Siheyuan: Starting from a fitter

Chapter 53 Secret Mission ([-])

After a heated discussion, everyone unanimously decided to use the method of spot painting. In this way, the process is the simplest and the impact on the motor is the least. At the same time, spare parts for replacing the bearings are prepared.Then they gathered around Li Guocheng.

"How's it going? Xiao Li", Zhao Gang asked in advance.

"Limited by the conditions, I came up with a simple test tool, which is to make a vibration sensing strip with a length of 10 centimeters. From your perspective, it looks like an antenna. The bottom is directly placed on the rotating shaft. As long as the sensing strip is kept at the center of the rotating shaft , based on the vibration amplitude of the induction strip, you can test whether the rotor is in a state of dynamic balance. At the same time, make a thin induction wire of the same length and clamp it directly on the casing. According to the shaking amplitude of the induction wire, you can also judge the stability of the motor." .

Li Guocheng was also helpless. Later generations of dynamic balancing machines required microcomputer control and calculation, which could accurately test the angle and approximate position of the imbalance, and calculate the adjustment weight. However, there is no such machine now, so we can only make do with it.

On such an occasion, Li Guocheng didn't dare to rely on his own thoughts to adjust, otherwise the best result would be to become a tool for dynamic balance adjustment. Thinking about such a day, he would be afraid.

"It's also a way, you can try it," Zhao Gang said.

"Then I will divide the work. Master Du and Xiao Li are responsible for making the sensor strip device. We will put a thin layer of paint on the sunken areas and wait for the paint to dry naturally. Then we will see the effect together." In this small team , a leader appeared faintly, but it was not clear, but everyone knew that Zhao Gang was an engineer in a certain research institute, and they were just senior fitters. Although they felt similar in status, there was still a gap in level after all.

"I cooperate with Du Gong," Li Guocheng quickly expressed his stance. Du Gong smiled and said nothing.

Next, they are divided into two groups, one group repairs the defects, and the other group manufactures the sensing device.

The modification team argued again about which tool to use for painting.

Li Guocheng followed Du Gong to find Xiao Ma and asked for materials and tools. After a while, Xiao Ma took him to the workroom next door. All kinds of fitter tools were available, and some steel bars were placed on the workbench.

Du Gong arranged for Li Guocheng to process the induction strip and induction wire. Du Gong was responsible for manufacturing the base of the induction strip and the clamp of the induction wire.

Li Guocheng took out an iron rod and ground it into a needle, and began processing strips and silk.First, use a large file to file the strip into a "long needle" with a big end and a small end. To outsiders, the movement looks like a mallet. Not to mention the measurement, the movement is still so rough, but if you look closely, you will find that each Each file is at an angle, and the shape of a long needle gradually appears, with a uniform surface and no obvious steps.

After observing that the rough machining was almost done, I changed to a fine file and carefully polished it with precision, but to outsiders it still looked like a stick.

Then change to finer sandpaper and polish slowly.

After an hour of procrastinating, put the finished product on the workbench.At this time, Du Gong's work is coming to an end. After all, the base and the fixture are child's play for advanced fitters. The main work is repeated calibration and measurement.

When Du Gong heard that Li Guocheng had completed the work, his first reaction was that it was impossible. He also thought about whether it was a fool's errand, but after thinking about it, he felt that it shouldn't be done. It seems that Xiao Li is not an outrageous person.

Du Gong put the "big needle" on the table, picked up the right-angled steel ruler, and leaned it against the big needle with the right-angled edge. He found that there was no gap at all. He then rotated the steel ruler on the axis while observing. There was also no gap. This is Perfect processing.Even more incredible is the time, too short.They usually make such workpieces and need to measure and process them at the same time, which takes more than half a day, and they don't have such high precision.

After changing the "fine needle" measurement, Du Gong looked at Li Guocheng with the same result as a monster and didn't know what to say.

Li Guocheng also wanted to show off his fitter skills so that everyone would not look down upon him.But what he didn't expect was that the force would become stronger.

"Your skills are indeed suitable for fitters," Du Gong said with emotion.

The next step was welding. Du Gong wanted to continue to see Li Guocheng's welding skills, so he gave up his position to Li Guocheng.Li Guocheng did not back down, and used two right-angle steel rulers to complete the basic positioning. First, spot welded a point, and then re-positioned. With the help of his thoughts, Li Guocheng completed the welding work smoothly.

Du Gong also picked up two right-angle steel rulers and measured them at various angles. He found that he could not find any areas that needed adjustment. He secretly admired Li Guocheng's welding skills and his stable operation throughout the process, and sighed that the young man was too aggressive.

Because the paint needs to be completely dry before experimenting, we chose to air-dry it naturally, for fear that heating would affect other parameters.

That night, the Security Department of the Ministry of Mechanical and Electrical Engineering received an anonymous letter reporting that Li Guocheng was an enemy agent. The evidence was that it was impossible for him to know the theory of dynamic balance at his age in China. material.

In an internal meeting attended by Wang Peiyi, after listening to Wang Peiyi's opinions, he decided to visit secretly, monitor Li Guocheng's movements, and refrain from arrest for the time being.That night, several groups went to courtyards, factories, and the junior high school where Li Guocheng studied to secretly visit.

The next morning, everyone gathered together. There was nothing serious to do, so they carefully observed every detail of the motor.In the afternoon, assembly began. Du Gong did it himself. After the motor was assembled, he carefully installed the induction strip and induction wire, and used instruments to ensure that the induction strip was on the axis of the rotating shaft.

Then we turned it on and observed it, and found that the vibration had indeed become a little smaller, which gave everyone more confidence.

From then on, everyone kept trying. At first, the progress was obvious. Later, it was sometimes good and sometimes bad. Finally, Li Guocheng used his mind power to assist and clicked several times with his own hands. Finally, half a month later, in addition to the induction wire, there was a slight shaking. The sensor bar can no longer see any shaking with the naked eye.

I removed the sensor strip and wire and tried the noise, and surprisingly it reached 28 decibels.

The next two days will be a summary meeting and a commendation meeting.The summary is to set up the assembly process step by step and process based on the assembly experiments at this stage, and summarize the manufacturing process and requirements of the induction strip and induction wire into a volume.Later, everyone felt that the names of induction strip and induction wire were too crude, so they were changed to axis balance ruler and longitudinal stability ruler respectively.

Because the wind has risen, recognition is mainly verbal praise and an enamel water glass.

At the end of the meeting, everyone cherished each other and went home or returned to work happily. Li Guocheng was kept by Wang Peiyi on the grounds that he had something to do. Everyone didn't care, only Wei Haibin was ecstatic.

A confused Li Guocheng was taken to a room with a meeting room, where a middle-aged man and a young man were sitting. After Wang Peiyi arrived, he did not enter the room or explain anything. He closed the door and left.

Li Guocheng immediately released his telekinesis. There was nothing unusual around him. He saw Deputy Director Li in an office on the second floor, talking anxiously to a middle-aged man.

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(End of this chapter)