Daming pirates

They tried various methods, but the first few spiral groove rollers they made had problems. The spiral grooves were always not standard enough, and the twist was either not enough or the error was too large.

Later, Blacksmith Zhang came up with a way to solve this problem. He used several threads to wrap around the wooden roller in one direction. Finally, he marked these lines on the wooden roller, and then cut the knife to start carving grooves. Finally, he made the

It became a qualified wooden roller with spiral grooves.

Zhang Tiejiang is a very impatient person, and he won't say anything until he quits. Once he starts tinkering with something, he will work tirelessly to get it out as soon as possible.

But now that he had freed up time after handing over the responsibility of managing the gunsmithing industry, he simply focused on this matter wholeheartedly, with a few blacksmiths he selected, a few apprentices, and a carpenter.

, all brought their bedrolls and lived in a work shed in Qianzuo.

Under the leadership of Zhang Tiejiang, these people kept hammering and hammering every day to make various parts for this rifling machine. However, the hand-made production errors were large, and they did not have standard design drawings, so they could only fumble around, and the parts always came out.

It was not quite up to par, so I had to do it again.

It took about ten days for this rifling machine tool to take shape in the hands of Zhang Tiejiang and others, and it was ready for certain experiments.

So Blacksmith Zhang invited Yu Xiaotian to the gunsmith to watch the rifling machine they made.

As soon as Yu Xiaotian entered the experimental processing plant of Zhang Blacksmith, he saw this horizontal rifling machine, so he immediately rushed over excitedly and began to watch it carefully.

There was basically no difference in shape between this rifling machine and the primitive rifling machines he had seen in pictures and videos in his memory, so he began to carefully observe the structure of this simple machine and try it himself.

After a while, when pulling the wooden roller with spiral grooves, the spiral grooves on the wooden stick slowly rotated in the slot, pulling a long iron rod.

The front end of the iron rod is a broach with a delicate structure. The broach can be disassembled and can be stuck in the gun chamber with a shim to prevent it from deflecting when the knife is moved. This aspect was not designed by him, everything was done.

It was a method thought up by Blacksmith Zhang and others. He was not sure whether it was exactly the same as the broaches used by Western gunsmiths in history.

The broach is stuck on the iron rod and is pulled as the wooden roller rotates. It can be inserted into the gun chamber until it is pulled out from the other end of the gun chamber.

In this way, it is basically no different from the simple rifling machine he knows. Then they can conduct experiments to see if this machine can pull out a usable belt for them.

Rifled barrel.

So Yu Xiaotian immediately ordered Blacksmith Zhang to fetch several finished smoothbore barrels that had been forged and drilled, and began to test them in the workshop.

The smoothbore barrel is stuck on the fixture of the machine tool. After correction, it is stuck on the fixture with an iron wedge and is completely fixed firmly.

Blacksmith Zhang nervously began to work on the rifling machine. He first inserted the iron rod that fixed the broach into the barrel from the front of the barrel until the head of the broach was exposed from the back. Then Blacksmith Zhang took out a prototype they made.

After the broach comes out, fix the broach on the base of the long rod with a gasket, and gently send it into the gun bore until the broach is stuck at the mouth of the gun bore, then go to the other end and start working.

He fixed the other end of the long pole on the wooden roller with spiral grooves, and used a pin to block the long pole so that it could not move. He checked it back and forth several times, and after calibrating it, it was ready.

Prepare.

Yu Xiaotian did not do it himself, but carefully watched their work from the sidelines. Judging from the order of their work, it was basically the same as the steps of the Western craftsmen in the video he had seen in his memory.

It wasn't until Blacksmith Zhang and the others completed all the preparations and looked nervously at the machine tool that Yu Xiaotian nodded and said: "Let's get started! Try this thing to see if it can work! Don't be afraid of failure. If it fails, just continue to modify it.

, now it seems that there is basically no problem, it should be fine!”

Blacksmith Zhang quickly nodded in agreement, drove the others away, walked to one end of the machine tool himself, and grabbed the handle of the wooden roller.

As Blacksmith Zhang began to pull the handle hard, the wooden stick with the spiral groove began to be in the slot, slowly rotating and being pulled to the other end of the machine. It also drove the long rod holding the broach, and slowly

It entered the barrel of the gun.

There was a slightly harsh sound of metal friction coming from the barrel of the gun. It could be heard that the edge of the hard broach had penetrated the relatively soft inner wall of the wrought iron barrel.

The wooden roller was slowly rotated while being pulled out by Blacksmith Zhang. The long rod also drove the knife, which rotated while feeding into the gun chamber.

This process actually didn't take long, but in everyone's eyes, time seemed to have frozen. It wasn't until the broach was pulled out from the other end of the gun barrel by Blacksmith Zhang that Yu Xiaocai realized that the first rifling line should have been

Created by him.

So Zhang Blacksmith took off the long pole, and someone immediately brought a piece of white paper and put it to the other end of the gun barrel. Yu Xiaotian couldn't wait to get to the other end of the gun barrel, closed one eye and started to look through the muzzle of the gun.

, looking into the barrel of the gun.

Because there was a piece of white paper at the other end, he could clearly see what was going on inside the gun chamber.

In the inner chamber of the gun barrel, which was originally polished smooth and round, a clear rotating spiral groove appeared at this time, forming a regular engraved line. Yu Xiaotian almost jumped up with joy on the spot and bared his big white teeth.

He laughed loudly: "Haha! It's done! The first rifling is carved out! Haha..."

The entire work shed was filled with Yu Xiaotian's wild laughter. At this moment, he was so happy that he almost forgot everything. He wanted to hug Blacksmith Zhang and kiss him hard. Everyone was so shocked that they quickly took two steps back, worried about Yu Xiaotian.

If you lose your mind and get crazy, this will be troublesome.

Fortunately, Xiaotian's nerves were strong enough and he could bear such a happy event. He didn't go crazy on the spot. After laughing wildly for a while, he started to look for problems.

"This rifling is very even, so there should be no problem! It just looks a little shallow! I need to pull it a few times to make the incised line a little deeper!"

Blacksmith Zhang also came over and carefully observed the barrel of the gun from the mouth of the barrel. He was also very excited and happy at this moment. This line seemed very simple, but it condensed his hard work for more than ten days and nights, and he did not expect that

, Such a simple method actually solved such a big problem. Relying on this wooden roller with spiral grooves, it was possible to carve such a uniform rifling in the small gun bore. He really thought.

I don’t understand how Yu Xiaotian came up with this method.

So he straightened his back and said to Xiaotian: "Master, the younger ones are really impressed by you! You can actually think of all these methods. If we are allowed to think about it, then give it to the younger ones.

I’m afraid I won’t be able to come up with such a solution in a few years!”

At this time, the apprentice craftsmen who participated in the trial production of the rifling machine also came over to look at the rifling in the gun chamber. They were all excited and amazed at the same time.

Yu Xiaotian felt a little proud, but he immediately realized that he did not invent this thing, and he was just copying the technology of his predecessors in history. But he immediately thought about it, and estimated that he would invent this kind of thing.

The person who carved the rifling was not born yet. Now that he has created this thing, even if it is plagiarism, it can only be blamed on him. So he said sternly: "Nothing is difficult in the world, only those who are willing! As long as you use your heart,

In fact, you can come up with many good ideas! The key is to think more and ponder more!"

Blacksmith Zhang nodded in agreement, and then said to the craftsmen and apprentices around him: "Have you guys heard what the master said? You have to pay more attention. Don't just think about eating and sleeping all day long. Take a look.

As a boss, you still have so many things to think about during your busy schedule. You should also learn to be more careful in the future..."

These craftsmen and apprentices quickly said yes. Now in their eyes, Yu Xiaotian is simply a god. He led them to make guns and cannons, creating sharp and powerful weapons one after another, and even made

There are many convenient tools and machines, and they have also come up with the current production method, which can be said to have created miracles one after another. If they were asked to do this kind of thing, they would never dare to think about it, but it is due to filial piety.

Under the guidance of God, everything was completed one by one.

Therefore, this group of people admired Xiaotian so much that they were willing to do whatever they were asked to do. They just thought that if they could learn from Yu Xiaotian, it would be enough for them for the rest of their lives.

Next, Blacksmith Zhang adjusted the thickness of the broach's gasket, pulled the handle again, and pulled the broach back and forth several times. After observing, the inscribed lines of the rifling had become deeper, and Yu Xiaotian was satisfied.

.

Blacksmith Zhang continued his efforts, adjusted the blade head, and began to pull out the remaining rifling. After tossing back and forth for a long time, he finally pulled the barrel completely into rifling.

Yu Xiaotian lay in front of the muzzle of the gun and looked at the circles of rifling inside the barrel. He felt that this was the most beautiful thing in the world. He wanted to sleep with his arms around the barrel of the gun. He almost drooled all over the floor. He was so excited.

A little bit of a dance.

But he finally controlled his emotions. Although the rifled barrel has been made, there are still some problems with the machine. The base of the cutter head is not easy to use, and it is very troublesome to adjust.

The quality of the head didn't seem to be very good, so I just pulled out a barrel, and the cutting edge of the tool was already a little bit not sharp and needed to be polished before it could continue to be used.

In addition, there are some minor problems with this machine, so I won’t go into them one by one. Blacksmith Zhang has also discovered these problems, noted them down one by one, and decided to continue modifying them until these minor problems are completely solved.

But no matter what, the first rifled barrel was taken out by them, and the next step was to wait for testing.