Chapter 439: The processing problem of the barrel

Zhao Zhongyao is telling the truth. He was not originally a military expert who designed weapons. He was originally a physicist. He was only reborn in this parallel space. Due to some work reasons, he began to learn to design weapons drawings.
Everything was taught by himself. No teacher taught him at all. He is completely self-taught. It was not what Zhao Gang thought. Zhao Zhongyao graduated from some military academies. The guns and weapons designed now were also studied at that time.
"Ah, Director Zhao, you turned out to be self-taught! I really admire it." Zhao Gang naturally admired Zhao Zhongyao when he heard what he said.
When Zhao Zhongyao heard this, he stretched out his hand to pat Zhao Gang's shoulder and smiled: "You can do it too. As long as you have this determination, nothing is impossible."
"Yeah! Okay, thank Director Zhao for his encouragement. I will work hard."
After hearing what Zhao Zhongyao said, Zhao Gang felt confident about learning weapon design.
"Oh, what are you going to do to find me."
Zhao Zhongyao and Zhao Gang talked for a long time, and suddenly thought that he must have something to come to see himself, he would not come to see the drawings of his AK-47.
"Director Zhao, I almost forgot what you said. I came to find you on business." After Zhao Zhongyao's words, Zhao Gang realized what he was doing to beat Zhao Zhongyao.
"What's the matter? Is it the production of weapons?" Zhao Zhongyao didn't need to think, since it was Zhao Gang who came to him, it must have happened in the production of weapons.
Zhao Gang nodded first, and then said: "That's right, Director Zhao, when we first started producing weapons, it was very smooth. But when we produced the barrels of this gun, we encountered some problems."
"Oh, what is the problem, tell me, I see if I can help you solve it."
As soon as Zhao Zhongyao heard what Zhao Gang said, he asked him what went wrong, so he could help them solve it.
"Director Zhao, this is the case. When we produced barrels this time, because the electric drill on the milling machine was not long enough, we couldn't mill out the rifling in the barrel. What do you think about it!"
After Zhao Gang finished speaking, he looked at Zhao Zhongyao quietly, hoping that he could think of something.
After listening to Zhao Zhongyao, he thought about it carefully. Some knowledge about the rifling in the barrel. After all, he is also an old army fan in production, and he also knows some knowledge about barrel processing.
The spiral groove formed by the inner wall of the rifled gun bore is called rifling, or rifle. The convex part is male rifling, and the concave part is female rifling. The rifled section of the barrel with rifled lines is called rifled, which is the main part of the barrel. The rifled is the bullet in the barrel
And accelerate the main space, so that it has enough angular velocity to rotate around its own axis, and maintain the stability of space flight. The traces formed by the rifling on the shooting warhead are the most valuable among the 29 types of bullet shooting traces. It can often provide some of the most valuable information, such as the type, model, manufacturing process, and oldness of the gun. The application of rifling has a history of hundreds of years,
The rifling of the barrel can also be solved on the lathe. You mill the tailstock part of the lathe into a spiral shape, which is designed according to the lead of your barrel. Install an alloy head on it, there are 4 or 6 Cao, so you can squeeze out the rifling.
In fact, qualified barrels must have good materials designed in advance. Metaphor: A certain proportion of tungsten can prevent the barrel from becoming soft after continuous firing. A certain proportion of carbon can increase rigidity and make it strong.
Zhao Zhongyao thought about the knowledge of barrel rifling he knew before he was alive. He thought that to solve this problem, he had to redesign a drill bit on a milling machine so that this drill bit can mill the spear of this new gun. tube.
In other words, there is no difficulty in designing such a new drill bit, that is, it is longer than the previous one.
The problem is that they have run out of time to produce new guns. If a drill is redesigned and then processed and produced, it will take at least several days! If that were the case, they would not be able to produce a new gun within two weeks.
"What to do, what to do." Zhao Zhongyao's mind was spinning fast.
"It seems that if you want to design another drill bit, I am afraid it is too late. I can only modify the drawing. Anyway, this is a new gun. No one knows what it should look like. Now I will change the drawing. , That’s no big deal."
Of course, Zhao Zhongyao hasn’t come to the site to see the actual situation, so it’s hard for him to say that he needs to modify the drawings. After all, the design drawings have been reviewed by the superiors. If they are modified randomly, they will naturally make the superiors unhappy of.
Thinking of this, Zhao Zhongyao said to Zhao Gang: "Let's go, let's go to the workshop first, and I'll find a way for you."
"OK then!"
Zhao Gang had to go out of the factory director’s office with Zhao Zhongyao, and went downstairs to the production workshop.
When Zhao Zhongyao saw that there was a rifling barrel on the milling machine, he felt that the drill bit of this milling machine was indeed a bit short. Because the barrel of this gun is nearly ten centimeters longer than ordinary rifles! There are five hundred and eight millimeters. And the hour on this kind of milling machine can drill up to 500 millimeters at most, which is less than eight millimeters to drill through such a barrel. If you cannot drill through, of course the drilled barrel is useless.
The barrel is cold forged from high-strength steel, and the barrel and barrel are chrome-plated. There are ring-shaped radiating ribs on the outside of the barrel. There are eight shoots at the end of the barrel of each barrel, which are used to lock in the steel connecting sleeve in the receiver, and the bolt is fixed at the back of the connecting sleeve. The barrel connecting sleeve is fixed on the right side of the receiver with splines. The connecting splines are also overlapped with the barrel and the shoots on the bolt. When the barrel and bolt are in the connecting sleeve, their surfaces are completely meshed. Close the air ring.
The barrel is the most important part of a gun. The quality of a rifle depends on the production technology and process of the barrel. If something goes wrong in the processing of the barrel, the best gun can only be a waste product.
As an old military fan, Zhao Zhongyao naturally knows the importance of the barrel for a gun. Now that something went wrong while manufacturing the barrel, he certainly couldn't take it lightly. Must find a way to solve this problem.
But Zhao Zhongyao was thinking about it, and there was no other way to redesign a milling machine drill bit, fearing it would be too late. It is also a hassle to modify the drawings. First of all, these two old guys, I am afraid that neither of them will agree!
After weighing it, Zhao Zhongyao decided to select the latter. Because the two old guys may be able to persuade them with just a few words.
But to redesign a milling machine drill bit, that is a troublesome task, it may take several days to complete!
"Director Zhao, what do you want to do now! Workers, just wait for you to make up your mind!" Zhao Gang looked at Zhao Zhongyao a little at a loss, so he had to ask again.
"Hey! Let's revise the drawing!" Zhao Zhongyao sighed first, then watched Zhao Gang reluctantly said such a sentence.
"Modify the drawings!"
When Zhao Gang heard what Zhao Zhongyao said, his eyes widened immediately. You know, he has never experienced this kind of thing. He has worked in the military factory for seven or eight years, and he has produced a lot of guns and weapons. He never said that to produce a new weapon, in the production process, he would modify the drawings. This is something that has never happened before.
"Yes, this is the only way now. Because we want to redesign and produce a milling machine drill bit, it will take several days! If that is the case, it is impossible for us to put these three experimental guns in two weeks. Produce it."
Zhao Zhongyao looked surprised at what Zhao Gang said to him, so he had no choice but to explain it.
"Director Zhao, it's just that this drawing was designed by Expert Zhang and Expert Chen. Will they agree to modify the drawing!"
When Zhao Gang heard what Zhao Zhongyao said, he felt that this method might be a little difficult too!
"They disagree and have to agree. There is no way to do this. If it is not so urgent, we can naturally produce it slowly. But now time is running out, and this gun is going to participate in the light weapons exhibition in M ​​country! Only half of it is left. Month’s time, we must produce this gun in advance."
Of course Zhao Zhongyao knew that these two old guys would disagree. Who wants to revise the drawings that they have designed is a disrespect to the designer.
"Then listen to Director Zhao, and do what you say!"
Although Zhao Gang was surprised, he had nothing to do. Only let Zhao Zhongyao negotiate with the two old guys.
"Okay, call the two old guys over here! I'm going to talk to them both in person." Zhao Zhongyao knows that this matter will also be explained to the two old guys on the spot, otherwise, they still don't believe in their own design. The barrel cannot be processed on this milling machine!
Zhao Gang heard what Zhao Zhongyao said, so he nodded, then walked out of the workshop and toward the office building.
Naturally, the two old guys won't stay in the workshop all the time. They just spend a day in the workshop in the morning to see how the new parts are produced by the workers and see if the size is qualified. Then I went back to my office in the afternoon to smoke and chat!
It was already afternoon, and the two of them were smoking and chatting in the office, feeling very happy. Because they have already seen that the new gun they designed will be produced soon. Then, the new gun they designed will be recognized by the market at the light weapons exhibition in M ​​country, and then they have brought back many orders. The two of them are the heroes of the 308 base, and the superior leaders will definitely give them both spiritual and material rewards.
"Lao Zhang! How about this new gun you designed! It looks pretty good, don't be blind to it."
Chen Dongshan liked to make fun of Zhang Lianying, so he asked while looking at Zhang Lianying next to him while smoking.
"Old Chen, I said why you are so long-winded! I didn't tell you. The gun I designed is the most advanced gun in the world. How can it be unusable! When it is produced, I will let If you try a few rounds, you will definitely feel that the accuracy and range of this gun is quite amazing."
Zhang Lianying knew that this gun was not designed by himself, but was given to him by one of his classmates studying in M ​​country. It was this classmate who saw from some internal military publications that it was a conceptual new type of gun weapon developed by M.
And the military level of country M is the highest in the world. The new weapon designed by others is naturally the most advanced in the world. Since this kind of gun is a conceptual weapon designed by others, it means that in the future, the army of other countries will generally use this kind of gun!
Since they are guns designed by other superpowers, how can they be unusable. It can only be seen and used, it is more advanced than the light weapons of most countries in the world, and how can it be inferior to ordinary guns.
Zhang Lianying was naturally very confident and didn't take what Chen Dongshan said into his eyes.
After listening to Zhang Lianying's words, Chen Dongshan naturally had nothing to object. He took a puff of cigarette, and after it came out of his nostrils, he looked at Zhang Lianying and said, "Hey, Old Chen, I suddenly thought of a problem!"
"what is the problem?"
Zhang Lianying had finished smoking one cigarette and just wanted to get another one from the cigarette case. But as soon as he heard what Chen Dongshan said, he immediately put the cigarette case on the table again.
"You said, the gun you designed was designed by the expert of the old M. The gun designed by others must be in line with the processing dimensions of some machine tools in other military factories. And, our machine tools and other machine tools , It’s definitely not exactly the same. You said that you don’t design the drawings yourself, but copy other people’s drawings directly, then can all the parts of your gun be produced in our workshop!"
It seems that Chen Dongshan is still a very careful person. When designing various bombs, he must consider whether the size of his design matches the maximum size of the machine tool in the workshop!
If the dimensions on the drawings you design are different from the dimensions set on the machine tools in the workshop, and are beyond the scope of machine tool processing, how can you successfully produce the designed weapons?
Zhang Lianying was very confident that he had "plagiarized" this kind of gun design. Because he only considered this design drawing, which was designed by the military industry experts of the super military power of country M, it must be the most advanced light weapon in the world.
When he ‘plagiarized’, he would naturally not consider any contradiction between the dimensions on the drawing and the machining dimensions of the machine tool in the workshop.
Now when he heard what Chen Dongshan said, he suddenly felt a little worried. After all, this matter was not considered by him before.
It's just that Zhang Lianying has been boasting in front of Chen Dongshan how powerful the guns he'designed' are. Now I want to say that this kind of gun he designed may not be produced in the workshop at all. Then all the bragging about him before is not all nonsense.