Chapter 19: Appraisal

The laboratory of course has a high-precision analytical balance and a high-precision torque measuring instrument. After Guo Tailai's one-day calibration, the weight of milligrams can be easily and accurately corrected with a single hand, and the accuracy of the torque measurement is also calibrated to o. Oo cow rice.
Next, Liu Lao gave Guo Tai the opportunity to determine the center of gravity and dynamic balance of the workpiece. Whether it is equipped with a gyroscope or a high-precision machine tool, both are extremely important and the least easy to master.
However, Liu Lao still underestimated the degree of enchantment of Guo Tailai. When the guy's hands can tell the difference in the weight of milligrams, plus his powerful ability to calculate, and any regular workpiece on his hand, he can almost instantly determine the center of gravity.
The essence of dynamic balance is high precision and symmetry. The other is the weight balance in all directions. The center of gravity should fall perfectly on the center of gravity of the shaft without causing vibration. In this regard, after Liu Lao pointed a few times, Guo Tailai took the practice of the workpiece, and solved the problem very easily, so that Liu Lao’s stunned and satisfied, but also satisfied.
What are the reasons for this?
Although Liu Lao did not say that he wanted to accept Guo Tailai as a disciple, Guo Tailai did not say that he would like to worship Liu Lao as a teacher, but in the hearts of two people, this relationship has been completely settled. Although Guo Tailai sometimes speaks big and not small, but for Liu Lao, he really is treated as a master.

Try to do a set of artifacts yourself to achieve dynamic balance.
Liu Lao gave Guo Tailai an assignment, or an assessment:
When you make it, I can nod and you can not learn.

This is Liu Lao’s graduation exam, and Guo Tailai’s unusual attention. What kind of things can I do to meet Liu’s assessment requirements?
The first time, Guo Tailai thought of Zhao Wei's gyroscope. However, it is obvious that the highly confidential design of the gyroscope is impossible for Liu Lao, and it is impossible to do it in the fitter workshop. ..
Guo Tailai immediately thought of a fun thing from the gyroscope, the fingertip top.
In the dream of the future, Guo Tailai saw a scene in which a fingertip gyro made in Japan was stopped after 24 minutes of crazy rotation.
The fingertip gyro created the Guinness World Record with a continuous rotation time of 24 minutes and 4.34 seconds. The Japanese company inebe itsui provides gyro bearings, rims and precision nuts, while Mitsubishi Precision is responsible for design, assembly and testing. Founded in 1995, inebea itsui is a manufacturer of miniature ball bearings and holds the world's highest share in the field of miniature precision ball bearings. This Guinness-certified precision "toy" is worth 45o US dollars. The value behind it is the accumulation of long-term precision manufacturing technology.
It cannot be said that Japan in the future has a strong technical advantage in high-precision bearings. But now, Guo Tailai also wants to challenge himself.
The design scheme Guo Tailai has in mind, and the only two obstacles to achieving it are materials and processing. In this aspect of the material, Guo Tailai has no good idea for the time being. He can only turn to Zhao Wei.
"Liu Lao's test of the teacher?" After listening to Guo Tailai's intentions, Zhao Wei was also aroused: "Need to wear high-hardness steel with uniform wear resistance. When the finished product is finished, you need a clean clean room?"
Guo Tailai nodded.

What are you going to do?
Zhao Wei asked with great interest:
Talk about it?

"Or don't say it first, you will know when I make it." Guo Tailai sold a piece: "In short, it is related to your gyroscope production, and will never let you down."
"Good!" Zhao Yiyi listened to the following sentence related to his own gyroscope, and then nodded immediately, "I can solve the clean room, high-hardness steel with uniform wear resistance, you better find Professor Wang, he There is a machining center over there, and the material grade is very high. I don't have to go around the bend to find someone else."
Guo Tai came to a glimpse, and then slammed his own brain. I still have a master's tutor, who is not looking for him? And it’s good for Professor Wang, isn’t it?
Professor Wang is better at speaking here. He heard Guo Tailai’s request and dialed two kilograms of special bearing steel for him. This is a high-precision machining center bearing, which is absolutely in line with Guo Tailai's needs.
Guo Tailai first planted a rough embryo of several parts at the school's factory, and then packaged it with the tools in Liu Lao's studio, and brought it to a dust-free studio that Zhao Wei specially set up in the laboratory.
Everyone can see that the fat man is serious. In the past, the fat man did the crankshaft, and the turbine blades were good. Most of them were made with a pair of ordinary labor gloves. But this time, Guo Tailai was wearing rubber gloves and wearing a specially designed dust-free operation suit. Mask operation. And it is required to clean the environment without dust, is it afraid that dust will affect the accuracy?
The fat man is in the dust-free studio, staying for three days. No one outside can enter, only through the window of the door, watching the fat man sweat on the console. You know, even the complicated turbine blades, the fat man is only fixed within 12 hours of the night, but the things he processed this time, actually connected for three days.
What is even more frightening is that the fat man has to rest for ten minutes every half hour, especially after each operation, he must blow away every processing residue from the top with a blower ball, and he is really serious.
Zhao Wei’s rare did not give the fat man a face, but took the initiative to take on the logistics of the fat man. Every day at the meal, he would give the fat man a well-prepared meal from the hotel outside the school. At night, there is still a late night, and the thoughtful people can’t Confidence.
Guo Tailai did not have to work day and night, but fully guaranteed his rest time. At the first night, he would take the initiative to go to the lounge next to the clean room. With the help of nano-robots, fat people can go into deep sleep every day and have a complete rest.
The unfinished workpiece, the fat man will be carefully locked in the box at the bottom of the fine velvet, and even move carefully. Zhao Wei and others, despite their curiosity, can see that the fat man is so cautious, and they are all resistant to the temper.
It took a day and a half to process, but the next assembly took a day and a half. The fat people who can use the hand-installed places all use their own hands, can not use the hands, but also use silicone tweezers instead of metal tweezers, to ensure that there will be no slight imbalance due to friction.
"Sister, when you can demonstrate the day, if you can call the Guinness World Records notary public." Before the night of sleep, Guo Tailai and Zhao Wei had a mouthful, because the Japanese are doing this in the future.
"I am going to organize." Guo Tailai did not expect Zhao Wei to agree to it: "I would like to see what kind of surprise you will bring me."
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