543, new invention, screw nut【1/3】

Meow! Thirty-two transformations to learn from cats and be cute and ask for ***!

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The Huang family set up two large tables and served food separately.

Huang Chengyan, Huang Yueying, Sun Yu, and Hua Tuo sat at a table, Zhuge Liang, Xiao Pang Tong, Xiao Xu Shu sat at another table with Sima Hui and others who had just run out of the backyard. The Jingzhou Loli Legion finally reunited again, and the little loli's happy laughter floated over from the side from time to time.

Huang Chengyan and Huang Yueying have decided to join the Gongsun family, so the family doesn't have to stay any longer. They took out all the good things in the house, and it seems that they planned to pat their butts and leave after the meal. Anyway, the family is barely covered, and there is nothing worth taking away except the weird furniture designed by Huang Yueying.

After the initial awkwardness passed, everyone had some food and the atmosphere on the table gradually improved.

Sun Yu couldn't help but speak to Huang Yueying, "Miss Huang, what are you doing with these strange gear sets?"

Huang Yueying smiled slightly and said, "Last time, Mr. Xunzhen taught me gears. The more I thought about it, the more I felt that it was widely used, because I tried to install everything around me on the gear set. I also knew that some things were not suitable for installing this thing, but it was always good to try more."

Sun Yu nodded. He was engaged in scientific research and invention in later generations. Of course, he knew the importance of experiments. When a new device is invented, it is necessary to test its practicality in various fields. This is a step that scientific workers must take.

For example, there was a novel website called ***.com in later generations. If the authors there thought of a superpower for the protagonist, that is, golden finger, they should think about what the protagonist can do with this superpower. This is practical research... Ahem! Even the authors need to do practical research, and it is normal for Huang Yueying to do it.

But gear is too pediatric in Sun Yu's eyes, so he never expected Huang Yueying to test its universality. Now when Huang Yueying talks about it, he realizes that he is simply fussy.

When Huang Yueying saw Sun Yu nodding in support, she was immediately delighted. She was a woman who liked to invent and create. Now she was with the monster Sun Yu, and she wanted to ask him for advice. Now she got his affirmation. So she quickly brought out her own difficult problems: "Mr. Xunzhen, recently I discovered a problem when I was studying gear sets. I initially used wooden gears, but the biting force was strong when the gears rotated, so they collided and worn out very much. The service life of wooden gears was very short, so I wanted to make the gears into iron gears."

She spread her hands and said, "It is not difficult to make individual iron gears, but iron gears cannot be nailed together with nails. It is difficult for me to combine them into a gear set."

Oh, this is a big problem. Sun Yu understood as soon as he heard it. There were no screws and screw caps in this era. If you want to closely connect two iron utensils, you are very poor. You can only use beef tendons to wrap them, but when the gear set is transported, the bite force is extremely strong, and the beef tendons are not reliable.

After all, if you want to perfectly use gears, screws and screw caps, you should have it. But... in this era, how could I create a machine tool that can precisely process spiral patterns? This is completely unrealistic.

Forget it, I will briefly explain this to Huang Yueying to inspire her ideas, but also tell him the difficulty of processing spiral patterns and let her retreat. Scientific research must be done within her ability. It is not possible to be too far beyond the times.

Sun Yu put on a serious face, then asked nm01 to project an iron screw and screw cap on the wall, and then asked nm01 to show the combination of screws and screw caps in an animation.

This strange thing immediately attracted Huang Yueying's attention: "This thing called screw is indeed amazing. Through these spiral concave and convex combinations, two metal objects can be tightly combined, which is much stronger than ordinary nail objects. Mr. Xunzhen, you are so awesome, how did you come up with this thing?"

"Well, I don't know how this thing came up with." Sun Yu responded casually. Of course, he didn't say nonsense. He couldn't figure out who invented the screws and what era they were invented. In fact, no one was interested in how this kind of thing that appeared in the world in later generations.

Huang Yueying sighed and said, "This thing is really amazing, but I found a problem. This spiral pattern... seems to be difficult to do."

Sun Yu thought to himself: You are aware of the goods. Without a machine tool, it is impossible for us to make screws and nuts that can be tightly screwed together. If it is hand-processed, the spiral patterns of the screws and nuts will not match the size.

So Sun Yu sighed: "Yes, the processing of this screw pattern is very difficult. If the blacksmith of this era takes action, it is impossible to carve even spiral patterns on the iron nails, so this invention has no place to be used for the time being."

Unexpectedly, as soon as Sun Yu finished speaking, Huang Yueying said curiously: "I think it is not difficult to carve on iron nails. The difficult thing is how to draw a perfect spiral on the nails."

Sun Yu smiled and said, "It is very simple to draw spiral patterns. Find a piece of white paper, draw two parallel lines that are very close to each other, and then wrap the strips diagonally onto the iron nails. These two parallel lines can become perfect spiral patterns, just carve them along these two parallel lines. But whose hand can be so stable? Carve them along the parallel lines on the small iron nails?"

Sun Yu was not afraid of proposing the concept of parallel lines. In fact, the concept of parallelism was proposed very early in China. Many ancient poems and books mentioned the word parallelism. He believed that the smart Huang Yueying would definitely understand it.

Huang Yueying understood it, and her eyes lit up and said happily: "Sure enough, this method can be used to draw a perfect spiral pattern on the iron nails. Haha, it's great! Mr. Xunzhen, you don't have to worry about the problem of being stable in your hands. Leave this to me."

Huang Yueying did it as soon as she said she dragged Sun Yu and ran to the backyard. There was a small workshop here, which contained a complete set of equipment for ironworking, stoves, hammers, chisels, carvings, saws, planes... It was really everything.

Huang Yueying quickly raised the fire, burned the iron, and then made a very thick iron nail and a nut-shaped iron block. Then she drew two parallel lines on the paper strip according to the method Sun Yu said. Sun Yu initially thought Huang Yueying would encounter difficulties when drawing parallel lines, but Huang Yueying took out a strange ruler. This ruler was made of copper, but Sun Yu could tell the weird shape with just one glance. This was a vernier caliper... It was a piece of cake to draw parallel lines.

Damn, there were vernier calipers in the Three Kingdoms era? This is too scientific! Sun Yu was shocked. After coming to this world, he often complained that the world was "too unscientific", but he didn't expect that there would be times when he complained that it was "too scientific".

As a result, nm01 answered seriously: "That thing is called 'Xinmang Copper Caliper'. It is treasured in the National Museum of Beijing. It was invented by Wang Mang, the largest strange reformer in Chinese history..."

Dizzy, Wang Mang, this guy is not a time traveler, right? Sun Yu, oh, wait, my buddy "invented" the screws in this era. If another time traveler comes to this parallel time and space in a few hundred years, will he also sigh: "Sun Yu hundreds of years ago was too scientific. This guy is not a time traveler, right?"

Sun Yu was thinking about it all, while Huang Yueying on the other side was not idle either. She wrapped the strips of the parallel lines onto the nails and stuck them in the inner circle of the nut in the same way.

Then Huang Yueying's body shone with golden light, and the word "God of Workers" jumped up. The carving knife originally placed on the ground was surrounded by golden light, as if it was grabbed by an invisible big hand, and began to carve spiral patterns on the nails in detail.

Sun Yu couldn't help but be slightly surprised. By the way, I always consider the problem from a scientific perspective and thought that precision processing could not be achieved in the Three Kingdoms era, but... the world is not scientific at all. It is simply a piece of cake to hand over the impossible things such as precision processing to strange generals.

After a while, the screws and screw caps were carved. Huang Yueying received the "God of Workers" and held the screws and nuts in each hand, and screwed them together with some anxiety.

Soon, the screws and nuts were perfectly combined and tightly entangled.

"Wow! It's really great." Huang Yueying said happily: "This thing is much more stable than nails. Xunzhen, your invention is really great." She was happy and even saved the word "Sir" behind Mr. Xunzhen, and became called Xunzhen.

Sun Yu was not in the mood to argue with her, and said with a wry smile: "You won't plan to use it for various experiments again, right?"

Huang Yueying laughed and said, "You discovered it again. I want to use it to fix various gear sets. Hahaha, now I can make super large iron gear sets, which are durable."

Sun Yu shrugged. He was doing scientific research himself. He knew that Huang Yueying was about to start a crazy large-scale experiment. At this time, scientists would be so stubborn that they didn't care about anything, so he planned to go out.

"Xunzhen... you are really great." Huang Yueying suddenly looked at him with a red face and said, "The design of this screw cap and the idea of ​​wrapping spiral patterns with two parallel lines have opened my eyes... You are such a good man."

Kill! Sun Yu was planning to be polite.

Huang Yueying's body suddenly leaned forward and kissed Sun Yu's face with a dragonfly. The gentle touch suddenly made Sun Yu's heart have a peach-colored fantasy.

Huang Yueying said quietly: "Do you really like ugly girls? Don't lie to me! I know that your wife is all beautiful in the world. Are you deliberately saying this to squeeze my mother out of the way?"

Sun Yu was joking for a moment and couldn't help but joke: "I'm used to eating delicacies, and occasionally I want to eat some coarse grains."

Huang Yueying: “…”
Chapter completed!