In a newly built factory in Xincheng, the smell of paint has not yet dissipated. Yang Fan was examining this machine surrounded by a group of senior technicians.
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, which Yao Guang taught in class.
Her students were very interested. This thing was not unusual at all. The knife sharpeners all had a pedal grinding wheel for sharpening their knives.
In the field survival class, the soldiers also taught how to use a bow string to drill wood to make fire. Isn't this thing of Juquge just fixing the cutter, and then the pedal drives the belt to rotate the cutter, then fix the iron material that needs the bore on the bearing, and send it forward, cutting bit by bit.
As long as the knife is hard enough, there's nothing mysterious about these things. There are fifteen students in the mechanical class. They are all primary school students who have graduated from school for half a year.
I have only learned simple arithmetic and plane geometry, but I have no choice but not much time to study. There is a shortage of people everywhere.
There is a pair of siblings in the class, the elder sister is named Cui Xiaohua, and the younger brother is 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 was made by their father in the factory. The workmanship is very good and smooth.
"The reason why we use copper for this slide rail is mainly because copper is self-lubricating and can move forward and backward smoothly. 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 so awesome, and these ordinary apprentices don't know it.
"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 semi-annual conference.
Their grandfather Cui Datou was the best master in drilling gun barrels in the arsenal, so he was rewarded with one. Cui Datou brought out seven qualified apprentices in the past six months and made great contributions, so he was 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 barrel is invisible to the human eye and depends entirely on feeling. If it is a little crooked, the barrel and the barrel will be considered scrapped.
If the scrap rate is too high, the entire workshop’s monthly bonus will be lost. Cui Datou was also among the old experts observing. Seeing that his granddaughter and grandson were so promising, his face flushed with joy.
Yang Fan asked: "Have you two thought about making this thing?" Cui Xiaohua said:
"Grandpa is getting old, and he refuses to retire. Because he brings out an apprentice, the factory will give him ten taels of silver. I also have the youngest uncle, who has not found a wife. Grandpa plans to work for a few more years and give his uncle I'm getting a wife. 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 bubbles and cracks inside it have been completely eliminated, and 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 contact with the rapidly rotating drill bit, it makes a piercing noise, and the silver-white iron filings are 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 with one hammer.
You must be very careful when hitting the drill bit with a hammer. If it is tilted a little, the barrel will be useless. If too many are scrapped, the blacksmiths will scold them to death.
These wrought iron rods are all hammered by the blacksmith, which is time-consuming and labor-intensive. You can't make too many in a 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 something goes wrong in the last step of drilling. People on one line will not get bonuses for finished products.
The drill master was under too much pressure. At this time, the visible speed drill bit 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.
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, looked at it carefully, and let out a long breath.
The bore is perfect and the finish is beautiful. Like a mirror, nothing is 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 takes 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 started measuring.
"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 fireguns, 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 said can be realized." Yang Fan looked at the world's largest gun I was also very surprised by the gun barrel processed by the boring machine. I didn't expect that it was actually made by a few students.
It shows how powerful the creativity of young people is.
"Let's take a look. What do you think? 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 just now, so I should lower the temperature of the drill bit. After drilling for a while, pull out and spray water. This will not damage the drill bit. I smelled burning just now. The drill bit must be very hot at that time, and if you touch it with your hands, you will probably burn your hands." said a senior chef.
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 variable speed 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 Teacher Yaoguang to 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.
nodded.
"I think manpower is still too limited. It would be better to design a hydraulic 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 here and saw that Yang Fan was listening carefully, then continued.
"Now the three-pounder cannon has begun to be equipped at the squadron level. There will be great demand in the future. If it can shoot a large boring machine, can it be used to chamber the gun?" Yang Fan was very satisfied, nodded approvingly and said: "That's very good. 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's the purpose?" 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 Mei Xiang had boiled the water for her.
But although Miss Tushan has never touched Yang Chun Shui and has never killed a pig, she has still seen pigs running away. "
"Seal a water tank on the honeycomb coal road, then boil water, and the water will be discharged neatly from a pipe. Install a piston inside, and you can push the piston back and forth to move back and forth. As a 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 reciprocating motion. What the boring machine needs is circular motion." Miss Tushan did not learn physics knowledge by herself during this period, and she was not easy to fool.
"This is simple, just make a crankshaft," Yang Fan said, casually drawing a crankshaft, and then used his elbow to imitate the crankshaft of a steam train to drive the wheels, making a clicking sound from his mouth.
Everyone suddenly became enlightened and felt like they were 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 for future generations. It's as if you invented it yourself.
"The inventions of the two children are very important. Although they are still very crude, we must protect inventions and creations. I believe that a patent system will be established, which will be valid for ten years. Anyone who wants to use the inventor's patented technology must pay a certain fee. After ten years, the patent expires 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."
"Master, this will increase 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 families now?
