spindle with dozens of steps on it, which could reflect human shadow. 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 let the z-axis move up and down, let me see..." Yun Fei said to three assembly fitters from the Soviet Union.

After the fitter put the dial indicator on the workbench, Yun Fei told the workers to slowly move the whole spindle head up and down manually while silently counting the rotation position of the dial indicator pointer.

"Grandpa sun, what is he doing?" Li Lu was puzzled when she saw Yun Fei staring at the thumb size table. Could this stare solve the problems that these workers can't solve?

"This is to measure the verticality between the spindle and the workbench. At the beginning of the movement, the table will set a position and move from top to bottom. If the table does not move at all, it proves that there will be no error in the whole movement process. However, this is only an ideal state. For the first batch of two testing machines we designed, the spindle moves up and down 500 mm. As long as the perpendicularity is within a trace of five, it is qualified... "Sun Lin introduced the first testing machine of 91 heavy industry to Li Lu, and popularized the basic knowledge of machine tools to Li Lu.

Hearing Sun Lin's introduction, Li Lu couldn't help but smack her tongue.

The spindle head, which weighs hundreds of kilograms, moves up and down more than 500 mm. The trajectory generated during the movement must be controlled within the range of one sixth of the hair!

"Well, there's no problem with the upper assembly. Why don't you use your head? Since there is such a gap no matter how it is assembled, why not find a way to arrange the gap? Now the moving track of the spindle head is three wires and five to the left, right? Pad up one side of the column, tilt it to the right for three wires and five, and then you are measuring... "Yun Fei found out the problem and gave his treatment suggestions at the same time.

Under the command of Yun Fei, soon, the column of the whole machine tool tilted three wires and five, something more than two meters high. It tilted less than half a hair, which could not be seen by the naked eye. If it were not for μ Where can the calculated dial indicator be measured?