Everyone was looking forward to watching, especially Zhang Chuxun's eyes widened and his shy and handsome face was full of nervousness.

His brothers' firearms were all drilled by him, and his two brothers were more of a helper. Since a long time ago, the problem of drilling the gun barrel has been bothering him.

Mr. Yang once said that the problem lies in the drill bit, and it is very simple to solve it. He smiled and finally said it.

He looked nervously, his heart was up and down.

He watched Yang Xianggong paint on the wooden board, slowly forming, and finally drawing a drill bit shape.

This is……

Zhang Chuxun's eyes froze.

Li Tiannan opened his eyes as wide as he did.

He believed that his skills in building muskets were ranked among all over Foshan, but the disadvantages of drilling the chamber have always troubled him.

If you often drill, the entire gun barrel will be destroyed.

Moreover, he has no Sugang drill bit yet, and uses low-carbon steel material, and his progress is slow, he works slowly, and he makes a bird gun a month.

Many craftsmen are even worse than him. They drill the bore halfway, turn it over and then drill the other half.

I heard that there is a drill bit style that has been drilling all the time and is not worried about the drilling deviation, so I naturally look at it with my eyes wide open.

At this time, he stared at the shape of the drill bit drawn by Xianggong Yang and murmured: "Will this not be wrong?"

Yang He held the pencil and smiled: "Yes, using this single-sided drill bit can solve the problem of drilling deviation of the gun tube!"

Seeing Zhang Chuxun and Li Tiannan showing very excited expressions on their faces, he smiled. These two young people can be trained well.

After all, they are young and have strong plasticity, and their skills are also very good.

To solve the problem of drilling deviation of gun barrels, it is indeed very simple. Changing the diamond structure to a single-sided drill bit structure is just a simple physical principle.

Of course, no matter how simple the principle is, if the window paper is not clear, it may take hundreds or thousands of years, and no one will think of it.

In fact, by the end of the Qing Dynasty, many craftsmen still used diamond drills. The Indians had sculptures and toys for wheels for thousands of years, but they could not have thought of inventing wheels for carts.

After discussing the single-sided drill bit structure for a long time, Yang He ordered Zhang Chuxun to use ordinary fallen steel to make such a drill bit first. After trial, if feasible, then use Su steel to make it. In the future, the drill bits will be of this standard single-sided structure.

Zhang Chuxun agreed excitedly, and he couldn't wait to try it.

Zhang Chugong watched from the side, and was also excited. His husband taught these top secret skills, and he had to do his best to do things.

Yang He decided to make six pairs of single-sided drill bits first, temporarily using one on Zhang Chuxun and Li Tiannan, and several pairs of them were spared and replaced.

Drilling a chamber is a technical job, but ordinary blacksmiths don't work, but they can make gun barrels and other spare parts.

If the gun barrel is directly made with more iron, it will only take a day to make a gun. Yu Blacksmith and others can also participate in the making.

It is not difficult to directly wrap the barrel of a furnished iron plate. The technical content is not that high. It is more difficult to make many iron tools than gun barrels. After all, Yu Blacksmith and others are old blacksmiths with decades of skills. Even if they have never made gun barrels, Zhang Chuxun and others will take them for a while and get familiar with them.

Such blacksmiths made gun barrels and parts according to standards, polished copper bolts, and drilled the bores of Zhang Chuxun and Li Tiannan. It was very easy to drive 100 Xin'an guns a month.

Yang He also designed a lathe to integrate various tools, making it more convenient to polish and drill the drill.

According to Yang He's estimate, he can drill a hole in half a day.

In this way, Zhang Chuxun and Li Tiannan can drill four gun barrels in a day.

...

"This is?"

Everyone looked at the instrument patterns that Xianggong Yang drew on another wooden board.

Look at the equipment diagram above, it is quite similar to a bed-type structure, and then there is a bed frame, a drill bit, a mobile station, a fixed groove, and various types of accessories processing tables.

Everyone stared at it. Zhang Chugong and Zhang Chuxun paid special attention to the drill bit above, but they changed it to a shaking handle, which was quite different from the drill bit they used to use in the past, and the drill bit above seemed to be fixed.

After all, Yang He has a very deep sketching skills, and the patterned parts are drawn very accurately and in place, so you can see this situation at a glance.

Look at the opposite side of the drill bit, there is a fixed groove with a pattern like a gun tube on it, and there is a schematic dotted head on the edge of the pattern, which means that when drilling the tube, the gun tube moves toward this side, not the drill bit.

this……

Not only Zhang Duxun, but Li Tiannan was shocked and thoughtful. They keenly realized the sharpness of this drilling machine.

Especially the gun barrel is fixed and clamped, and the whole thing is moved over. When drilling the tube, it will be unimaginably stable.

It's really...

Both young people were amazed. How did Xianggong Yang think of it?

There are so many craftsmen in the Ming Dynasty, but no one expected this.

At least Li Tiannan lives in Foshan, which is known as the "Iron Town" there, with many craftsmen and many masters. However, they are just good at craftsmanship and have never heard of such sharp equipment.

Look at this equipment, there are various processing fixing tables, grinding and cutting of gun barrels and spare parts, etc., which can be done on this lathe.

It's so wonderful, everyone is amazed.

Li Blacksmith looked at the pattern and was also fascinated by the craftsmen. For their craftsmen, this equipment picture was so beautiful that he could not have been depicted from a scholar.

He even showed a look of awe on his face, thinking: "Is Mr. Yang the reincarnation of the craftsman god?"

He didn't understand how Xianggong Yang, as a scholar, knew about these craftsmanship?

He has been in Pizhou City for many years and also knows what kind of virtue is the clerk-in-chief ambassadors in the military bureau.

Blacksmith Yu also walked closer and looked carefully. He was fascinated by the sight. He never thought that he could still see such a peerless weapon when he was old.

This Xin'anzhuang is really right.

If I stay there for a long time, I will have a few masters from my Yu family in the future.

Yang He looked at everyone's expressions and smiled slightly. This is the convergence of simple drilling machines, milling machines, boring machines and planing machines that he combined with this era.

The overall spare parts of these lathes are not complicated and the technical content is even less high. These craftsmen can make it.

If you can make a few simple lathes, at least Zhang Chuxun and Li Tiannan will have no problem drilling four gun barrels a day.

Other craftsmen can also cut and polish the lathe side.

He looked at the pattern on the wooden board, and the machine was still very simple now.

But although simple, it represents power.

The rough conversion of the power in front of him is equivalent to the power of only a few blacksmiths in Xin'anzhuang, which is more than the power of more than a hundred blacksmiths in other large workshops.

Moreover, the products produced here will be faster and better.

It can only be imitated, not surpassed.

In fact, many revolutionary machinery starts simple, but it quickly rejuvenates incredible vitality.

...

In fact, there is a part that is essential for lathe making and muskets, which is necessary to connect, tighten and need it everywhere.

This little thing is called "standard parts" in the industrial science, which is the very commonly used screws and bolts.

At this time, the processing of this thing is not simple. It is often cut out slowly, clamped a round rod and cut it slowly, and each time you need to carefully adjust the knife to avoid cutting it wrongly and finally cutting a small bolt.

Not only is the processing efficiency low, but the manufacturing cost is also very uneconomical. The materials are wasteful and the requirements for workers are high, so the masters are often needed.

So Yang He planned to use a mold-type thing to batch-made bolts and a tool to process internal threads.

The construction of these two things is simple and simple, and difficult.

It is not technology, and the technology of this era cannot be underestimated. Many handicrafts made by craftsmen have amazed later generations and felt that imitation is not easy.

But the material, like the hammer spring of a flintlock rifle, requires good steel to catch fire.

These two things have very high requirements for materials. After all, they are molds, and using high-carbon steel is inevitable.

Fortunately, Yanghe has 200 kilograms of Sugang, and the material problem is basically solved.

As everyone was looking forward to it, he slowly drew the patterns of the two things on another wooden board.

With these two things, you can batch-made standard parts such as bolts.
Chapter completed!