Chapter 456: Barrel Processing

Zhao Zhongyao is telling the truth, he was not originally a military expert in designing weapons, he was originally just a physicist, but after being reborn in this parallel space, due to some work reasons, he began to learn to design weapon drawings. Pen & Fun & Pavilion www.biquge.info

Everything was self-taught. There was no teacher to teach him at all. He is completely self-taught. It's not what Zhao Gang thought, Zhao Zhongyao graduated from some military academies specializing in it. The guns and weapons that are designed now were also learned at that time.

"Ah, Director Zhao, you are actually self-taught! As soon as Zhao Gang heard Zhao Zhongyao's words, he naturally admired him very much.

When Zhao Zhongyao heard this, he reached out and patted Zhao Gang's shoulder and smiled: "You can too, as long as you have this determination, there is nothing that cannot be done." ”

"Well, thank you Director Zhao for your encouragement, I will work hard. ”

After listening to Zhao Zhongyao's words, Zhao Gang also had a little confidence in his heart to learn weapon design.

"Oh, what's the matter with you coming to me. ”

Zhao Zhongyao and Zhao Gang talked for a long time, and suddenly it occurred to him that he must have something to do when he came to him, and he would not come to see the drawings for his design of the AK-47.

"Director Zhao, I almost forgot what you said, I came to find you for business. Zhao Gang listened to Zhao Zhongyao's words, and then thought of what he was doing to fight Zhao Zhongyao.

"What's the matter, is it not about the production of weapons. "Zhao Zhongyao doesn't have to think about it, since it was Zhao Gang who came to him, there must be something wrong with the production of weapons.

Zhao Gang nodded first, and then said: "That's the case, Director Zhao, it was very smooth when we first produced weapons. But when it came time to produce the barrel of such a gun, some problems were encountered. ”

"Oh, what's the problem, tell me, I'll see if I can help you solve it. ”

As soon as Zhao Zhongyao heard Zhao Gang's words, he asked him what was wrong, and he could help them solve it.

"Director Zhao, that's the case, when we produced the barrel this time, because the electric drill on the milling machine was not long enough, it couldn't mill the rifling inside the barrel, what do you say!"

After Zhao Gang finished speaking, he looked at Zhao Zhongyao quietly, hoping that he could think of some way.

After Zhao Zhongyao listened, he thought about it carefully, some knowledge about rifling in the barrel, after all, he is also an old military fan in production, and he also knows some about the knowledge of barrel processing.

The spiral-shaped groove processed from the inner wall of the rifled gun chamber is called rifling, also known as the reciprocating line. The raised part is male-rifling, and the concave part is female-rifling. The rifling of this barrel is called rifling and is the main part of the barrel. The rifling is the warhead inside the chamber of the gun

And accelerate the main space so that it has enough angular velocity to rotate around its own axis to maintain the stability of space flight. The rifling marks formed on the shooting bullet are the most valuable among the 29 types of bullet shooting marks, and it can often provide some of the most valuable information, such as the type, model, manufacturing process, and newness 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 top of the lathe, you take the tailstock part of the lathe, mill it into a spiral shape, it is designed according to the lead of your barrel, and install an alloy head on it, there are 4 or 6 coo, so that you can extrude the rifling.

In fact, a qualified barrel must have a good material designed in advance, such as: a certain proportion of tungsten to prevent the barrel from becoming soft after continuous firing redness, and a certain proportion of carbon can improve the rigidity and make it strong.

Zhao Zhongyao thought about the knowledge of barrel rifling that he knew before his death, and thought that to solve this problem, he had to redesign a drill bit on a milling machine, so that this kind of drill bit could mill the long barrel of this new gun.

To say, there is no difficulty in designing such a new drill bit, that is, it is longer than the previous one.

But the problem is that they are running out of time to produce new guns now. If they had to redesign a drill bit and reprocess it, it would have taken at least a few days! In that case, they wouldn't have been able to produce a new gun in two weeks.

"What to do, what to do. Zhao Zhongyao's mind was spinning rapidly.

"It seems that if you want to design another drill bit, I'm afraid it's too late. I can only modify the drawings. Anyway, this is a new gun, what it was supposed to look like, no one knows, and now change the drawings, it won't be a big deal. ”

Of course, Zhao Zhongyao has not yet seen the actual situation at the scene, and he is not good at saying that he wants to modify the drawings first, after all, the things on the design drawings have been reviewed by the superiors, and if they are modified casually, they will naturally make the superior leaders unhappy.

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." ”

"Alright then!"

Zhao Gang had no choice but to work with Zhao Zhongyao to come out of the factory director's office, go downstairs, and come to the production workshop.

When Zhao Zhongyao saw that there was a barrel that was being rifled on the milling machine, he felt that the drill bit of this milling machine was indeed a little short. Because the barrel of this gun is nearly 10 centimeters longer than that of an ordinary rifle, it is 508 millimeters. And the hours on this kind of milling machine can be drilled to 500 millimeters at most, and there are still 8 millimeters left to drill through such a barrel. If it can't be drilled through, of course, the barrel drilled out will be useless.

The barrel is cold-forged from high-strength steel, and the chamber and chamber are chrome-plated. The barrel has an annular radiator on the outside, and each barrel has eight protrusions at the end of the chamber, which are locked into a steel connection sleeve inside the receiver, and the bolt is fixed to the rear of this connecting sleeve. The barrel connecting sleeve is fixed on the right side of the receiver with a spline, and the connecting spline coincides with the protrusions on the barrel and the bolt, and when the barrel and bolt are in the connecting sleeve, their surfaces are completely meshed to form a closed air loop.

The barrel is the most important part of a gun, and the quality of a rifle depends on the production technology and process of the barrel. If something goes wrong when processing the barrel, no matter how good the gun is, it can only be scrap.

As a veteran military fan, Zhao Zhongyao naturally knows the importance of the barrel for a gun. Now it was in the manufacture of the barrel that went wrong, and of course he could not take it lightly. Surely 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, I am afraid it is too late. And it is also a hassle to modify the drawings. First of all, these two old guys, I'm afraid they won't agree!

After weighing it, Zhao Zhongyao decided to choose the latter. Because two old fellows, with a little bit of talk, might be able to convince them.

But to redesign a milling machine drill is a hassle, and it can take days to complete!

"Director Zhao, what do you say to do now! Workers, just waiting for you to come up with an idea!" Zhao Gang saw that Zhao Zhongyao was also a little at a loss, so he had to ask again.

"Alas, let's revise the drawings!" Zhao Zhongyao sighed first, and then looked at Zhao Gang and said such a sentence helplessly.

"Modify the drawing!"

As soon as Zhao Gang heard Zhao Zhongyao's words, his eyes immediately widened. You know, he has never experienced this kind of thing. He has been working as a director of a military factory for seven or eight years, and he has also produced a lot of guns and weapons of all kinds, and he has never said that in the process of producing a new weapon, he will revise the drawings. This is something that has never happened before.

"That's right, that's all there is to it now. It would have taken several days to redesign and produce a milling machine bit, and in that case, we wouldn't have been able to produce these three experimental guns in two weeks. ”

Zhao Zhongyao looked at what Zhao Gang said to him, and expressed surprise, and he had to explain helplessly.

"Director Zhao, it's just that this drawing was designed by Expert Zhang and Expert Chen, will they agree to modify the drawing!"

As soon as Zhao Gang heard Zhao Zhongyao's words, he felt that this method was a little difficult!

"If they don't agree, they have to agree, what can be done, if we don't want to be in such a hurry, we can naturally produce slowly. However, time is now pressing, and this gun is going to be taken to the small arms exhibition of country M! There is only half a month left, and we must produce this gun ahead of schedule. ”

Of course, Zhao Zhongyao knew that these two old guys would disagree. Who wants to revise the drawings they have designed again, which is disrespectful to the designer.

"Then listen to Director Zhao, what you say you can do!"

Although Zhao Gang was surprised, there was nothing he could do. There is only one way to let Zhao Zhongyao negotiate with the two old guys.

"Alright, you can call the two old fellows! I'm going to talk to them both in person. Zhao Zhongyao knew that this matter had to be explained to the two old guys on the spot, otherwise, they still didn't believe that the barrel they designed couldn't be processed on this kind of milling machine!

Zhao Gang listened to Zhao Zhongyao's words, so he had no choice but to nod, then walked out of the workshop and walked towards the office building.

The two old guys, naturally, will not stay in the workshop all the time, they will be in the workshop in the morning to see how the new parts produced by the workers are, to see if the size is qualified. Then in the afternoon, I will go back to my office, smoke and chat!

It was already afternoon, and the two of them were smoking and chatting in the office, and they were in a very happy mood. Because they have already seen that the new guns they designed will be produced soon, and when the time comes, the new guns they designed will be recognized by the market at the light weapons exhibition in country M, and then bring back many orders, then the two of them will be the heroes of the 308 base, and the superior leaders will definitely give them both spiritual and material rewards.

"Lao Zhang! What is the new gun you designed? It looks pretty good, don't look like it's useless. ”

Chen Dongshan likes to joke about Zhang Lianying, so while smoking, he looked at Zhang Lianying next to him and asked.

"Lao Chen, I said why are you so verbose! Didn't I tell you, this gun I designed is the most advanced gun in the world, how can it be useless! When it is produced, I will let you try a few bullets, and you will definitely feel that the shooting accuracy and range of this gun are quite amazing. ”

Zhang Lianying knew that this gun was not designed by himself, but was given to him by one of his classmates who studied in country M. It was this classmate who saw it from some internal military publications, and it was a new type of firearm weapon of a conceptual nature.

And the military industrial level of country M is the highest in the world. The new weapons designed by others are naturally the most advanced in the world. Since this kind of gun belongs to the conceptual weapon designed by others, that is to say, in the future, the army of other countries will generally use this kind of gun!

Since it is a gun designed by a superpower, how can it be useless. It is only right that it is more advanced than the light weapons of most countries in the world, and how can it be inferior to ordinary firearms and weapons.

Zhang Lianying was naturally very confident, and he didn't take what Chen Dongshan said in his eyes at all.

After listening to Zhang Lianying's words, Chen Dongshan naturally had nothing to object. He took a puff of cigarette, and then after it came out of his nostrils, he looked at Zhang Lianying again and said, "Hey, Lao Chen, I suddenly thought of a question!"

"What's the problem?"

Zhang Lianying had already finished smoking a cigarette and was just about to take another one from the cigarette case. But as soon as he heard Chen Dongshan's words, he immediately put the cigarette case on the table again.

"You said that the gun you designed was designed by an expert from the old man. This kind of gun designed by others must conform to the processing dimensions of some machine tools in other military factories. And, our machine tools, and other people's machine tools, is definitely not exactly the same. You said that you don't design the drawings yourself, and directly copy other people's drawings, so can all the parts of your gun be produced in our workshop!"

It seems that Chen Dongshan is still a very careful person, and when he designs various bombs, he must consider whether the size of his design is consistent with the maximum size of the machine tool processing in the workshop!

If the dimensions on the drawings you design are different from the dimensions set on the machine tools in the workshop, which is beyond the scope of machine tool processing, then how can you successfully produce the designed weapons.

Zhang Lianying was originally very confident in the design drawings of this gun that he 'copied'. Because he only considered that this design was designed by the military experts of the supermilitary power of country M, it must be the most advanced light weapon in the world.

When he 'plagiarized', he naturally did not consider any contradiction between the dimensions on the drawings and the processing dimensions of the workshop machine tools.

Now when he heard Chen Dongshan's words, he suddenly felt a little worried. After all, it was something he hadn't thought about before.

It's just that Zhang Lianying has been bragging in front of Chen Dongshan about how powerful this gun he 'designed' is. Now if you want to say that this kind of gun designed by himself may not be able to be produced in the workshop at all, then all his previous boasting will not become nonsense. (To be continued.) )