Otaku Engineer in Great Tang Dynasty Chapter 53: 3 views and ball bearings

　　 Li Mansion, West Yard.

　　 Li Zexuan rolled up the drawing, handed it to Yan Shaoning, and said, "Brother Shaoning, I understand your drawing method, but I still think my method is more concise and clear."

　　"Oh? Then, Xiaoxuan, tell me about your brother, what is your method of drawing."

　　 Yan Shaoning saw that Li Zexuan was very confident in his drawing method, and couldn't help but want to understand the magic of this method.

　　" The picture on this picture shows a three-view and isometric side view of a component. The so-called three-view is to draw the outline of the object from the front, side and top of the object, such as this stone. Brother Ning, look at it from the front..."

　　 Li Zexuan picked up a stone as a reference and explained the three-view drawing method to Yan Shaoning. After a while, he packaged and gave to Yan Shaoning the part that the professional teacher told him.

　　"...Look, Shaoning brother, with these three views, the craftsman can form a model of the part to be made in his mind at a glance, and it will be easier to mark dimensions on the three views."

　　 After listening to Li Zexuan’s explanation, Yan Shaoning stood up, paced, contemplating her eyebrows for a moment, and suddenly exclaimed: "Wonderful, wonderful, this drawing method is really wonderful, Xiaoxuan, you are a genius. Your drawing like this really looks clearer, with a lot of unnecessary annotations missing."

　　 Yan Shaoning sat down again, rubbed his hands, and stared at Li Zexuan excitedly: "I must tell my father this drawing method and let him promote this method, Xiaoxuan, would you like to Supervisor, if my father knows your talents, he would definitely be willing to ask you for a part-time job before your majesty."

　　 Li Zexuan shook his head and said, "Thank you, Brother Shaoning, for your kindness. The younger brother had been away from home for many years, and he just came back a few days ago. Now he doesn’t want to be an official."

　　 will be a prisoner almost equivalent to the Chinese Academy of Sciences in the previous life, let Li Zexuan do research there every day, he is not willing. Moreover, he has a lot of his own affairs recently, and the Qiqu Pavilion is about to open, and the locust eradication plan will be implemented in two days.

　　 Hearing Li Zexuan's refusal, Yan Shaoning sighed: "Oh, that's a shame."

　　 turned his gaze to the drawing again, and Yan Shaoning was puzzled: "Xiaoxuan, what does this isometric side view do?"

　　"This view is mainly to help the craftsman form a three-dimensional model of an object in his mind, because some objects with a particularly complex structure, it is difficult to imagine a three-dimensional model with only three views."

　　 Yan Shaoning nodded thoughtfully.

　　At this time, Li Zexuan smiled meaningfully: "Brother Shaoning, you only noticed this drawing method, but you ignored the picture itself."

　　 "Oh? Is there any mystery in this? Don't say anything, wait for me to see."

　　 Yan Shaoning re-examined the drawing according to the three-view principle that Li Zexuan just explained to him. After reading it, Yan Shaoning stood up, closed his eyes, and imagined the three-dimensional picture of this thing in his mind.

　　 After a while, Yan Shaoning opened his eyes and said excitedly: "I understand what this thing is, Xiaoxuan, what are you going to do with this thing?" Although he can imagine a three-dimensional model of this thing, it still Can't think of a use.

　　Li Zexuan smiled and said: "I named this thing a ball bearing, brother Shaoning, do you think, if this thing is used for the transmission connection of the wheel and the wheel shaft, what will happen?"

　　 Yan Shaoning himself has a lot of research on mechanical design. Hearing a little bit from Li Zexuan, he immediately understood that he was more excited than before.

　　"It’s amazing. This is a genius-like design. With this ball bearing, all cars in the future, whether they are carriages or trucks, will experience minimal resistance. Xiaoxuan, how did you come up with it? What? This invention is really great."

　　 Li Chengqian didn’t understand machinery, and he hadn’t said anything before. At this time, seeing Yan Shaoning was about to blow this thing into the sky, he couldn’t help but wonder: "Shaoning, is this thing so good?"

　　 Yan Shaoning was extremely excited at the moment. Hearing the Prince's question, he affirmed without thinking:

　　"Of course, it’s not an exaggeration to call this the most useful invention of my Datang. Your Royal Highness does not know that if all the cars of my Datang use this ball bearing for transmission, then the same horse , You can pull at least 50% more weight-bearing cars at a time.

　　At that time, merchants can transport more goods at a time. During war, a grain truck can load more grain and grass. In addition to vehicles, other machinery that requires transmission can also use this ball bearing. , Your Highness said that this invention is not important. "

　　 Hearing Yan Shaoning’s analysis, Li Chengqian was also stunned. He didn’t care whether the merchant could ship more goods, but it could improve the efficiency of food transportation in battle, which is really crucial. In this era, the outcome of war is decisive. One of the factors is the problem of food and grass.

　　 Li Chengqian realized that Yan Shaoning’s previous compliments were not excessive at all, and he was a little excited now.

　　"Brother Zexuan, this matter is of great importance. I wonder if I can bring the lonely back to the palace?"

　　Li Chengqian also knows that Li Tai is fighting with him recently, but he has no other good way. He can't act like Li Tai in front of Li's second eldest grandson, right? If he dare to do this~IndoMTL.com~, Li Er will surely be reprimanded by Li Er that he does not have the authority of a crown prince.

　　 There are things that Li Tai can do, but he can't because he is the prince. Seeing Li Er becoming more and more fond of Li Tai, Li Chengqian was also anxious, but he could only do so.

　　 At this time, seeing that this thing invented by Li Zexuan is so useful, it can even be used in the military, Li Chengqian first thought that maybe he could use this thing to make Li Er admire him, and by the way, he can also ask for something for Li Zexuan. benefit.

　　 Li Zexuan is a little helpless at the moment. Although this ball bearing is indeed extremely versatile, these two people are not so excited, right? Hearing Li Chengqian meant to submit this drawing to Li Er immediately, Li Zexuan said quickly:

　　 "Your Majesty, this ball bearing is indeed very useful, but I don't know if it can be made at this time. I will submit the drawing to your Majesty now. I'm afraid it was too hasty."

　　 When Li Chengqian heard this, he also felt reasonable, and secretly said that he was still too reckless.

　　 "Brother Zexuan said that, after you and Shaoning build this thing and install it on the car, you can report it to your father alone, and then you can give it to the two to ask for help."

　　 Yan Shaoning frowned as soon as he heard Li Zexuan’s words. He was a little too excited just now. He didn't even think about whether this thing could be made. He thought for a while and hesitated:

　　"Xiaoxuan, I'm afraid this ball bearing is difficult to make."

　　 When Li Zexuan proposed this ball bearing before, he didn’t know if it could be manufactured with the craftsmanship of the Tang Dynasty. Although he was mentally prepared, now he heard Yan Shaoning’s negative answer. There was still a slight disappointment in his heart. He also wanted to know where the technical difficulties were, so he asked:

　　 "Brother Shaoning, I don't know where there will be difficulties?"

　　……