In a newly built factory in Xincheng, the smell of paint has not yet dissipated.
Yang Fan was surrounded by a group of senior technicians, examining a machine.
The year is 1628, and this equipment is the first boring machine in the world.
In the original history, Leonardo da Vinci designed the first boring machine, which used pedal power. Yao Guang taught it in class. But it was the British who actually made it in the 18th century.
Her students were very interested. This thing was not unusual at all. The knife sharpeners all had a pedal grinding wheel for sharpening knives. In the field survival class, the soldiers also taught how to use a bow string to drill wood to make fire.
Doesn't this thing just fix the cutter, and then the pedal drives the belt to rotate the cutter, then fix the iron material that needs the bore on the slide rail, send it forward, and cut it bit by bit.
As long as the knife is hard enough, there's nothing mysterious about these things.
There are a total of fifteen students in the mechanical class. They are all primary school students who have graduated from school for half a year. They have only studied simple arithmetic and plane geometry. There is no way, there is not much time to study, and there is a shortage of students everywhere.
There was a pair of siblings in the class, the elder sister was named Cui Xiaohua, and the younger brother was named Cui Xiaoshi. After listening to Teacher Yaoguang's class, they went home and tinkered with a simple boring machine.
This surprised Yang Fan, so he hurried over to take a look.
This thing looks very simple. It is modified from a bench grinding wheel used for sharpening kitchen knives. A wrought iron pipe is fixed by a clamp and can be manually moved forward and backward on the slide rail. The slide rail is made of brass with an I-shaped cross-section. This
It was made by their father in the factory, and the workmanship is very good and smooth.
"The reason why we use copper for this slide rail is mainly because copper has self-lubricating properties, and the front and back movement is smoother. It also does not rust." Sister Cui Xiaohua introduced.
The teachers and masters around them couldn't help but nod. These kids from the school are really amazing, and even the apprentices with average knowledge don't know this.
"This drill bit was used by my grandfather, and we picked it up from the factory garbage dump," said his younger brother Cui Xiaoshi.
"As for the power, we used the bicycle at home. We borrowed it after some hard work, and my mother felt very distressed." Cui Xiaohua said with a frown.
Bicycles are a rare thing, and Yang Fan here is equipped with them on transport ships. Only very outstanding workers will be rewarded at the biannual conference. Their grandfather Cui Datou was the best master in drilling gun barrels in the arsenal, so he was
One was awarded.
In the past six months, Cui Datou brought out seven apprentices with qualified skills and made great contributions. Only then was he rewarded with a bicycle.
The old man is seventy years old this year. Although he is not as strong as young people, his skills are really good. The drilled barrel is smooth and straight.
Not everyone can do this job well, because the inside of the gun barrel cannot be seen by the human eye. It all depends on feeling. As long as it is a little crooked, the gun barrel will be scrapped. If the scrap rate is too high, the monthly bonus of the entire workshop will be reduced.
Gone.
Cui Datou was also among the old experts observing. Seeing that his granddaughter and grandson were so promising, his face flushed with joy and his mouth never closed.
Yang Fan asked: "Why did you two think of making this thing?"
Cui Xiaohua said: "Grandpa is getting old, and he refuses to retire, because for bringing out an apprentice, the factory will give him ten taels of silver. I also have the youngest uncle, who has not found a wife, and grandpa plans to work for a few more years.
, I am marrying my brother-in-law. Grandpa is so lucky."
"Yes, it takes a month to drill a gun barrel, even for a master like grandpa, it takes half a month. It's too hard." Cui Xiaoshi also said.
"Well, they are really two filial children." Everyone praised them.
A strong soldier rode on a bicycle fixed to the ground and quickly drove the chain. The drill rod drove the drill bit to rotate rapidly.
Cui Xiaoshi carefully pushed the slide rail to advance the knife.
This wrought iron barrel has been forged many times, and the internal bubbles and cracks have been completely eliminated, so there is no problem with its strength.
Wrought iron is relatively soft, but the steel drill bit is much harder than wrought iron. Seeing the iron rod coming into contact with the rapidly rotating drill bit, it made a sizzling noise, and the silver-white iron filings were brought out by the drill bit.
The master craftsmen around him exclaimed. This was too easy. He usually used a hammer to smash out the inner chamber of the gun barrel. When using a hammer to hit the drill bit, you must be very careful and tilt it a little.
The tube is useless.
If too many pieces are scrapped, they will be scolded by the blacksmiths.
These wrought iron rods are all hammered by the blacksmith, which is time-consuming and labor-intensive. You can't make too many in one day. Every time one is scrapped, half the day's work is wasted. The finished product is a bonus for everyone involved in the entire process. If the last step of drilling is
Something went wrong. People on one line will not get the finished product bonus.
The drilling master was under too much pressure.
At this time, the speed drill bit visible to the naked eye penetrated deeply into the wrought iron rod. Cui Xiaoshi carefully pushed the slide rail forward, controlling the speed and feeling the contact force between the drill bit and the wrought iron.
They only have this drill bit. If it is scrapped, there will be no place to find another one.
Everyone held their breath, and the workshop was quiet except for the rustle of iron filings brought out by the drill.
Half an hour passed and a perfect barrel was ready.
Cui Xiaoshi was already sweating profusely. He carefully took the barrel off the clamp, took a closer look, and let out a long breath.
The bore of the gun is perfect and the polish is beautiful. Like a mirror, there is no problem visible to the naked eye.
Surrounded by first-class masters who make gun barrels, they are experts.
They could tell at a glance that the barrel made by this boring machine was of an excellent grade. The barrel that usually took skilled workers half a month to make was actually drilled in half an hour.
They all took out Yang Fanfa's vernier calipers and various tools and began to measure.
"No problem, this is a high-quality product"
"It's great. It's great that such a high-quality barrel can be processed at such a fast speed."
"When we make firecrackers, the most time-consuming and labor-intensive part is the barrel. All the processes are waiting for the barrel. Now it's better. The assembly line operation that the master mentioned can be realized."
This chapter is not finished yet, please click on the next page to continue reading the exciting content! Yang Fan was also very surprised when he looked at the world's first gun barrel processed by a boring machine. He did not expect that it was made by a few students.
.It shows how powerful the creativity of young people is.
"Let's take a look, what do you think, and do you have any suggestions for improvement?" Yang Fan asked.
"Let me say a few words. I think the temperature of the drill bit was too high when drilling. I should lower the temperature of the drill bit. Drill for a while, then pull out and spray water. This will not damage the drill bit. I smelled burning just now.
It smells bad, the drill bit must be very hot at that time, if you touch it with your hands, you will probably burn your hands." said a senior craftsman.
Yang Fan nodded and said to himself, having more experience is different. Aren't all machine tools in later generations equipped with liquid cooling equipment?
"I would also like to say a few words. It is not easy to control the speed when using a bicycle. I think it is best to adjust the speed. It should be fast when it needs to be fast and slow when it needs to be slow. Nowadays, soldiers ride at different speeds, resulting in different speeds of drill bits.
Likewise, this makes the feed on the slide rail very difficult and difficult to cooperate with."
Yang Fan said: "This is a good question. This requires the design of a transmission gear to transmit the power stably. It is best to adjust the required speed through the transmission gear. I will give you a plan later. You can go to Yao
Teacher Guang will guide you."
"Master, I also want to make a suggestion." Xiao Niangpi also came over and said.
She is now very interested in Yang Fan's career. With her intelligence, she has already seen that the master needs a woman who can help him.
She actively participated in everything within Yang Fan's system to please Yang Fan.
Yang Fan was very happy to see Tu Shanyue participating and nodded.
"I think manpower is still too limited. It would be better to design a hydraulically powered boring machine. Put it in the same workshop as the hydraulic forging hammer, build the barrel there, and drill holes here. This way the efficiency will go up.
"She said, looking at Yang Fan's expression here, she saw that Yang Fan was listening carefully and was a little excited.
Tu Shanyue continued: "Now that three-pound guns have begun to be equipped at the squadron level, there will be great demand in the future. If a large boring machine can be designed, can it be used to chamber the guns?"
Yang Fan was very satisfied, nodded approvingly and said: "That's very well said. This is a very good suggestion. In fact, boring machines can not only be used to chamber cannons, but also have more important uses."
"What is it used for?" Xiao Niangpi couldn't help but ask.
"A cylinder used to bore a steam engine."
"Steam engine, what is this?"
"Have you ever boiled water? When the water boils, the steam will lift the lid of the pot." Yang Fan asked.
Tu Shanyue nodded, she naturally knew this, even though the water was boiled by Mei Xiang for her. But even though Miss Tu Shan never touched Yangchun water and never killed a pig, she still saw pigs running away.
"A water tank is sealed on top of the honeycomb briquette stove, and it becomes a boiler. Then water is boiled, and the steam is discharged from a pipe. This is called a cylinder, and a piston is installed inside, which can push the piston back and forth to move back and forth as power.
"Yang Fan casually drew a sketch on the paper.
This principle is very simple and everyone can understand it at a glance.
"But this is a back-and-forth reciprocating motion. What the boring machine needs is circular motion." Miss Tushan did not learn physics knowledge by herself during this period, and she is not easy to master.
"This is simple, just make a crankshaft," Yang Fan said, drawing a crankshaft casually, and then used his elbow to imitate the movement of the crankshaft of a steam train to drive the wheels, and made a sound of moving and hitting in his mouth.
Everyone suddenly became enlightened and felt enlightened. At this moment, their thoughts suddenly became clear. They all praised the master for being smart.
Yang Fan was a little embarrassed to be said. These are common sense of later generations. It seems as if he invented them himself.
"The inventions of the two children are very important, although they are still very crude. But we must protect inventions and creations. I believe that a patent system should be established. Anyone can apply for it. The patent is valid for ten years. During the period, anyone can use the inventor's invention." For patented technology, you have to pay a certain fee. After ten years, the patent will expire and everyone can use it casually," Yang Fan said.
"Sir, this system is really good. There must be many people willing to come up with the invention that I mentioned."
"Sir, this is equivalent to increasing the workers' income, and they will also have the motivation to innovate technology."
Cui Xiaohua and Cui Xiaoshi were dumbfounded. They were still students, how could they make money for their family now?
This chapter has been completed!